https://github.com/Microsoft/TypeScript
Tip revision: 90e6f4984a52c6e403d2b799492ea81fd5d9dd71 authored by Mohamed Hegazy on 12 February 2018, 21:40:57 UTC
Update LKG
Update LKG
Tip revision: 90e6f49
fourslash.ts
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
/// <reference path="..\services\services.ts" />
/// <reference path="..\services\shims.ts" />
/// <reference path="harnessLanguageService.ts" />
/// <reference path="harness.ts" />
/// <reference path="fourslashRunner.ts" />
namespace FourSlash {
ts.disableIncrementalParsing = false;
// Represents a parsed source file with metadata
export interface FourSlashFile {
// The contents of the file (with markers, etc stripped out)
content: string;
fileName: string;
symlinks?: string[];
version: number;
// File-specific options (name/value pairs)
fileOptions: Harness.TestCaseParser.CompilerSettings;
}
// Represents a set of parsed source files and options
export interface FourSlashData {
// Global options (name/value pairs)
globalOptions: Harness.TestCaseParser.CompilerSettings;
files: FourSlashFile[];
// A mapping from marker names to name/position pairs
markerPositions: ts.Map<Marker>;
markers: Marker[];
/**
* Inserted in source files by surrounding desired text
* in a range with `[|` and `|]`. For example,
*
* [|text in range|]
*
* is a range with `text in range` "selected".
*/
ranges: Range[];
}
export interface Marker {
fileName: string;
position: number;
data?: any;
}
export interface Range {
fileName: string;
start: number;
end: number;
marker?: Marker;
}
interface LocationInformation {
position: number;
sourcePosition: number;
sourceLine: number;
sourceColumn: number;
}
interface RangeLocationInformation extends LocationInformation {
marker?: Marker;
}
interface ImplementationLocationInformation extends ts.ImplementationLocation {
matched?: boolean;
}
export interface TextSpan {
start: number;
end: number;
}
export import IndentStyle = ts.IndentStyle;
const entityMap = ts.createMapFromTemplate({
"&": "&",
"\"": """,
"'": "'",
"/": "/",
"<": "<",
">": ">"
});
export function escapeXmlAttributeValue(s: string) {
return s.replace(/[&<>"'\/]/g, ch => entityMap.get(ch));
}
// Name of testcase metadata including ts.CompilerOptions properties that will be used by globalOptions
// To add additional option, add property into the testOptMetadataNames, refer the property in either globalMetadataNames or fileMetadataNames
// Add cases into convertGlobalOptionsToCompilationsSettings function for the compiler to acknowledge such option from meta data
const enum MetadataOptionNames {
baselineFile = "BaselineFile",
emitThisFile = "emitThisFile", // This flag is used for testing getEmitOutput feature. It allows test-cases to indicate what file to be output in multiple files project
fileName = "Filename",
resolveReference = "ResolveReference", // This flag is used to specify entry file for resolve file references. The flag is only allow once per test file
symlink = "Symlink",
}
// List of allowed metadata names
const fileMetadataNames = [MetadataOptionNames.fileName, MetadataOptionNames.emitThisFile, MetadataOptionNames.resolveReference, MetadataOptionNames.symlink];
function convertGlobalOptionsToCompilerOptions(globalOptions: Harness.TestCaseParser.CompilerSettings): ts.CompilerOptions {
const settings: ts.CompilerOptions = { target: ts.ScriptTarget.ES5 };
Harness.Compiler.setCompilerOptionsFromHarnessSetting(globalOptions, settings);
return settings;
}
export class TestCancellationToken implements ts.HostCancellationToken {
// 0 - cancelled
// >0 - not cancelled
// <0 - not cancelled and value denotes number of isCancellationRequested after which token become cancelled
private static readonly notCanceled = -1;
private numberOfCallsBeforeCancellation = TestCancellationToken.notCanceled;
public isCancellationRequested(): boolean {
if (this.numberOfCallsBeforeCancellation < 0) {
return false;
}
if (this.numberOfCallsBeforeCancellation > 0) {
this.numberOfCallsBeforeCancellation--;
return false;
}
return true;
}
public setCancelled(numberOfCalls = 0): void {
ts.Debug.assert(numberOfCalls >= 0);
this.numberOfCallsBeforeCancellation = numberOfCalls;
}
public resetCancelled(): void {
this.numberOfCallsBeforeCancellation = TestCancellationToken.notCanceled;
}
}
export function verifyOperationIsCancelled(f: () => void) {
try {
f();
}
catch (e) {
if (e instanceof ts.OperationCanceledException) {
return;
}
}
throw new Error("Operation should be cancelled");
}
// This function creates IScriptSnapshot object for testing getPreProcessedFileInfo
// Return object may lack some functionalities for other purposes.
function createScriptSnapShot(sourceText: string): ts.IScriptSnapshot {
return ts.ScriptSnapshot.fromString(sourceText);
}
export class TestState {
// Language service instance
private languageServiceAdapterHost: Harness.LanguageService.LanguageServiceAdapterHost;
private languageService: ts.LanguageService;
private cancellationToken: TestCancellationToken;
// The current caret position in the active file
public currentCaretPosition = 0;
// The position of the end of the current selection, or -1 if nothing is selected
public selectionEnd = -1;
public lastKnownMarker = "";
// The file that's currently 'opened'
public activeFile: FourSlashFile;
// Whether or not we should format on keystrokes
public enableFormatting = true;
public formatCodeSettings: ts.FormatCodeSettings;
private inputFiles = ts.createMap<string>(); // Map between inputFile's fileName and its content for easily looking up when resolving references
private static getDisplayPartsJson(displayParts: ts.SymbolDisplayPart[]) {
let result = "";
ts.forEach(displayParts, part => {
if (result) {
result += ",\n ";
}
else {
result = "[\n ";
}
result += JSON.stringify(part);
});
if (result) {
result += "\n]";
}
return result;
}
// Add input file which has matched file name with the given reference-file path.
// This is necessary when resolveReference flag is specified
private addMatchedInputFile(referenceFilePath: string, extensions: ReadonlyArray<string>) {
const inputFiles = this.inputFiles;
const languageServiceAdapterHost = this.languageServiceAdapterHost;
const didAdd = tryAdd(referenceFilePath);
if (extensions && !didAdd) {
ts.forEach(extensions, ext => tryAdd(referenceFilePath + ext));
}
function tryAdd(path: string) {
const inputFile = inputFiles.get(path);
if (inputFile && !Harness.isDefaultLibraryFile(path)) {
languageServiceAdapterHost.addScript(path, inputFile, /*isRootFile*/ true);
return true;
}
}
}
private getLanguageServiceAdapter(testType: FourSlashTestType, cancellationToken: TestCancellationToken, compilationOptions: ts.CompilerOptions): Harness.LanguageService.LanguageServiceAdapter {
switch (testType) {
case FourSlashTestType.Native:
return new Harness.LanguageService.NativeLanguageServiceAdapter(cancellationToken, compilationOptions);
case FourSlashTestType.Shims:
return new Harness.LanguageService.ShimLanguageServiceAdapter(/*preprocessToResolve*/ false, cancellationToken, compilationOptions);
case FourSlashTestType.ShimsWithPreprocess:
return new Harness.LanguageService.ShimLanguageServiceAdapter(/*preprocessToResolve*/ true, cancellationToken, compilationOptions);
case FourSlashTestType.Server:
return new Harness.LanguageService.ServerLanguageServiceAdapter(cancellationToken, compilationOptions);
default:
throw new Error("Unknown FourSlash test type: ");
}
}
constructor(private basePath: string, private testType: FourSlashTestType, public testData: FourSlashData) {
// Create a new Services Adapter
this.cancellationToken = new TestCancellationToken();
let compilationOptions = convertGlobalOptionsToCompilerOptions(this.testData.globalOptions);
compilationOptions.skipDefaultLibCheck = true;
// Initialize the language service with all the scripts
let startResolveFileRef: FourSlashFile;
let configFileName: string;
for (const file of testData.files) {
// Create map between fileName and its content for easily looking up when resolveReference flag is specified
this.inputFiles.set(file.fileName, file.content);
if (isConfig(file)) {
const configJson = ts.parseConfigFileTextToJson(file.fileName, file.content);
if (configJson.config === undefined) {
throw new Error(`Failed to parse test ${file.fileName}: ${configJson.error.messageText}`);
}
// Extend our existing compiler options so that we can also support tsconfig only options
if (configJson.config.compilerOptions) {
const baseDirectory = ts.normalizePath(ts.getDirectoryPath(file.fileName));
const tsConfig = ts.convertCompilerOptionsFromJson(configJson.config.compilerOptions, baseDirectory, file.fileName);
if (!tsConfig.errors || !tsConfig.errors.length) {
compilationOptions = ts.extend(compilationOptions, tsConfig.options);
}
}
configFileName = file.fileName;
}
if (!startResolveFileRef && file.fileOptions[MetadataOptionNames.resolveReference] === "true") {
startResolveFileRef = file;
}
else if (startResolveFileRef) {
// If entry point for resolving file references is already specified, report duplication error
throw new Error("There exists a Fourslash file which has resolveReference flag specified; remove duplicated resolveReference flag");
}
}
if (configFileName) {
const baseDir = ts.normalizePath(ts.getDirectoryPath(configFileName));
const host = new Utils.MockParseConfigHost(baseDir, /*ignoreCase*/ false, this.inputFiles);
const configJsonObj = ts.parseConfigFileTextToJson(configFileName, this.inputFiles.get(configFileName));
assert.isTrue(configJsonObj.config !== undefined);
compilationOptions = ts.parseJsonConfigFileContent(configJsonObj.config, host, baseDir, compilationOptions, configFileName).options;
}
if (compilationOptions.typeRoots) {
compilationOptions.typeRoots = compilationOptions.typeRoots.map(p => ts.getNormalizedAbsolutePath(p, this.basePath));
}
const languageServiceAdapter = this.getLanguageServiceAdapter(testType, this.cancellationToken, compilationOptions);
this.languageServiceAdapterHost = languageServiceAdapter.getHost();
this.languageService = memoWrap(languageServiceAdapter.getLanguageService(), this); // Wrap the LS to cache some expensive operations certain tests call repeatedly
if (startResolveFileRef) {
// Add the entry-point file itself into the languageServiceShimHost
this.languageServiceAdapterHost.addScript(startResolveFileRef.fileName, startResolveFileRef.content, /*isRootFile*/ true);
const resolvedResult = languageServiceAdapter.getPreProcessedFileInfo(startResolveFileRef.fileName, startResolveFileRef.content);
const referencedFiles: ts.FileReference[] = resolvedResult.referencedFiles;
const importedFiles: ts.FileReference[] = resolvedResult.importedFiles;
// Add triple reference files into language-service host
ts.forEach(referencedFiles, referenceFile => {
// Fourslash insert tests/cases/fourslash into inputFile.unitName so we will properly append the same base directory to refFile path
const referenceFilePath = this.basePath + "/" + referenceFile.fileName;
this.addMatchedInputFile(referenceFilePath, /* extensions */ undefined);
});
// Add import files into language-service host
ts.forEach(importedFiles, importedFile => {
// Fourslash insert tests/cases/fourslash into inputFile.unitName and import statement doesn't require ".ts"
// so convert them before making appropriate comparison
const importedFilePath = this.basePath + "/" + importedFile.fileName;
this.addMatchedInputFile(importedFilePath, ts.getSupportedExtensions(compilationOptions));
});
// Check if no-default-lib flag is false and if so add default library
if (!resolvedResult.isLibFile) {
this.languageServiceAdapterHost.addScript(Harness.Compiler.defaultLibFileName,
Harness.Compiler.getDefaultLibrarySourceFile().text, /*isRootFile*/ false);
}
}
else {
// resolveReference file-option is not specified then do not resolve any files and include all inputFiles
this.inputFiles.forEach((file, fileName) => {
if (!Harness.isDefaultLibraryFile(fileName)) {
this.languageServiceAdapterHost.addScript(fileName, file, /*isRootFile*/ true);
}
});
this.languageServiceAdapterHost.addScript(Harness.Compiler.defaultLibFileName,
Harness.Compiler.getDefaultLibrarySourceFile().text, /*isRootFile*/ false);
}
for (const file of testData.files) {
ts.forEach(file.symlinks, link => this.languageServiceAdapterHost.addSymlink(link, file.fileName));
}
this.formatCodeSettings = {
baseIndentSize: 0,
indentSize: 4,
tabSize: 4,
newLineCharacter: "\n",
convertTabsToSpaces: true,
indentStyle: ts.IndentStyle.Smart,
insertSpaceAfterCommaDelimiter: true,
insertSpaceAfterSemicolonInForStatements: true,
insertSpaceBeforeAndAfterBinaryOperators: true,
insertSpaceAfterConstructor: false,
insertSpaceAfterKeywordsInControlFlowStatements: true,
insertSpaceAfterFunctionKeywordForAnonymousFunctions: false,
insertSpaceAfterOpeningAndBeforeClosingNonemptyParenthesis: false,
insertSpaceAfterOpeningAndBeforeClosingNonemptyBrackets: false,
insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces: true,
insertSpaceAfterOpeningAndBeforeClosingTemplateStringBraces: false,
insertSpaceAfterOpeningAndBeforeClosingJsxExpressionBraces: false,
insertSpaceAfterTypeAssertion: false,
placeOpenBraceOnNewLineForFunctions: false,
placeOpenBraceOnNewLineForControlBlocks: false,
insertSpaceBeforeTypeAnnotation: false
};
// Open the first file by default
this.openFile(0);
function memoWrap(ls: ts.LanguageService, target: TestState): ts.LanguageService {
const cacheableMembers: (keyof typeof ls)[] = [
"getCompletionsAtPosition",
"getCompletionEntryDetails",
"getCompletionEntrySymbol",
"getQuickInfoAtPosition",
"getSignatureHelpItems",
"getReferencesAtPosition",
"getDocumentHighlights",
];
const proxy = {} as ts.LanguageService;
for (const k in ls) {
const key = k as keyof typeof ls;
if (cacheableMembers.indexOf(key) === -1) {
proxy[key] = (...args: any[]) => (ls[key] as Function)(...args);
continue;
}
const memo = Utils.memoize(
(_version: number, _active: string, _caret: number, _selectEnd: number, _marker: string, ...args: any[]) => (ls[key] as Function)(...args),
(...args) => args.join("|,|")
);
proxy[key] = (...args: any[]) => memo(
target.languageServiceAdapterHost.getScriptInfo(target.activeFile.fileName).version,
target.activeFile.fileName,
target.currentCaretPosition,
target.selectionEnd,
target.lastKnownMarker,
...args
);
}
return proxy;
}
}
private getFileContent(fileName: string): string {
const script = this.languageServiceAdapterHost.getScriptInfo(fileName);
return script.content;
}
// Entry points from fourslash.ts
public goToMarker(name: string | Marker = "") {
const marker = ts.isString(name) ? this.getMarkerByName(name) : name;
if (this.activeFile.fileName !== marker.fileName) {
this.openFile(marker.fileName);
}
const content = this.getFileContent(marker.fileName);
if (marker.position === -1 || marker.position > content.length) {
throw new Error(`Marker "${name}" has been invalidated by unrecoverable edits to the file.`);
}
const mName = ts.isString(name) ? name : this.markerName(marker);
this.lastKnownMarker = mName;
this.goToPosition(marker.position);
}
public goToEachMarker(markers: ReadonlyArray<Marker>, action: (marker: FourSlash.Marker, index: number) => void) {
assert(markers.length);
for (let i = 0; i < markers.length; i++) {
this.goToMarker(markers[i]);
action(markers[i], i);
}
}
public goToEachRange(action: () => void) {
const ranges = this.getRanges();
assert(ranges.length);
for (const range of ranges) {
this.selectRange(range);
action();
}
}
private markerName(m: Marker): string {
return ts.forEachEntry(this.testData.markerPositions, (marker, name) => {
if (marker === m) {
return name;
}
})!;
}
public goToPosition(pos: number) {
this.currentCaretPosition = pos;
this.selectionEnd = -1;
}
public select(startMarker: string, endMarker: string) {
const start = this.getMarkerByName(startMarker), end = this.getMarkerByName(endMarker);
ts.Debug.assert(start.fileName === end.fileName);
if (this.activeFile.fileName !== start.fileName) {
this.openFile(start.fileName);
}
this.goToPosition(start.position);
this.selectionEnd = end.position;
}
public selectRange(range: Range): void {
this.goToRangeStart(range);
this.selectionEnd = range.end;
}
public moveCaretRight(count = 1) {
this.currentCaretPosition += count;
this.currentCaretPosition = Math.min(this.currentCaretPosition, this.getFileContent(this.activeFile.fileName).length);
this.selectionEnd = -1;
}
// Opens a file given its 0-based index or fileName
public openFile(indexOrName: number | string, content?: string, scriptKindName?: string): void {
const fileToOpen: FourSlashFile = this.findFile(indexOrName);
fileToOpen.fileName = ts.normalizeSlashes(fileToOpen.fileName);
this.activeFile = fileToOpen;
// Let the host know that this file is now open
this.languageServiceAdapterHost.openFile(fileToOpen.fileName, content, scriptKindName);
}
public verifyErrorExistsBetweenMarkers(startMarkerName: string, endMarkerName: string, shouldExist: boolean) {
const startMarker = this.getMarkerByName(startMarkerName);
const endMarker = this.getMarkerByName(endMarkerName);
const predicate = (errorMinChar: number, errorLimChar: number, startPos: number, endPos: number) =>
((errorMinChar === startPos) && (errorLimChar === endPos)) ? true : false;
const exists = this.anyErrorInRange(predicate, startMarker, endMarker);
if (exists !== shouldExist) {
this.printErrorLog(shouldExist, this.getAllDiagnostics());
throw new Error(`${shouldExist ? "Expected" : "Did not expect"} failure between markers: '${startMarkerName}', '${endMarkerName}'`);
}
}
private raiseError(message: string): never {
throw new Error(this.messageAtLastKnownMarker(message));
}
private messageAtLastKnownMarker(message: string) {
const locationDescription = this.lastKnownMarker ? this.lastKnownMarker : this.getLineColStringAtPosition(this.currentCaretPosition);
return `At ${locationDescription}: ${message}`;
}
private assertionMessageAtLastKnownMarker(msg: string) {
return "\nMarker: " + this.lastKnownMarker + "\nChecking: " + msg + "\n\n";
}
private getDiagnostics(fileName: string): ts.Diagnostic[] {
return ts.concatenate(this.languageService.getSyntacticDiagnostics(fileName),
this.languageService.getSemanticDiagnostics(fileName));
}
private getAllDiagnostics(): ts.Diagnostic[] {
return ts.flatMap(this.languageServiceAdapterHost.getFilenames(), fileName =>
ts.isAnySupportedFileExtension(fileName) ? this.getDiagnostics(fileName) : []);
}
public verifyErrorExistsAfterMarker(markerName: string, shouldExist: boolean, after: boolean) {
const marker: Marker = this.getMarkerByName(markerName);
let predicate: (errorMinChar: number, errorLimChar: number, startPos: number, endPos: number) => boolean;
if (after) {
predicate = (errorMinChar: number, errorLimChar: number, startPos: number) =>
((errorMinChar >= startPos) && (errorLimChar >= startPos)) ? true : false;
}
else {
predicate = (errorMinChar: number, errorLimChar: number, startPos: number) =>
((errorMinChar <= startPos) && (errorLimChar <= startPos)) ? true : false;
}
const exists = this.anyErrorInRange(predicate, marker);
const diagnostics = this.getAllDiagnostics();
if (exists !== shouldExist) {
this.printErrorLog(shouldExist, diagnostics);
throw new Error(`${shouldExist ? "Expected" : "Did not expect"} failure at marker '${markerName}'`);
}
}
private anyErrorInRange(predicate: (errorMinChar: number, errorLimChar: number, startPos: number, endPos: number) => boolean, startMarker: Marker, endMarker?: Marker): boolean {
return this.getDiagnostics(startMarker.fileName).some(({ start, length }) =>
predicate(start, start + length, startMarker.position, endMarker === undefined ? undefined : endMarker.position));
}
private printErrorLog(expectErrors: boolean, errors: ts.Diagnostic[]) {
if (expectErrors) {
Harness.IO.log("Expected error not found. Error list is:");
}
else {
Harness.IO.log("Unexpected error(s) found. Error list is:");
}
for (const { start, length, messageText, file } of errors) {
Harness.IO.log(" " + this.formatRange(file, start, length) +
", message: " + ts.flattenDiagnosticMessageText(messageText, Harness.IO.newLine()) + "\n");
}
}
private formatRange(file: ts.SourceFile, start: number, length: number) {
if (file) {
return `from: ${this.formatLineAndCharacterOfPosition(file, start)}, to: ${this.formatLineAndCharacterOfPosition(file, start + length)}`;
}
return "global";
}
private formatLineAndCharacterOfPosition(file: ts.SourceFile, pos: number) {
if (file) {
const { line, character } = ts.getLineAndCharacterOfPosition(file, pos);
return `${line}:${character}`;
}
return "global";
}
private formatPosition(file: ts.SourceFile, pos: number) {
if (file) {
return file.fileName + "@" + pos;
}
return "global";
}
public verifyNoErrors() {
ts.forEachKey(this.inputFiles, fileName => {
if (!ts.isAnySupportedFileExtension(fileName)) return;
const errors = this.getDiagnostics(fileName);
if (errors.length) {
this.printErrorLog(/*expectErrors*/ false, errors);
const error = errors[0];
this.raiseError(`Found an error: ${this.formatPosition(error.file, error.start)}: ${error.messageText}`);
}
});
}
public verifyNumberOfErrorsInCurrentFile(expected: number) {
const errors = this.getDiagnostics(this.activeFile.fileName);
const actual = errors.length;
if (actual !== expected) {
this.printErrorLog(/*expectErrors*/ false, errors);
const errorMsg = "Actual number of errors (" + actual + ") does not match expected number (" + expected + ")";
Harness.IO.log(errorMsg);
this.raiseError(errorMsg);
}
}
public verifyEval(expr: string, value: any) {
const emit = this.languageService.getEmitOutput(this.activeFile.fileName);
if (emit.outputFiles.length !== 1) {
throw new Error("Expected exactly one output from emit of " + this.activeFile.fileName);
}
const evaluation = new Function(`${emit.outputFiles[0].text};\r\nreturn (${expr});`)();
if (evaluation !== value) {
this.raiseError(`Expected evaluation of expression "${expr}" to equal "${value}", but got "${evaluation}"`);
}
}
public verifyGoToDefinitionIs(endMarker: string | string[]) {
this.verifyGoToXWorker(toArray(endMarker), () => this.getGoToDefinition());
}
public verifyGoToDefinition(arg0: any, endMarkerNames?: string | string[]) {
this.verifyGoToX(arg0, endMarkerNames, () => this.getGoToDefinitionAndBoundSpan());
}
private getGoToDefinition(): ts.DefinitionInfo[] {
return this.languageService.getDefinitionAtPosition(this.activeFile.fileName, this.currentCaretPosition);
}
private getGoToDefinitionAndBoundSpan(): ts.DefinitionInfoAndBoundSpan {
return this.languageService.getDefinitionAndBoundSpan(this.activeFile.fileName, this.currentCaretPosition);
}
public verifyGoToType(arg0: any, endMarkerNames?: string | string[]) {
this.verifyGoToX(arg0, endMarkerNames, () =>
this.languageService.getTypeDefinitionAtPosition(this.activeFile.fileName, this.currentCaretPosition));
}
private verifyGoToX(arg0: any, endMarkerNames: string | string[] | undefined, getDefs: () => ts.DefinitionInfo[] | ts.DefinitionInfoAndBoundSpan | undefined) {
if (endMarkerNames) {
this.verifyGoToXPlain(arg0, endMarkerNames, getDefs);
}
else if (ts.isArray(arg0)) {
const pairs = arg0 as ReadonlyArray<[string | string[], string | string[]]>;
for (const [start, end] of pairs) {
this.verifyGoToXPlain(start, end, getDefs);
}
}
else {
const obj: { [startMarkerName: string]: string | string[] } = arg0;
for (const startMarkerName in obj) {
if (ts.hasProperty(obj, startMarkerName)) {
this.verifyGoToXPlain(startMarkerName, obj[startMarkerName], getDefs);
}
}
}
}
private verifyGoToXPlain(startMarkerNames: string | string[], endMarkerNames: string | string[], getDefs: () => ts.DefinitionInfo[] | ts.DefinitionInfoAndBoundSpan | undefined) {
for (const start of toArray(startMarkerNames)) {
this.verifyGoToXSingle(start, endMarkerNames, getDefs);
}
}
public verifyGoToDefinitionForMarkers(markerNames: string[]) {
for (const markerName of markerNames) {
this.verifyGoToXSingle(`${markerName}Reference`, `${markerName}Definition`, () => this.getGoToDefinition());
}
}
private verifyGoToXSingle(startMarkerName: string, endMarkerNames: string | string[], getDefs: () => ts.DefinitionInfo[] | ts.DefinitionInfoAndBoundSpan | undefined) {
this.goToMarker(startMarkerName);
this.verifyGoToXWorker(toArray(endMarkerNames), getDefs, startMarkerName);
}
private verifyGoToXWorker(endMarkers: string[], getDefs: () => ts.DefinitionInfo[] | ts.DefinitionInfoAndBoundSpan | undefined, startMarkerName?: string) {
const defs = getDefs();
let definitions: ts.DefinitionInfo[] | ReadonlyArray<ts.DefinitionInfo>;
let testName: string;
if (!defs || Array.isArray(defs)) {
definitions = defs as ts.DefinitionInfo[] || [];
testName = "goToDefinitions";
}
else {
this.verifyDefinitionTextSpan(defs, startMarkerName);
definitions = defs.definitions;
testName = "goToDefinitionsAndBoundSpan";
}
if (endMarkers.length !== definitions.length) {
this.raiseError(`${testName} failed - expected to find ${endMarkers.length} definitions but got ${definitions.length}`);
}
ts.zipWith(endMarkers, definitions, (endMarker, definition, i) => {
const marker = this.getMarkerByName(endMarker);
if (marker.fileName !== definition.fileName || marker.position !== definition.textSpan.start) {
this.raiseError(`${testName} failed for definition ${endMarker} (${i}): expected ${marker.fileName} at ${marker.position}, got ${definition.fileName} at ${definition.textSpan.start}`);
}
});
}
private verifyDefinitionTextSpan(defs: ts.DefinitionInfoAndBoundSpan, startMarkerName: string) {
const range = this.testData.ranges.find(range => this.markerName(range.marker) === startMarkerName);
if (!range && !defs.textSpan) {
return;
}
if (!range) {
this.raiseError(`goToDefinitionsAndBoundSpan failed - found a TextSpan ${JSON.stringify(defs.textSpan)} when it wasn't expected.`);
}
else if (defs.textSpan.start !== range.start || defs.textSpan.length !== range.end - range.start) {
const expected: ts.TextSpan = {
start: range.start, length: range.end - range.start
};
this.raiseError(`goToDefinitionsAndBoundSpan failed - expected to find TextSpan ${JSON.stringify(expected)} but got ${JSON.stringify(defs.textSpan)}`);
}
}
public verifyGetEmitOutputForCurrentFile(expected: string): void {
const emit = this.languageService.getEmitOutput(this.activeFile.fileName);
if (emit.outputFiles.length !== 1) {
throw new Error("Expected exactly one output from emit of " + this.activeFile.fileName);
}
const actual = emit.outputFiles[0].text;
if (actual !== expected) {
this.raiseError(`Expected emit output to be "${expected}", but got "${actual}"`);
}
}
public verifyGetEmitOutputContentsForCurrentFile(expected: ts.OutputFile[]): void {
const emit = this.languageService.getEmitOutput(this.activeFile.fileName);
assert.equal(emit.outputFiles.length, expected.length, "Number of emit output files");
ts.zipWith(emit.outputFiles, expected, (outputFile, expected) => {
assert.equal(outputFile.name, expected.name, "FileName");
assert.equal(outputFile.text, expected.text, "Content");
});
}
public verifyCompletionListCount(expectedCount: number, negative: boolean) {
if (expectedCount === 0 && negative) {
this.verifyCompletionListIsEmpty(/*negative*/ false);
return;
}
const members = this.getCompletionListAtCaret();
if (members) {
const match = members.entries.length === expectedCount;
if ((!match && !negative) || (match && negative)) {
this.raiseError("Member list count was " + members.entries.length + ". Expected " + expectedCount);
}
}
else if (expectedCount) {
this.raiseError("Member list count was 0. Expected " + expectedCount);
}
}
public verifyCompletionListItemsCountIsGreaterThan(count: number, negative: boolean) {
const completions = this.getCompletionListAtCaret();
const itemsCount = completions ? completions.entries.length : 0;
if (negative) {
if (itemsCount > count) {
this.raiseError(`Expected completion list items count to not be greater than ${count}, but is actually ${itemsCount}`);
}
}
else {
if (itemsCount <= count) {
this.raiseError(`Expected completion list items count to be greater than ${count}, but is actually ${itemsCount}`);
}
}
}
public verifyCompletionListStartsWithItemsInOrder(items: string[]): void {
if (items.length === 0) {
return;
}
const entries = this.getCompletionListAtCaret().entries;
assert.isTrue(items.length <= entries.length, `Amount of expected items in completion list [ ${items.length} ] is greater than actual number of items in list [ ${entries.length} ]`);
ts.zipWith(entries, items, (entry, item) => {
assert.equal(entry.name, item, `Unexpected item in completion list`);
});
}
public noItemsWithSameNameButDifferentKind(): void {
const completions = this.getCompletionListAtCaret();
const uniqueItems = ts.createMap<string>();
for (const item of completions.entries) {
const uniqueItem = uniqueItems.get(item.name);
if (!uniqueItem) {
uniqueItems.set(item.name, item.kind);
}
else {
assert.equal(item.kind, uniqueItem, `Items should have the same kind, got ${item.kind} and ${uniqueItem}`);
}
}
}
public verifyCompletionListIsEmpty(negative: boolean) {
const completions = this.getCompletionListAtCaret();
if ((!completions || completions.entries.length === 0) && negative) {
this.raiseError("Completion list is empty at caret at position " + this.activeFile.fileName + " " + this.currentCaretPosition);
}
else if (completions && completions.entries.length !== 0 && !negative) {
this.raiseError(`Completion list is not empty at caret at position ${this.activeFile.fileName} ${this.currentCaretPosition}\n` +
`Completion List contains: ${stringify(completions.entries.map(e => e.name))}`);
}
}
public verifyCompletionListAllowsNewIdentifier(negative: boolean) {
const completions = this.getCompletionListAtCaret();
if ((completions && !completions.isNewIdentifierLocation) && !negative) {
this.raiseError("Expected builder completion entry");
}
else if ((completions && completions.isNewIdentifierLocation) && negative) {
this.raiseError("Un-expected builder completion entry");
}
}
public verifyCompletionListIsGlobal(expected: boolean) {
const completions = this.getCompletionListAtCaret();
if (completions && completions.isGlobalCompletion !== expected) {
this.raiseError(`verifyCompletionListIsGlobal failed - expected result to be ${completions.isGlobalCompletion}`);
}
}
public verifyCompletionsAt(markerName: string, expected: ReadonlyArray<FourSlashInterface.ExpectedCompletionEntry>, options?: FourSlashInterface.CompletionsAtOptions) {
this.goToMarker(markerName);
const actualCompletions = this.getCompletionListAtCaret(options);
if (!actualCompletions) {
this.raiseError(`No completions at position '${this.currentCaretPosition}'.`);
}
if (options && options.isNewIdentifierLocation !== undefined && actualCompletions.isNewIdentifierLocation !== options.isNewIdentifierLocation) {
this.raiseError(`Expected 'isNewIdentifierLocation' to be ${options.isNewIdentifierLocation}, got ${actualCompletions.isNewIdentifierLocation}`);
}
const actual = actualCompletions.entries;
if (actual.length !== expected.length) {
this.raiseError(`Expected ${expected.length} completions, got ${actual.map(a => a.name)}.`);
}
ts.zipWith(actual, expected, (completion, expectedCompletion, index) => {
const { name, insertText, replacementSpan } = typeof expectedCompletion === "string" ? { name: expectedCompletion, insertText: undefined, replacementSpan: undefined } : expectedCompletion;
if (completion.name !== name) {
this.raiseError(`Expected completion at index ${index} to be ${name}, got ${completion.name}`);
}
if (completion.insertText !== insertText) {
this.raiseError(`Expected completion insert text at index ${index} to be ${insertText}, got ${completion.insertText}`);
}
const convertedReplacementSpan = replacementSpan && textSpanFromRange(replacementSpan);
try {
assert.deepEqual(completion.replacementSpan, convertedReplacementSpan);
}
catch {
this.raiseError(`Expected completion replacementSpan at index ${index} to be ${stringify(convertedReplacementSpan)}, got ${stringify(completion.replacementSpan)}`);
}
});
}
public verifyCompletionListContains(entryId: ts.Completions.CompletionEntryIdentifier, text?: string, documentation?: string, kind?: string | { kind?: string, kindModifiers?: string }, spanIndex?: number, hasAction?: boolean, options?: FourSlashInterface.VerifyCompletionListContainsOptions) {
const completions = this.getCompletionListAtCaret(options);
if (completions) {
this.assertItemInCompletionList(completions.entries, entryId, text, documentation, kind, spanIndex, hasAction, options);
}
else {
this.raiseError(`No completions at position '${this.currentCaretPosition}' when looking for '${JSON.stringify(entryId)}'.`);
}
}
/**
* Verify that the completion list does NOT contain the given symbol.
* The symbol is considered matched with the symbol in the list if and only if all given parameters must matched.
* When any parameter is omitted, the parameter is ignored during comparison and assumed that the parameter with
* that property of the symbol in the list.
* @param symbol the name of symbol
* @param expectedText the text associated with the symbol
* @param expectedDocumentation the documentation text associated with the symbol
* @param expectedKind the kind of symbol (see ScriptElementKind)
* @param spanIndex the index of the range that the completion item's replacement text span should match
*/
public verifyCompletionListDoesNotContain(entryId: ts.Completions.CompletionEntryIdentifier, expectedText?: string, expectedDocumentation?: string, expectedKind?: string | { kind?: string, kindModifiers?: string }, spanIndex?: number, options?: FourSlashInterface.CompletionsAtOptions) {
let replacementSpan: ts.TextSpan;
if (spanIndex !== undefined) {
replacementSpan = this.getTextSpanForRangeAtIndex(spanIndex);
}
const completions = this.getCompletionListAtCaret(options);
if (completions) {
let filterCompletions = completions.entries.filter(e => e.name === entryId.name && e.source === entryId.source);
filterCompletions = expectedKind ? filterCompletions.filter(e => e.kind === expectedKind || (typeof expectedKind === "object" && e.kind === expectedKind.kind)) : filterCompletions;
filterCompletions = filterCompletions.filter(entry => {
const details = this.getCompletionEntryDetails(entry.name);
const documentation = details && ts.displayPartsToString(details.documentation);
const text = details && ts.displayPartsToString(details.displayParts);
// If any of the expected values are undefined, assume that users don't
// care about them.
if (replacementSpan && !TestState.textSpansEqual(replacementSpan, entry.replacementSpan)) {
return false;
}
else if (expectedText && text !== expectedText) {
return false;
}
else if (expectedDocumentation && documentation !== expectedDocumentation) {
return false;
}
return true;
});
if (filterCompletions.length !== 0) {
// After filtered using all present criterion, if there are still symbol left in the list
// then these symbols must meet the criterion for Not supposed to be in the list. So we
// raise an error
let error = `Completion list did contain '${JSON.stringify(entryId)}\'.`;
const details = this.getCompletionEntryDetails(filterCompletions[0].name);
if (expectedText) {
error += "Expected text: " + expectedText + " to equal: " + ts.displayPartsToString(details.displayParts) + ".";
}
if (expectedDocumentation) {
error += "Expected documentation: " + expectedDocumentation + " to equal: " + ts.displayPartsToString(details.documentation) + ".";
}
if (expectedKind) {
error += "Expected kind: " + expectedKind + " to equal: " + filterCompletions[0].kind + ".";
}
else {
error += "kind: " + filterCompletions[0].kind + ".";
}
if (replacementSpan) {
const spanText = filterCompletions[0].replacementSpan ? stringify(filterCompletions[0].replacementSpan) : undefined;
error += "Expected replacement span: " + stringify(replacementSpan) + " to equal: " + spanText + ".";
}
this.raiseError(error);
}
}
}
public verifyCompletionEntryDetails(entryName: string, expectedText: string, expectedDocumentation?: string, kind?: string, tags?: ts.JSDocTagInfo[]) {
const details = this.getCompletionEntryDetails(entryName);
assert(details, "no completion entry available");
assert.equal(ts.displayPartsToString(details.displayParts), expectedText, this.assertionMessageAtLastKnownMarker("completion entry details text"));
if (expectedDocumentation !== undefined) {
assert.equal(ts.displayPartsToString(details.documentation), expectedDocumentation, this.assertionMessageAtLastKnownMarker("completion entry documentation"));
}
if (kind !== undefined) {
assert.equal(details.kind, kind, this.assertionMessageAtLastKnownMarker("completion entry kind"));
}
if (tags !== undefined) {
assert.equal(details.tags.length, tags.length, this.messageAtLastKnownMarker("QuickInfo tags"));
ts.zipWith(tags, details.tags, (expectedTag, actualTag) => {
assert.equal(expectedTag.name, actualTag.name);
assert.equal(expectedTag.text, actualTag.text, this.messageAtLastKnownMarker("QuickInfo tag " + actualTag.name));
});
}
}
/** Use `getProgram` instead of accessing this directly. */
private _program: ts.Program;
/** Use `getChecker` instead of accessing this directly. */
private _checker: ts.TypeChecker;
private getProgram(): ts.Program {
return this._program || (this._program = this.languageService.getProgram());
}
private getChecker() {
return this._checker || (this._checker = this.getProgram().getTypeChecker());
}
private getSourceFile(): ts.SourceFile {
const { fileName } = this.activeFile;
const result = this.getProgram().getSourceFile(fileName);
if (!result) {
throw new Error(`Could not get source file ${fileName}`);
}
return result;
}
private getNode(): ts.Node {
return ts.getTouchingPropertyName(this.getSourceFile(), this.currentCaretPosition, /*includeJsDocComment*/ false);
}
private goToAndGetNode(range: Range): ts.Node {
this.goToRangeStart(range);
const node = this.getNode();
this.verifyRange("touching property name", range, node);
return node;
}
private verifyRange(desc: string, expected: Range, actual: ts.Node) {
const actualStart = actual.getStart();
const actualEnd = actual.getEnd();
if (actualStart !== expected.start || actualEnd !== expected.end) {
this.raiseError(`${desc} should be ${expected.start}-${expected.end}, got ${actualStart}-${actualEnd}`);
}
}
private verifySymbol(symbol: ts.Symbol, declarationRanges: Range[]) {
const { declarations } = symbol;
if (declarations.length !== declarationRanges.length) {
this.raiseError(`Expected to get ${declarationRanges.length} declarations, got ${declarations.length}`);
}
ts.zipWith(declarations, declarationRanges, (decl, range) => {
this.verifyRange("symbol declaration", range, decl);
});
}
public verifySymbolAtLocation(startRange: Range, declarationRanges: Range[]): void {
const node = this.goToAndGetNode(startRange);
const symbol = this.getChecker().getSymbolAtLocation(node);
if (!symbol) {
this.raiseError("Could not get symbol at location");
}
this.verifySymbol(symbol, declarationRanges);
}
public symbolsInScope(range: Range): ts.Symbol[] {
const node = this.goToAndGetNode(range);
return this.getChecker().getSymbolsInScope(node, ts.SymbolFlags.Value | ts.SymbolFlags.Type | ts.SymbolFlags.Namespace);
}
public setTypesRegistry(map: ts.MapLike<void>): void {
this.languageServiceAdapterHost.typesRegistry = ts.createMapFromTemplate(map);
}
public verifyTypeOfSymbolAtLocation(range: Range, symbol: ts.Symbol, expected: string): void {
const node = this.goToAndGetNode(range);
const checker = this.getChecker();
const type = checker.getTypeOfSymbolAtLocation(symbol, node);
const actual = checker.typeToString(type);
if (actual !== expected) {
this.raiseError(`Expected: '${expected}', actual: '${actual}'`);
}
}
private verifyReferencesAre(expectedReferences: Range[]) {
const actualReferences = this.getReferencesAtCaret() || [];
if (actualReferences.length > expectedReferences.length) {
// Find the unaccounted-for reference.
for (const actual of actualReferences) {
if (!ts.forEach(expectedReferences, r => r.start === actual.textSpan.start)) {
this.raiseError(`A reference ${stringify(actual)} is unaccounted for.`);
}
}
// Probably will never reach here.
this.raiseError(`There are ${actualReferences.length} references but only ${expectedReferences.length} were expected.`);
}
for (const reference of expectedReferences) {
const { fileName, start, end } = reference;
if (reference.marker && reference.marker.data) {
const { isWriteAccess, isDefinition } = reference.marker.data;
this.verifyReferencesWorker(actualReferences, fileName, start, end, isWriteAccess, isDefinition);
}
else {
this.verifyReferencesWorker(actualReferences, fileName, start, end);
}
}
}
public verifyReferencesOf(range: Range, references: Range[]) {
this.goToRangeStart(range);
this.verifyReferencesAre(references);
}
public verifyRangesReferenceEachOther(ranges?: Range[]) {
ranges = ranges || this.getRanges();
assert(ranges.length);
for (const range of ranges) {
this.verifyReferencesOf(range, ranges);
}
}
public verifyReferenceGroups(startRanges: Range | Range[], parts: FourSlashInterface.ReferenceGroup[]): void {
interface ReferenceGroupJson {
definition: string | { text: string, range: ts.TextSpan };
references: ts.ReferenceEntry[];
}
const fullExpected = ts.map<FourSlashInterface.ReferenceGroup, ReferenceGroupJson>(parts, ({ definition, ranges }) => ({
definition: typeof definition === "string" ? definition : { ...definition, range: textSpanFromRange(definition.range) },
references: ranges.map(rangeToReferenceEntry),
}));
for (const startRange of toArray(startRanges)) {
this.goToRangeStart(startRange);
const fullActual = ts.map<ts.ReferencedSymbol, ReferenceGroupJson>(this.findReferencesAtCaret(), ({ definition, references }, i) => {
const text = definition.displayParts.map(d => d.text).join("");
return {
definition: typeof fullExpected[i].definition === "string" ? text : { text, range: definition.textSpan },
references,
};
});
this.assertObjectsEqual(fullActual, fullExpected);
}
function rangeToReferenceEntry(r: Range): ts.ReferenceEntry {
const { isWriteAccess, isDefinition, isInString } = (r.marker && r.marker.data) || { isWriteAccess: false, isDefinition: false, isInString: undefined };
const result: ts.ReferenceEntry = { fileName: r.fileName, textSpan: textSpanFromRange(r), isWriteAccess: !!isWriteAccess, isDefinition: !!isDefinition };
if (isInString !== undefined) {
result.isInString = isInString;
}
return result;
}
}
public verifyNoReferences(markerNameOrRange?: string | Range) {
if (markerNameOrRange) {
if (ts.isString(markerNameOrRange)) {
this.goToMarker(markerNameOrRange);
}
else {
this.goToRangeStart(markerNameOrRange);
}
}
const refs = this.getReferencesAtCaret();
if (refs && refs.length) {
this.raiseError(`Expected getReferences to fail, but saw references: ${stringify(refs)}`);
}
}
public verifySingleReferenceGroup(definition: FourSlashInterface.ReferenceGroupDefinition, ranges?: Range[]) {
ranges = ranges || this.getRanges();
this.verifyReferenceGroups(ranges, [{ definition, ranges }]);
}
private assertObjectsEqual<T>(fullActual: T, fullExpected: T, msgPrefix = ""): void {
const recur = <U>(actual: U, expected: U, path: string) => {
const fail = (msg: string) => {
this.raiseError(`${msgPrefix} At ${path}: ${msg}
Expected: ${stringify(fullExpected)}
Actual: ${stringify(fullActual)}`);
};
if ((actual === undefined) !== (expected === undefined)) {
fail(`Expected ${expected}, got ${actual}`);
}
for (const key in actual) {
if (ts.hasProperty(actual as any, key)) {
const ak = actual[key], ek = expected[key];
if (typeof ak === "object" && typeof ek === "object") {
recur(ak, ek, path ? path + "." + key : key);
}
else if (ak !== ek) {
fail(`Expected '${key}' to be '${ek}', got '${ak}'`);
}
}
}
for (const key in expected) {
if (ts.hasProperty(expected as any, key)) {
if (!ts.hasProperty(actual as any, key)) {
fail(`${msgPrefix}Missing property '${key}'`);
}
}
}
};
if (fullActual === undefined || fullExpected === undefined) {
if (fullActual === fullExpected) {
return;
}
this.raiseError(`${msgPrefix}
Expected: ${stringify(fullExpected)}
Actual: ${stringify(fullActual)}`);
}
recur(fullActual, fullExpected, "");
}
public verifyDisplayPartsOfReferencedSymbol(expected: ts.SymbolDisplayPart[]) {
const referencedSymbols = this.findReferencesAtCaret();
if (referencedSymbols.length === 0) {
this.raiseError("No referenced symbols found at current caret position");
}
else if (referencedSymbols.length > 1) {
this.raiseError("More than one referenced symbol found");
}
assert.equal(TestState.getDisplayPartsJson(referencedSymbols[0].definition.displayParts),
TestState.getDisplayPartsJson(expected), this.messageAtLastKnownMarker("referenced symbol definition display parts"));
}
private verifyReferencesWorker(references: ts.ReferenceEntry[], fileName: string, start: number, end: number, isWriteAccess?: boolean, isDefinition?: boolean) {
for (const reference of references) {
if (reference && reference.fileName === fileName && reference.textSpan.start === start && ts.textSpanEnd(reference.textSpan) === end) {
if (typeof isWriteAccess !== "undefined" && reference.isWriteAccess !== isWriteAccess) {
this.raiseError(`verifyReferencesAtPositionListContains failed - item isWriteAccess value does not match, actual: ${reference.isWriteAccess}, expected: ${isWriteAccess}.`);
}
if (typeof isDefinition !== "undefined" && reference.isDefinition !== isDefinition) {
this.raiseError(`verifyReferencesAtPositionListContains failed - item isDefinition value does not match, actual: ${reference.isDefinition}, expected: ${isDefinition}.`);
}
return;
}
}
const missingItem = { fileName, start, end, isWriteAccess, isDefinition };
this.raiseError(`verifyReferencesAtPositionListContains failed - could not find the item: ${stringify(missingItem)} in the returned list: (${stringify(references)})`);
}
private getCompletionListAtCaret(options?: FourSlashInterface.CompletionsAtOptions): ts.CompletionInfo {
return this.languageService.getCompletionsAtPosition(this.activeFile.fileName, this.currentCaretPosition, options);
}
private getCompletionEntryDetails(entryName: string, source?: string): ts.CompletionEntryDetails {
return this.languageService.getCompletionEntryDetails(this.activeFile.fileName, this.currentCaretPosition, entryName, this.formatCodeSettings, source);
}
private getReferencesAtCaret() {
return this.languageService.getReferencesAtPosition(this.activeFile.fileName, this.currentCaretPosition);
}
private findReferencesAtCaret() {
return this.languageService.findReferences(this.activeFile.fileName, this.currentCaretPosition);
}
public getSyntacticDiagnostics(expected: string) {
const diagnostics = this.languageService.getSyntacticDiagnostics(this.activeFile.fileName);
this.testDiagnostics(expected, diagnostics);
}
public getSemanticDiagnostics(expected: string) {
const diagnostics = this.languageService.getSemanticDiagnostics(this.activeFile.fileName);
this.testDiagnostics(expected, diagnostics);
}
private testDiagnostics(expected: string, diagnostics: ReadonlyArray<ts.Diagnostic>) {
const realized = ts.realizeDiagnostics(diagnostics, "\r\n");
const actual = stringify(realized);
assert.equal(actual, expected);
}
public verifyQuickInfoAt(markerName: string, expectedText: string, expectedDocumentation?: string) {
this.goToMarker(markerName);
this.verifyQuickInfoString(expectedText, expectedDocumentation);
}
public verifyQuickInfos(namesAndTexts: { [name: string]: string | [string, string] }) {
for (const name in namesAndTexts) {
if (ts.hasProperty(namesAndTexts, name)) {
const text = namesAndTexts[name];
if (ts.isArray(text)) {
assert(text.length === 2);
const [expectedText, expectedDocumentation] = text;
this.verifyQuickInfoAt(name, expectedText, expectedDocumentation);
}
else {
this.verifyQuickInfoAt(name, text);
}
}
}
}
public verifyQuickInfoString(expectedText: string, expectedDocumentation?: string) {
if (expectedDocumentation === "") {
throw new Error("Use 'undefined' instead");
}
const actualQuickInfo = this.languageService.getQuickInfoAtPosition(this.activeFile.fileName, this.currentCaretPosition);
const actualQuickInfoText = actualQuickInfo ? ts.displayPartsToString(actualQuickInfo.displayParts) : "";
const actualQuickInfoDocumentation = actualQuickInfo ? ts.displayPartsToString(actualQuickInfo.documentation) : "";
assert.equal(actualQuickInfoText, expectedText, this.messageAtLastKnownMarker("quick info text"));
assert.equal(actualQuickInfoDocumentation, expectedDocumentation || "", this.assertionMessageAtLastKnownMarker("quick info doc"));
}
public verifyQuickInfoDisplayParts(kind: string, kindModifiers: string, textSpan: { start: number; length: number; },
displayParts: ts.SymbolDisplayPart[],
documentation: ts.SymbolDisplayPart[],
tags: ts.JSDocTagInfo[]
) {
const actualQuickInfo = this.languageService.getQuickInfoAtPosition(this.activeFile.fileName, this.currentCaretPosition);
assert.equal(actualQuickInfo.kind, kind, this.messageAtLastKnownMarker("QuickInfo kind"));
assert.equal(actualQuickInfo.kindModifiers, kindModifiers, this.messageAtLastKnownMarker("QuickInfo kindModifiers"));
assert.equal(JSON.stringify(actualQuickInfo.textSpan), JSON.stringify(textSpan), this.messageAtLastKnownMarker("QuickInfo textSpan"));
assert.equal(TestState.getDisplayPartsJson(actualQuickInfo.displayParts), TestState.getDisplayPartsJson(displayParts), this.messageAtLastKnownMarker("QuickInfo displayParts"));
assert.equal(TestState.getDisplayPartsJson(actualQuickInfo.documentation), TestState.getDisplayPartsJson(documentation), this.messageAtLastKnownMarker("QuickInfo documentation"));
assert.equal(actualQuickInfo.tags.length, tags.length, this.messageAtLastKnownMarker("QuickInfo tags"));
ts.zipWith(tags, actualQuickInfo.tags, (expectedTag, actualTag) => {
assert.equal(expectedTag.name, actualTag.name);
assert.equal(expectedTag.text, actualTag.text, this.messageAtLastKnownMarker("QuickInfo tag " + actualTag.name));
});
}
public verifyRangesAreRenameLocations(options?: Range[] | { findInStrings?: boolean, findInComments?: boolean, ranges?: Range[] }) {
if (ts.isArray(options)) {
this.verifyRenameLocations(options, options);
}
else {
const ranges = options && options.ranges || this.getRanges();
this.verifyRenameLocations(ranges, { ranges, ...options });
}
}
public verifyRenameLocations(startRanges: Range | Range[], options: Range[] | { findInStrings?: boolean, findInComments?: boolean, ranges: Range[] }) {
let findInStrings: boolean, findInComments: boolean, ranges: Range[];
if (ts.isArray(options)) {
findInStrings = findInComments = false;
ranges = options;
}
else {
findInStrings = !!options.findInStrings;
findInComments = !!options.findInComments;
ranges = options.ranges;
}
for (const startRange of toArray(startRanges)) {
this.goToRangeStart(startRange);
const renameInfo = this.languageService.getRenameInfo(this.activeFile.fileName, this.currentCaretPosition);
if (!renameInfo.canRename) {
this.raiseError("Expected rename to succeed, but it actually failed.");
break;
}
let references = this.languageService.findRenameLocations(
this.activeFile.fileName, this.currentCaretPosition, findInStrings, findInComments);
ranges = ranges || this.getRanges();
if (!references) {
if (ranges.length !== 0) {
this.raiseError(`Expected ${ranges.length} rename locations; got none.`);
}
return;
}
if (ranges.length !== references.length) {
this.raiseError("Rename location count does not match result.\n\nExpected: " + stringify(ranges) + "\n\nActual:" + stringify(references));
}
ranges = ranges.sort((r1, r2) => r1.start - r2.start);
references = references.sort((r1, r2) => r1.textSpan.start - r2.textSpan.start);
ts.zipWith(references, ranges, (reference, range) => {
if (reference.textSpan.start !== range.start || ts.textSpanEnd(reference.textSpan) !== range.end) {
this.raiseError("Rename location results do not match.\n\nExpected: " + stringify(ranges) + "\n\nActual:" + stringify(references));
}
});
}
}
public verifyQuickInfoExists(negative: boolean) {
const actualQuickInfo = this.languageService.getQuickInfoAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (negative) {
if (actualQuickInfo) {
this.raiseError("verifyQuickInfoExists failed. Expected quick info NOT to exist");
}
}
else {
if (!actualQuickInfo) {
this.raiseError("verifyQuickInfoExists failed. Expected quick info to exist");
}
}
}
public verifyCurrentSignatureHelpIs(expected: string) {
const help = this.getActiveSignatureHelpItem();
assert.equal(
ts.displayPartsToString(help.prefixDisplayParts) +
help.parameters.map(p => ts.displayPartsToString(p.displayParts)).join(ts.displayPartsToString(help.separatorDisplayParts)) +
ts.displayPartsToString(help.suffixDisplayParts), expected);
}
public verifyCurrentParameterIsVariable(isVariable: boolean) {
const signature = this.getActiveSignatureHelpItem();
assert.isOk(signature);
assert.equal(isVariable, signature.isVariadic);
}
public verifyCurrentParameterHelpName(name: string) {
const activeParameter = this.getActiveParameter();
const activeParameterName = activeParameter.name;
assert.equal(activeParameterName, name);
}
public verifyCurrentParameterSpanIs(parameter: string) {
const activeParameter = this.getActiveParameter();
assert.equal(ts.displayPartsToString(activeParameter.displayParts), parameter);
}
public verifyCurrentParameterHelpDocComment(docComment: string) {
const activeParameter = this.getActiveParameter();
const activeParameterDocComment = activeParameter.documentation;
assert.equal(ts.displayPartsToString(activeParameterDocComment), docComment, this.assertionMessageAtLastKnownMarker("current parameter Help DocComment"));
}
public verifyCurrentSignatureHelpParameterCount(expectedCount: number) {
assert.equal(this.getActiveSignatureHelpItem().parameters.length, expectedCount);
}
public verifyCurrentSignatureHelpIsVariadic(expected: boolean) {
assert.equal(this.getActiveSignatureHelpItem().isVariadic, expected);
}
public verifyCurrentSignatureHelpDocComment(docComment: string) {
const actualDocComment = this.getActiveSignatureHelpItem().documentation;
assert.equal(ts.displayPartsToString(actualDocComment), docComment, this.assertionMessageAtLastKnownMarker("current signature help doc comment"));
}
public verifyCurrentSignatureHelpTags(tags: ts.JSDocTagInfo[]) {
const actualTags = this.getActiveSignatureHelpItem().tags;
assert.equal(actualTags.length, tags.length, this.assertionMessageAtLastKnownMarker("signature help tags"));
ts.zipWith(tags, actualTags, (expectedTag, actualTag) => {
assert.equal(expectedTag.name, actualTag.name);
assert.equal(expectedTag.text, actualTag.text, this.assertionMessageAtLastKnownMarker("signature help tag " + actualTag.name));
});
}
public verifySignatureHelpCount(expected: number) {
const help = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
const actual = help && help.items ? help.items.length : 0;
assert.equal(actual, expected);
}
public verifySignatureHelpArgumentCount(expected: number) {
const signatureHelpItems = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
const actual = signatureHelpItems.argumentCount;
assert.equal(actual, expected);
}
public verifySignatureHelpPresent(shouldBePresent = true) {
const actual = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
if (shouldBePresent) {
if (!actual) {
this.raiseError("Expected signature help to be present, but it wasn't");
}
}
else {
if (actual) {
this.raiseError(`Expected no signature help, but got "${stringify(actual)}"`);
}
}
}
private validate(name: string, expected: string, actual: string) {
if (expected && expected !== actual) {
this.raiseError("Expected " + name + " '" + expected + "'. Got '" + actual + "' instead.");
}
}
public verifyRenameInfoSucceeded(displayName?: string, fullDisplayName?: string, kind?: string, kindModifiers?: string) {
const renameInfo = this.languageService.getRenameInfo(this.activeFile.fileName, this.currentCaretPosition);
if (!renameInfo.canRename) {
this.raiseError("Rename did not succeed");
}
this.validate("displayName", displayName, renameInfo.displayName);
this.validate("fullDisplayName", fullDisplayName, renameInfo.fullDisplayName);
this.validate("kind", kind, renameInfo.kind);
this.validate("kindModifiers", kindModifiers, renameInfo.kindModifiers);
if (this.getRanges().length !== 1) {
this.raiseError("Expected a single range to be selected in the test file.");
}
const expectedRange = this.getRanges()[0];
if (renameInfo.triggerSpan.start !== expectedRange.start ||
ts.textSpanEnd(renameInfo.triggerSpan) !== expectedRange.end) {
this.raiseError("Expected triggerSpan [" + expectedRange.start + "," + expectedRange.end + "). Got [" +
renameInfo.triggerSpan.start + "," + ts.textSpanEnd(renameInfo.triggerSpan) + ") instead.");
}
}
public verifyRenameInfoFailed(message?: string) {
const renameInfo = this.languageService.getRenameInfo(this.activeFile.fileName, this.currentCaretPosition);
if (renameInfo.canRename) {
this.raiseError("Rename was expected to fail");
}
this.validate("error", message, renameInfo.localizedErrorMessage);
}
private getActiveSignatureHelpItem() {
const help = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
const index = help.selectedItemIndex;
return help.items[index];
}
private getActiveParameter(): ts.SignatureHelpParameter {
const help = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
const item = help.items[help.selectedItemIndex];
const currentParam = help.argumentIndex;
return item.parameters[currentParam];
}
private alignmentForExtraInfo = 50;
private spanInfoToString(spanInfo: ts.TextSpan, prefixString: string) {
let resultString = "SpanInfo: " + JSON.stringify(spanInfo);
if (spanInfo) {
const spanString = this.activeFile.content.substr(spanInfo.start, spanInfo.length);
const spanLineMap = ts.computeLineStarts(spanString);
for (let i = 0; i < spanLineMap.length; i++) {
if (!i) {
resultString += "\n";
}
resultString += prefixString + spanString.substring(spanLineMap[i], spanLineMap[i + 1]);
}
resultString += "\n" + prefixString + ":=> (" + this.getLineColStringAtPosition(spanInfo.start) + ") to (" + this.getLineColStringAtPosition(ts.textSpanEnd(spanInfo)) + ")";
}
return resultString;
}
private baselineCurrentFileLocations(getSpanAtPos: (pos: number) => ts.TextSpan): string {
const fileLineMap = ts.computeLineStarts(this.activeFile.content);
let nextLine = 0;
let resultString = "";
let currentLine: string;
let previousSpanInfo: string;
let startColumn: number;
let length: number;
const prefixString = " >";
let pos = 0;
const addSpanInfoString = () => {
if (previousSpanInfo) {
resultString += currentLine;
let thisLineMarker = ts.repeatString(" ", startColumn) + ts.repeatString("~", length);
thisLineMarker += ts.repeatString(" ", this.alignmentForExtraInfo - thisLineMarker.length - prefixString.length + 1);
resultString += thisLineMarker;
resultString += "=> Pos: (" + (pos - length) + " to " + (pos - 1) + ") ";
resultString += " " + previousSpanInfo;
previousSpanInfo = undefined;
}
};
for (; pos < this.activeFile.content.length; pos++) {
if (pos === 0 || pos === fileLineMap[nextLine]) {
nextLine++;
addSpanInfoString();
if (resultString.length) {
resultString += "\n--------------------------------";
}
currentLine = "\n" + nextLine.toString() + ts.repeatString(" ", 3 - nextLine.toString().length) + ">" + this.activeFile.content.substring(pos, fileLineMap[nextLine]) + "\n ";
startColumn = 0;
length = 0;
}
const spanInfo = this.spanInfoToString(getSpanAtPos(pos), prefixString);
if (previousSpanInfo && previousSpanInfo !== spanInfo) {
addSpanInfoString();
previousSpanInfo = spanInfo;
startColumn = startColumn + length;
length = 1;
}
else {
previousSpanInfo = spanInfo;
length++;
}
}
addSpanInfoString();
return resultString;
}
public getBreakpointStatementLocation(pos: number) {
return this.languageService.getBreakpointStatementAtPosition(this.activeFile.fileName, pos);
}
public baselineCurrentFileBreakpointLocations() {
let baselineFile = this.testData.globalOptions[MetadataOptionNames.baselineFile];
if (!baselineFile) {
baselineFile = this.activeFile.fileName.replace(this.basePath + "/breakpointValidation", "bpSpan");
baselineFile = baselineFile.replace(ts.Extension.Ts, ".baseline");
}
Harness.Baseline.runBaseline(
baselineFile,
() => {
return this.baselineCurrentFileLocations(pos => this.getBreakpointStatementLocation(pos));
});
}
public baselineGetEmitOutput() {
// Find file to be emitted
const emitFiles: FourSlashFile[] = []; // List of FourSlashFile that has emitThisFile flag on
const allFourSlashFiles = this.testData.files;
for (const file of allFourSlashFiles) {
if (file.fileOptions[MetadataOptionNames.emitThisFile] === "true") {
// Find a file with the flag emitThisFile turned on
emitFiles.push(file);
}
}
// If there is not emiThisFile flag specified in the test file, throw an error
if (emitFiles.length === 0) {
this.raiseError("No emitThisFile is specified in the test file");
}
Harness.Baseline.runBaseline(
this.testData.globalOptions[MetadataOptionNames.baselineFile],
() => {
let resultString = "";
// Loop through all the emittedFiles and emit them one by one
emitFiles.forEach(emitFile => {
const emitOutput = this.languageService.getEmitOutput(emitFile.fileName);
// Print emitOutputStatus in readable format
resultString += "EmitSkipped: " + emitOutput.emitSkipped + Harness.IO.newLine();
if (emitOutput.emitSkipped) {
resultString += "Diagnostics:" + Harness.IO.newLine();
const diagnostics = ts.getPreEmitDiagnostics(this.languageService.getProgram());
for (const diagnostic of diagnostics) {
if (!ts.isString(diagnostic.messageText)) {
let chainedMessage = <ts.DiagnosticMessageChain>diagnostic.messageText;
let indentation = " ";
while (chainedMessage) {
resultString += indentation + chainedMessage.messageText + Harness.IO.newLine();
chainedMessage = chainedMessage.next;
indentation = indentation + " ";
}
}
else {
resultString += " " + diagnostic.messageText + Harness.IO.newLine();
}
}
}
for (const outputFile of emitOutput.outputFiles) {
const fileName = "FileName : " + outputFile.name + Harness.IO.newLine();
resultString = resultString + fileName + outputFile.text;
}
resultString += Harness.IO.newLine();
});
return resultString;
});
}
public baselineQuickInfo() {
let baselineFile = this.testData.globalOptions[MetadataOptionNames.baselineFile];
if (!baselineFile) {
baselineFile = ts.getBaseFileName(this.activeFile.fileName).replace(ts.Extension.Ts, ".baseline");
}
Harness.Baseline.runBaseline(
baselineFile,
() => stringify(
this.testData.markers.map(marker => ({
marker,
quickInfo: this.languageService.getQuickInfoAtPosition(marker.fileName, marker.position)
}))
));
}
public printBreakpointLocation(pos: number) {
Harness.IO.log("\n**Pos: " + pos + " " + this.spanInfoToString(this.getBreakpointStatementLocation(pos), " "));
}
public printBreakpointAtCurrentLocation() {
this.printBreakpointLocation(this.currentCaretPosition);
}
public printCurrentParameterHelp() {
const help = this.languageService.getSignatureHelpItems(this.activeFile.fileName, this.currentCaretPosition);
Harness.IO.log(stringify(help));
}
public printCurrentQuickInfo() {
const quickInfo = this.languageService.getQuickInfoAtPosition(this.activeFile.fileName, this.currentCaretPosition);
Harness.IO.log("Quick Info: " + quickInfo.displayParts.map(part => part.text).join(""));
}
public printErrorList() {
const syntacticErrors = this.languageService.getSyntacticDiagnostics(this.activeFile.fileName);
const semanticErrors = this.languageService.getSemanticDiagnostics(this.activeFile.fileName);
const errorList = ts.concatenate(syntacticErrors, semanticErrors);
Harness.IO.log(`Error list (${errorList.length} errors)`);
if (errorList.length) {
errorList.forEach(err => {
Harness.IO.log(
"start: " + err.start +
", length: " + err.length +
", message: " + ts.flattenDiagnosticMessageText(err.messageText, Harness.IO.newLine()));
});
}
}
public printCurrentFileState(showWhitespace: boolean, makeCaretVisible: boolean) {
for (const file of this.testData.files) {
const active = (this.activeFile === file);
Harness.IO.log(`=== Script (${file.fileName}) ${(active ? "(active, cursor at |)" : "")} ===`);
let content = this.getFileContent(file.fileName);
if (active) {
content = content.substr(0, this.currentCaretPosition) + (makeCaretVisible ? "|" : "") + content.substr(this.currentCaretPosition);
}
if (showWhitespace) {
content = makeWhitespaceVisible(content);
}
Harness.IO.log(content);
}
}
public printCurrentSignatureHelp() {
const sigHelp = this.getActiveSignatureHelpItem();
Harness.IO.log(stringify(sigHelp));
}
public printCompletionListMembers(options: ts.GetCompletionsAtPositionOptions | undefined) {
const completions = this.getCompletionListAtCaret(options);
this.printMembersOrCompletions(completions);
}
private printMembersOrCompletions(info: ts.CompletionInfo) {
if (info === undefined) { return "No completion info."; }
const { entries } = info;
function pad(s: string, length: number) {
return s + new Array(length - s.length + 1).join(" ");
}
function max<T>(arr: T[], selector: (x: T) => number): number {
return arr.reduce((prev, x) => Math.max(prev, selector(x)), 0);
}
const longestNameLength = max(entries, m => m.name.length);
const longestKindLength = max(entries, m => m.kind.length);
entries.sort((m, n) => m.sortText > n.sortText ? 1 : m.sortText < n.sortText ? -1 : m.name > n.name ? 1 : m.name < n.name ? -1 : 0);
const membersString = entries.map(m => `${pad(m.name, longestNameLength)} ${pad(m.kind, longestKindLength)} ${m.kindModifiers} ${m.isRecommended ? "recommended " : ""}${m.source === undefined ? "" : m.source}`).join("\n");
Harness.IO.log(membersString);
}
public printContext() {
ts.forEach(this.languageServiceAdapterHost.getFilenames(), Harness.IO.log);
}
public deleteChar(count = 1) {
let offset = this.currentCaretPosition;
const ch = "";
const checkCadence = (count >> 2) + 1;
for (let i = 0; i < count; i++) {
this.editScriptAndUpdateMarkers(this.activeFile.fileName, offset, offset + 1, ch);
if (i % checkCadence === 0) {
this.checkPostEditInvariants();
}
// Handle post-keystroke formatting
if (this.enableFormatting) {
const edits = this.languageService.getFormattingEditsAfterKeystroke(this.activeFile.fileName, offset, ch, this.formatCodeSettings);
if (edits.length) {
offset += this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
}
}
this.checkPostEditInvariants();
}
public replace(start: number, length: number, text: string) {
this.editScriptAndUpdateMarkers(this.activeFile.fileName, start, start + length, text);
this.checkPostEditInvariants();
}
public deleteCharBehindMarker(count = 1) {
let offset = this.currentCaretPosition;
const ch = "";
const checkCadence = (count >> 2) + 1;
for (let i = 0; i < count; i++) {
this.currentCaretPosition--;
offset--;
this.editScriptAndUpdateMarkers(this.activeFile.fileName, offset, offset + 1, ch);
if (i % checkCadence === 0) {
this.checkPostEditInvariants();
}
// Don't need to examine formatting because there are no formatting changes on backspace.
}
this.checkPostEditInvariants();
}
// Enters lines of text at the current caret position
public type(text: string, highFidelity = false) {
let offset = this.currentCaretPosition;
const prevChar = " ";
const checkCadence = (text.length >> 2) + 1;
for (let i = 0; i < text.length; i++) {
const ch = text.charAt(i);
this.editScriptAndUpdateMarkers(this.activeFile.fileName, offset, offset, ch);
if (highFidelity) {
this.languageService.getBraceMatchingAtPosition(this.activeFile.fileName, offset);
}
this.currentCaretPosition++;
offset++;
if (highFidelity) {
if (ch === "(" || ch === ",") {
/* Signature help*/
this.languageService.getSignatureHelpItems(this.activeFile.fileName, offset);
}
else if (prevChar === " " && /A-Za-z_/.test(ch)) {
/* Completions */
this.languageService.getCompletionsAtPosition(this.activeFile.fileName, offset, { includeExternalModuleExports: false, includeInsertTextCompletions: false });
}
if (i % checkCadence === 0) {
this.checkPostEditInvariants();
}
}
// Handle post-keystroke formatting
if (this.enableFormatting) {
const edits = this.languageService.getFormattingEditsAfterKeystroke(this.activeFile.fileName, offset, ch, this.formatCodeSettings);
if (edits.length) {
offset += this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
}
}
this.checkPostEditInvariants();
}
// Enters text as if the user had pasted it
public paste(text: string) {
const start = this.currentCaretPosition;
this.editScriptAndUpdateMarkers(this.activeFile.fileName, this.currentCaretPosition, this.currentCaretPosition, text);
this.checkPostEditInvariants();
const offset = this.currentCaretPosition += text.length;
// Handle formatting
if (this.enableFormatting) {
const edits = this.languageService.getFormattingEditsForRange(this.activeFile.fileName, start, offset, this.formatCodeSettings);
if (edits.length) {
this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
}
this.checkPostEditInvariants();
}
private checkPostEditInvariants() {
if (this.testType !== FourSlashTestType.Native) {
// getSourcefile() results can not be serialized. Only perform these verifications
// if running against a native LS object.
return;
}
const incrementalSourceFile = this.languageService.getNonBoundSourceFile(this.activeFile.fileName);
Utils.assertInvariants(incrementalSourceFile, /*parent:*/ undefined);
const incrementalSyntaxDiagnostics = incrementalSourceFile.parseDiagnostics;
// Check syntactic structure
const content = this.getFileContent(this.activeFile.fileName);
const referenceSourceFile = ts.createLanguageServiceSourceFile(
this.activeFile.fileName, createScriptSnapShot(content), ts.ScriptTarget.Latest, /*version:*/ "0", /*setNodeParents:*/ false);
const referenceSyntaxDiagnostics = referenceSourceFile.parseDiagnostics;
Utils.assertDiagnosticsEquals(incrementalSyntaxDiagnostics, referenceSyntaxDiagnostics);
Utils.assertStructuralEquals(incrementalSourceFile, referenceSourceFile);
}
/**
* @returns The number of characters added to the file as a result of the edits.
* May be negative.
*/
private applyEdits(fileName: string, edits: ts.TextChange[], isFormattingEdit: boolean): number {
// We get back a set of edits, but langSvc.editScript only accepts one at a time. Use this to keep track
// of the incremental offset from each edit to the next. We assume these edit ranges don't overlap
// Copy this so we don't ruin someone else's copy
edits = JSON.parse(JSON.stringify(edits));
// Get a snapshot of the content of the file so we can make sure any formatting edits didn't destroy non-whitespace characters
const oldContent = this.getFileContent(fileName);
let runningOffset = 0;
for (let i = 0; i < edits.length; i++) {
const edit = edits[i];
const offsetStart = edit.span.start;
const offsetEnd = offsetStart + edit.span.length;
this.editScriptAndUpdateMarkers(fileName, offsetStart, offsetEnd, edit.newText);
const editDelta = edit.newText.length - edit.span.length;
if (offsetStart <= this.currentCaretPosition) {
if (offsetEnd <= this.currentCaretPosition) {
// The entirety of the edit span falls before the caret position, shift the caret accordingly
this.currentCaretPosition += editDelta;
}
else {
// The span being replaced includes the caret position, place the caret at the beginning of the span
this.currentCaretPosition = offsetStart;
}
}
runningOffset += editDelta;
// Update positions of any future edits affected by this change
for (let j = i + 1; j < edits.length; j++) {
if (edits[j].span.start >= edits[i].span.start) {
edits[j].span.start += editDelta;
}
}
}
if (isFormattingEdit) {
const newContent = this.getFileContent(fileName);
if (this.removeWhitespace(newContent) !== this.removeWhitespace(oldContent)) {
this.raiseError("Formatting operation destroyed non-whitespace content");
}
}
return runningOffset;
}
public copyFormatOptions(): ts.FormatCodeSettings {
return ts.clone(this.formatCodeSettings);
}
public setFormatOptions(formatCodeOptions: ts.FormatCodeOptions | ts.FormatCodeSettings): ts.FormatCodeSettings {
const oldFormatCodeOptions = this.formatCodeSettings;
this.formatCodeSettings = ts.toEditorSettings(formatCodeOptions);
return oldFormatCodeOptions;
}
public formatDocument() {
const edits = this.languageService.getFormattingEditsForDocument(this.activeFile.fileName, this.formatCodeSettings);
this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
public formatSelection(start: number, end: number) {
const edits = this.languageService.getFormattingEditsForRange(this.activeFile.fileName, start, end, this.formatCodeSettings);
this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
public formatOnType(pos: number, key: string) {
const edits = this.languageService.getFormattingEditsAfterKeystroke(this.activeFile.fileName, pos, key, this.formatCodeSettings);
this.applyEdits(this.activeFile.fileName, edits, /*isFormattingEdit*/ true);
}
private editScriptAndUpdateMarkers(fileName: string, editStart: number, editEnd: number, newText: string) {
this.languageServiceAdapterHost.editScript(fileName, editStart, editEnd, newText);
for (const marker of this.testData.markers) {
if (marker.fileName === fileName) {
marker.position = updatePosition(marker.position);
}
}
for (const range of this.testData.ranges) {
if (range.fileName === fileName) {
range.start = updatePosition(range.start);
range.end = updatePosition(range.end);
}
}
function updatePosition(position: number) {
if (position > editStart) {
if (position < editEnd) {
// Inside the edit - mark it as invalidated (?)
return -1;
}
else {
// Move marker back/forward by the appropriate amount
return position + (editStart - editEnd) + newText.length;
}
}
else {
return position;
}
}
}
private removeWhitespace(text: string): string {
return text.replace(/\s/g, "");
}
public goToBOF() {
this.goToPosition(0);
}
public goToEOF() {
const len = this.getFileContent(this.activeFile.fileName).length;
this.goToPosition(len);
}
public goToRangeStart({ fileName, start }: Range) {
this.openFile(fileName);
this.goToPosition(start);
}
public goToTypeDefinition(definitionIndex: number) {
const definitions = this.languageService.getTypeDefinitionAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (!definitions || !definitions.length) {
this.raiseError("goToTypeDefinition failed - expected to find at least one definition location but got 0");
}
if (definitionIndex >= definitions.length) {
this.raiseError(`goToTypeDefinition failed - definitionIndex value (${definitionIndex}) exceeds definition list size (${definitions.length})`);
}
const definition = definitions[definitionIndex];
this.openFile(definition.fileName);
this.currentCaretPosition = definition.textSpan.start;
}
public verifyTypeDefinitionsCount(negative: boolean, expectedCount: number) {
const assertFn = negative ? assert.notEqual : assert.equal;
const definitions = this.languageService.getTypeDefinitionAtPosition(this.activeFile.fileName, this.currentCaretPosition);
const actualCount = definitions && definitions.length || 0;
assertFn(actualCount, expectedCount, this.messageAtLastKnownMarker("Type definitions Count"));
}
public verifyImplementationListIsEmpty(negative: boolean) {
const implementations = this.languageService.getImplementationAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (negative) {
assert.isTrue(implementations && implementations.length > 0, "Expected at least one implementation but got 0");
}
else {
assert.isUndefined(implementations, "Expected implementation list to be empty but implementations returned");
}
}
public verifyGoToDefinitionName(expectedName: string, expectedContainerName: string) {
const definitions = this.languageService.getDefinitionAtPosition(this.activeFile.fileName, this.currentCaretPosition);
const actualDefinitionName = definitions && definitions.length ? definitions[0].name : "";
const actualDefinitionContainerName = definitions && definitions.length ? definitions[0].containerName : "";
assert.equal(actualDefinitionName, expectedName, this.messageAtLastKnownMarker("Definition Info Name"));
assert.equal(actualDefinitionContainerName, expectedContainerName, this.messageAtLastKnownMarker("Definition Info Container Name"));
}
public goToImplementation() {
const implementations = this.languageService.getImplementationAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (!implementations || !implementations.length) {
this.raiseError("goToImplementation failed - expected to find at least one implementation location but got 0");
}
if (implementations.length > 1) {
this.raiseError(`goToImplementation failed - more than 1 implementation returned (${implementations.length})`);
}
const implementation = implementations[0];
this.openFile(implementation.fileName);
this.currentCaretPosition = implementation.textSpan.start;
}
public verifyRangesInImplementationList(markerName: string) {
this.goToMarker(markerName);
const implementations: ImplementationLocationInformation[] = this.languageService.getImplementationAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (!implementations || !implementations.length) {
this.raiseError("verifyRangesInImplementationList failed - expected to find at least one implementation location but got 0");
}
for (let i = 0; i < implementations.length; i++) {
for (let j = 0; j < implementations.length; j++) {
if (i !== j && implementationsAreEqual(implementations[i], implementations[j])) {
const { textSpan, fileName } = implementations[i];
const end = textSpan.start + textSpan.length;
this.raiseError(`Duplicate implementations returned for range (${textSpan.start}, ${end}) in ${fileName}`);
}
}
}
const ranges = this.getRanges();
if (!ranges || !ranges.length) {
this.raiseError("verifyRangesInImplementationList failed - expected to find at least one range in test source");
}
const unsatisfiedRanges: Range[] = [];
const delayedErrors: string[] = [];
for (const range of ranges) {
const length = range.end - range.start;
const matchingImpl = ts.find(implementations, impl =>
range.fileName === impl.fileName && range.start === impl.textSpan.start && length === impl.textSpan.length);
if (matchingImpl) {
if (range.marker && range.marker.data) {
const expected = <{ displayParts?: ts.SymbolDisplayPart[], parts: string[], kind?: string }>range.marker.data;
if (expected.displayParts) {
if (!ts.arrayIsEqualTo(expected.displayParts, matchingImpl.displayParts, displayPartIsEqualTo)) {
delayedErrors.push(`Mismatched display parts: expected ${JSON.stringify(expected.displayParts)}, actual ${JSON.stringify(matchingImpl.displayParts)}`);
}
}
else if (expected.parts) {
const actualParts = matchingImpl.displayParts.map(p => p.text);
if (!ts.arrayIsEqualTo(expected.parts, actualParts)) {
delayedErrors.push(`Mismatched non-tagged display parts: expected ${JSON.stringify(expected.parts)}, actual ${JSON.stringify(actualParts)}`);
}
}
if (expected.kind !== undefined) {
if (expected.kind !== matchingImpl.kind) {
delayedErrors.push(`Mismatched kind: expected ${JSON.stringify(expected.kind)}, actual ${JSON.stringify(matchingImpl.kind)}`);
}
}
}
matchingImpl.matched = true;
}
else {
unsatisfiedRanges.push(range);
}
}
if (delayedErrors.length) {
this.raiseError(delayedErrors.join("\n"));
}
const unmatchedImplementations = implementations.filter(impl => !impl.matched);
if (unmatchedImplementations.length || unsatisfiedRanges.length) {
let error = "Not all ranges or implementations are satisfied";
if (unsatisfiedRanges.length) {
error += "\nUnsatisfied ranges:";
for (const range of unsatisfiedRanges) {
error += `\n (${range.start}, ${range.end}) in ${range.fileName}: ${this.rangeText(range)}`;
}
}
if (unmatchedImplementations.length) {
error += "\nUnmatched implementations:";
for (const impl of unmatchedImplementations) {
const end = impl.textSpan.start + impl.textSpan.length;
error += `\n (${impl.textSpan.start}, ${end}) in ${impl.fileName}: ${this.getFileContent(impl.fileName).slice(impl.textSpan.start, end)}`;
}
}
this.raiseError(error);
}
function implementationsAreEqual(a: ImplementationLocationInformation, b: ImplementationLocationInformation) {
return a.fileName === b.fileName && TestState.textSpansEqual(a.textSpan, b.textSpan);
}
function displayPartIsEqualTo(a: ts.SymbolDisplayPart, b: ts.SymbolDisplayPart): boolean {
return a.kind === b.kind && a.text === b.text;
}
}
public getMarkers(): Marker[] {
// Return a copy of the list
return this.testData.markers.slice(0);
}
public getMarkerNames(): string[] {
return ts.arrayFrom(this.testData.markerPositions.keys());
}
public getRanges(): Range[] {
return this.testData.ranges;
}
public rangesByText(): ts.Map<Range[]> {
const result = ts.createMultiMap<Range>();
for (const range of this.getRanges()) {
const text = this.rangeText(range);
result.add(text, range);
}
return result;
}
private rangeText({ fileName, start, end }: Range): string {
return this.getFileContent(fileName).slice(start, end);
}
public verifyCaretAtMarker(markerName = "") {
const pos = this.getMarkerByName(markerName);
if (pos.fileName !== this.activeFile.fileName) {
throw new Error(`verifyCaretAtMarker failed - expected to be in file "${pos.fileName}", but was in file "${this.activeFile.fileName}"`);
}
if (pos.position !== this.currentCaretPosition) {
throw new Error(`verifyCaretAtMarker failed - expected to be at marker "/*${markerName}*/, but was at position ${this.currentCaretPosition}(${this.getLineColStringAtPosition(this.currentCaretPosition)})`);
}
}
private getIndentation(fileName: string, position: number, indentStyle: ts.IndentStyle, baseIndentSize: number): number {
const formatOptions = ts.clone(this.formatCodeSettings);
formatOptions.indentStyle = indentStyle;
formatOptions.baseIndentSize = baseIndentSize;
return this.languageService.getIndentationAtPosition(fileName, position, formatOptions);
}
public verifyIndentationAtCurrentPosition(numberOfSpaces: number, indentStyle: ts.IndentStyle = ts.IndentStyle.Smart, baseIndentSize = 0) {
const actual = this.getIndentation(this.activeFile.fileName, this.currentCaretPosition, indentStyle, baseIndentSize);
const lineCol = this.getLineColStringAtPosition(this.currentCaretPosition);
if (actual !== numberOfSpaces) {
this.raiseError(`verifyIndentationAtCurrentPosition failed at ${lineCol} - expected: ${numberOfSpaces}, actual: ${actual}`);
}
}
public verifyIndentationAtPosition(fileName: string, position: number, numberOfSpaces: number, indentStyle: ts.IndentStyle = ts.IndentStyle.Smart, baseIndentSize = 0) {
const actual = this.getIndentation(fileName, position, indentStyle, baseIndentSize);
const lineCol = this.getLineColStringAtPosition(position);
if (actual !== numberOfSpaces) {
this.raiseError(`verifyIndentationAtPosition failed at ${lineCol} - expected: ${numberOfSpaces}, actual: ${actual}`);
}
}
public verifyCurrentLineContent(text: string) {
const actual = this.getCurrentLineContent();
if (actual !== text) {
throw new Error("verifyCurrentLineContent\n" +
"\tExpected: \"" + text + "\"\n" +
"\t Actual: \"" + actual + "\"");
}
}
public verifyCurrentFileContent(text: string) {
const actual = this.getFileContent(this.activeFile.fileName);
if (actual !== text) {
throw new Error(`verifyCurrentFileContent failed:\n${showTextDiff(text, actual)}`);
}
}
public verifyTextAtCaretIs(text: string) {
const actual = this.getFileContent(this.activeFile.fileName).substring(this.currentCaretPosition, this.currentCaretPosition + text.length);
if (actual !== text) {
throw new Error("verifyTextAtCaretIs\n" +
"\tExpected: \"" + text + "\"\n" +
"\t Actual: \"" + actual + "\"");
}
}
public verifyCurrentNameOrDottedNameSpanText(text: string) {
const span = this.languageService.getNameOrDottedNameSpan(this.activeFile.fileName, this.currentCaretPosition, this.currentCaretPosition);
if (!span) {
this.raiseError("verifyCurrentNameOrDottedNameSpanText\n" +
"\tExpected: \"" + text + "\"\n" +
"\t Actual: undefined");
}
const actual = this.getFileContent(this.activeFile.fileName).substring(span.start, ts.textSpanEnd(span));
if (actual !== text) {
this.raiseError("verifyCurrentNameOrDottedNameSpanText\n" +
"\tExpected: \"" + text + "\"\n" +
"\t Actual: \"" + actual + "\"");
}
}
private getNameOrDottedNameSpan(pos: number) {
return this.languageService.getNameOrDottedNameSpan(this.activeFile.fileName, pos, pos);
}
public baselineCurrentFileNameOrDottedNameSpans() {
Harness.Baseline.runBaseline(
this.testData.globalOptions[MetadataOptionNames.baselineFile],
() => {
return this.baselineCurrentFileLocations(pos =>
this.getNameOrDottedNameSpan(pos));
});
}
public printNameOrDottedNameSpans(pos: number) {
Harness.IO.log(this.spanInfoToString(this.getNameOrDottedNameSpan(pos), "**"));
}
private verifyClassifications(expected: { classificationType: string; text: string; textSpan?: TextSpan }[], actual: ts.ClassifiedSpan[], sourceFileText: string) {
if (actual.length !== expected.length) {
this.raiseError("verifyClassifications failed - expected total classifications to be " + expected.length +
", but was " + actual.length +
jsonMismatchString());
}
ts.zipWith(expected, actual, (expectedClassification, actualClassification) => {
const expectedType = expectedClassification.classificationType;
if (expectedType !== actualClassification.classificationType) {
this.raiseError("verifyClassifications failed - expected classifications type to be " +
expectedType + ", but was " +
actualClassification.classificationType +
jsonMismatchString());
}
const expectedSpan = expectedClassification.textSpan;
const actualSpan = actualClassification.textSpan;
if (expectedSpan) {
const expectedLength = expectedSpan.end - expectedSpan.start;
if (expectedSpan.start !== actualSpan.start || expectedLength !== actualSpan.length) {
this.raiseError("verifyClassifications failed - expected span of text to be " +
"{start=" + expectedSpan.start + ", length=" + expectedLength + "}, but was " +
"{start=" + actualSpan.start + ", length=" + actualSpan.length + "}" +
jsonMismatchString());
}
}
const actualText = this.activeFile.content.substr(actualSpan.start, actualSpan.length);
if (expectedClassification.text !== actualText) {
this.raiseError("verifyClassifications failed - expected classified text to be " +
expectedClassification.text + ", but was " +
actualText +
jsonMismatchString());
}
});
function jsonMismatchString() {
const showActual = actual.map(({ classificationType, textSpan }) =>
({ classificationType, text: sourceFileText.slice(textSpan.start, textSpan.start + textSpan.length) }));
return Harness.IO.newLine() +
"expected: '" + Harness.IO.newLine() + stringify(expected) + "'" + Harness.IO.newLine() +
"actual: '" + Harness.IO.newLine() + stringify(showActual) + "'";
}
}
public verifyProjectInfo(expected: string[]) {
if (this.testType === FourSlashTestType.Server) {
const actual = (<ts.server.SessionClient>this.languageService).getProjectInfo(
this.activeFile.fileName,
/* needFileNameList */ true
);
assert.equal(
expected.join(","),
actual.fileNames.map(file => {
return file.replace(this.basePath + "/", "");
}).join(",")
);
}
}
public verifySemanticClassifications(expected: { classificationType: string; text: string }[]) {
const actual = this.languageService.getSemanticClassifications(this.activeFile.fileName,
ts.createTextSpan(0, this.activeFile.content.length));
this.verifyClassifications(expected, actual, this.activeFile.content);
}
public verifySyntacticClassifications(expected: { classificationType: string; text: string }[]) {
const actual = this.languageService.getSyntacticClassifications(this.activeFile.fileName,
ts.createTextSpan(0, this.activeFile.content.length));
this.verifyClassifications(expected, actual, this.activeFile.content);
}
public verifyOutliningSpans(spans: TextSpan[]) {
const actual = this.languageService.getOutliningSpans(this.activeFile.fileName);
if (actual.length !== spans.length) {
this.raiseError(`verifyOutliningSpans failed - expected total spans to be ${spans.length}, but was ${actual.length}`);
}
ts.zipWith(spans, actual, (expectedSpan, actualSpan, i) => {
if (expectedSpan.start !== actualSpan.textSpan.start || expectedSpan.end !== ts.textSpanEnd(actualSpan.textSpan)) {
this.raiseError(`verifyOutliningSpans failed - span ${(i + 1)} expected: (${expectedSpan.start},${expectedSpan.end}), actual: (${actualSpan.textSpan.start},${ts.textSpanEnd(actualSpan.textSpan)})`);
}
});
}
public verifyTodoComments(descriptors: string[], spans: TextSpan[]) {
const actual = this.languageService.getTodoComments(this.activeFile.fileName,
descriptors.map(d => { return { text: d, priority: 0 }; }));
if (actual.length !== spans.length) {
this.raiseError(`verifyTodoComments failed - expected total spans to be ${spans.length}, but was ${actual.length}`);
}
ts.zipWith(spans, actual, (expectedSpan, actualComment, i) => {
const actualCommentSpan = ts.createTextSpan(actualComment.position, actualComment.message.length);
if (expectedSpan.start !== actualCommentSpan.start || expectedSpan.end !== ts.textSpanEnd(actualCommentSpan)) {
this.raiseError(`verifyOutliningSpans failed - span ${(i + 1)} expected: (${expectedSpan.start},${expectedSpan.end}), actual: (${actualCommentSpan.start},${ts.textSpanEnd(actualCommentSpan)})`);
}
});
}
/**
* Finds and applies a code action corresponding to the supplied parameters.
* If index is undefined, applies the unique code action available.
* @param errorCode The error code that generated the code action.
* @param index The nth (0-index-based) codeaction available generated by errorCode.
*/
public getAndApplyCodeActions(errorCode?: number, index?: number) {
const fileName = this.activeFile.fileName;
this.applyCodeActions(this.getCodeFixes(fileName, errorCode), index);
}
public applyCodeActionFromCompletion(markerName: string, options: FourSlashInterface.VerifyCompletionActionOptions) {
this.goToMarker(markerName);
const actualCompletion = this.getCompletionListAtCaret({ includeExternalModuleExports: true, includeInsertTextCompletions: false }).entries.find(e =>
e.name === options.name && e.source === options.source);
if (!actualCompletion.hasAction) {
this.raiseError(`Completion for ${options.name} does not have an associated action.`);
}
const details = this.getCompletionEntryDetails(options.name, actualCompletion.source);
if (details.codeActions.length !== 1) {
this.raiseError(`Expected one code action, got ${details.codeActions.length}`);
}
if (details.codeActions[0].description !== options.description) {
this.raiseError(`Expected description to be:\n${options.description}\ngot:\n${details.codeActions[0].description}`);
}
this.applyCodeActions(details.codeActions);
this.verifyNewContent(options);
}
public verifyRangeIs(expectedText: string, includeWhiteSpace?: boolean) {
const ranges = this.getRanges();
if (ranges.length !== 1) {
this.raiseError("Exactly one range should be specified in the testfile.");
}
const actualText = this.rangeText(ranges[0]);
const result = includeWhiteSpace
? actualText === expectedText
: this.removeWhitespace(actualText) === this.removeWhitespace(expectedText);
if (!result) {
this.raiseError(`Actual range text doesn't match expected text.\n${showTextDiff(expectedText, actualText)}`);
}
}
/**
* Compares expected text to the text that would be in the sole range
* (ie: [|...|]) in the file after applying the codefix sole codefix
* in the source file.
*/
public verifyRangeAfterCodeFix(expectedText: string, includeWhiteSpace?: boolean, errorCode?: number, index?: number) {
this.getAndApplyCodeActions(errorCode, index);
this.verifyRangeIs(expectedText, includeWhiteSpace);
}
public verifyCodeFixAll(options: FourSlashInterface.VerifyCodeFixAllOptions): void {
const { fixId, newFileContent } = options;
const fixIds = ts.mapDefined(this.getCodeFixes(this.activeFile.fileName), a => a.fixId);
ts.Debug.assert(ts.contains(fixIds, fixId), "No available code fix has that group id.", () => `Expected '${fixId}'. Available action ids: ${fixIds}`);
const { changes, commands } = this.languageService.getCombinedCodeFix({ type: "file", fileName: this.activeFile.fileName }, fixId, this.formatCodeSettings);
assert.deepEqual(commands, options.commands);
assert(changes.every(c => c.fileName === this.activeFile.fileName), "TODO: support testing codefixes that touch multiple files");
this.applyChanges(changes);
this.verifyCurrentFileContent(newFileContent);
}
/**
* Applies fixes for the errors in fileName and compares the results to
* expectedContents after all fixes have been applied.
*
* Note: applying one codefix may generate another (eg: remove duplicate implements
* may generate an extends -> interface conversion fix).
* @param expectedContents The contents of the file after the fixes are applied.
* @param fileName The file to check. If not supplied, the current open file is used.
*/
public verifyFileAfterCodeFix(expectedContents: string, fileName?: string) {
fileName = fileName ? fileName : this.activeFile.fileName;
this.applyCodeActions(this.getCodeFixes(fileName));
const actualContents: string = this.getFileContent(fileName);
if (this.removeWhitespace(actualContents) !== this.removeWhitespace(expectedContents)) {
this.raiseError(`Actual text doesn't match expected text. Actual:\n${actualContents}\n\nExpected:\n${expectedContents}`);
}
}
public verifyCodeFix(options: FourSlashInterface.VerifyCodeFixOptions) {
const fileName = this.activeFile.fileName;
const actions = this.getCodeFixes(fileName, options.errorCode);
let index = options.index;
if (index === undefined) {
if (!(actions && actions.length === 1)) {
this.raiseError(`Should find exactly one codefix, but ${actions ? actions.length : "none"} found. ${actions ? actions.map(a => `${Harness.IO.newLine()} "${a.description}"`) : ""}`);
}
index = 0;
}
else {
if (!(actions && actions.length >= index + 1)) {
this.raiseError(`Should find at least ${index + 1} codefix(es), but ${actions ? actions.length : "none"} found.`);
}
}
const action = actions[index];
assert.equal(action.description, options.description);
for (const change of action.changes) {
this.applyEdits(change.fileName, change.textChanges, /*isFormattingEdit*/ false);
}
this.verifyNewContent(options);
}
private verifyNewContent(options: FourSlashInterface.NewContentOptions) {
if (options.newFileContent !== undefined) {
assert(!options.newRangeContent);
this.verifyCurrentFileContent(options.newFileContent);
}
else {
this.verifyRangeIs(options.newRangeContent, /*includeWhitespace*/ true);
}
}
/**
* Rerieves a codefix satisfying the parameters, or undefined if no such codefix is found.
* @param fileName Path to file where error should be retrieved from.
*/
private getCodeFixes(fileName: string, errorCode?: number): ts.CodeFixAction[] {
const diagnosticsForCodeFix = this.getDiagnostics(fileName).map(diagnostic => ({
start: diagnostic.start,
length: diagnostic.length,
code: diagnostic.code
}));
return ts.flatMap(ts.deduplicate(diagnosticsForCodeFix, ts.equalOwnProperties), diagnostic => {
if (errorCode !== undefined && errorCode !== diagnostic.code) {
return;
}
return this.languageService.getCodeFixesAtPosition(fileName, diagnostic.start, diagnostic.start + diagnostic.length, [diagnostic.code], this.formatCodeSettings);
});
}
private applyCodeActions(actions: ReadonlyArray<ts.CodeAction>, index?: number): void {
if (index === undefined) {
if (!(actions && actions.length === 1)) {
this.raiseError(`Should find exactly one codefix, but ${actions ? actions.length : "none"} found. ${actions ? actions.map(a => `${Harness.IO.newLine()} "${a.description}"`) : ""}`);
}
index = 0;
}
else {
if (!(actions && actions.length >= index + 1)) {
this.raiseError(`Should find at least ${index + 1} codefix(es), but ${actions ? actions.length : "none"} found.`);
}
}
this.applyChanges(actions[index].changes);
}
private applyChanges(changes: ReadonlyArray<ts.FileTextChanges>): void {
for (const change of changes) {
this.applyEdits(change.fileName, change.textChanges, /*isFormattingEdit*/ false);
}
}
public verifyImportFixAtPosition(expectedTextArray: string[], errorCode?: number) {
const ranges = this.getRanges().filter(r => r.fileName === this.activeFile.fileName);
if (ranges.length !== 1) {
this.raiseError("Exactly one range should be specified in the testfile.");
}
const codeFixes = this.getCodeFixes(this.activeFile.fileName, errorCode);
if (codeFixes.length === 0) {
if (expectedTextArray.length !== 0) {
this.raiseError("No codefixes returned.");
}
return;
}
const actualTextArray: string[] = [];
const scriptInfo = this.languageServiceAdapterHost.getScriptInfo(codeFixes[0].changes[0].fileName);
const originalContent = scriptInfo.content;
for (const codeFix of codeFixes) {
this.applyEdits(codeFix.changes[0].fileName, codeFix.changes[0].textChanges, /*isFormattingEdit*/ false);
const text = this.rangeText(ranges[0]);
actualTextArray.push(text);
scriptInfo.updateContent(originalContent);
}
if (expectedTextArray.length !== actualTextArray.length) {
this.raiseError(`Expected ${expectedTextArray.length} import fixes, got ${actualTextArray.length}`);
}
ts.zipWith(expectedTextArray, actualTextArray, (expected, actual, index) => {
if (expected !== actual) {
this.raiseError(`Import fix at index ${index} doesn't match.\n${showTextDiff(expected, actual)}`);
}
});
}
public verifyDocCommentTemplate(expected: ts.TextInsertion | undefined) {
const name = "verifyDocCommentTemplate";
const actual = this.languageService.getDocCommentTemplateAtPosition(this.activeFile.fileName, this.currentCaretPosition);
if (expected === undefined) {
if (actual) {
this.raiseError(`${name} failed - expected no template but got {newText: "${actual.newText}", caretOffset: ${actual.caretOffset}}`);
}
return;
}
else {
if (actual === undefined) {
this.raiseError(`${name} failed - expected the template {newText: "${expected.newText}", caretOffset: "${expected.caretOffset}"} but got nothing instead`);
}
if (actual.newText !== expected.newText) {
this.raiseError(`${name} failed for expected insertion.\n${showTextDiff(expected.newText, actual.newText)}`);
}
if (actual.caretOffset !== expected.caretOffset) {
this.raiseError(`${name} failed - expected caretOffset: ${expected.caretOffset}\nactual caretOffset:${actual.caretOffset}`);
}
}
}
public verifyBraceCompletionAtPosition(negative: boolean, openingBrace: string) {
const openBraceMap = ts.createMapFromTemplate<ts.CharacterCodes>({
"(": ts.CharacterCodes.openParen,
"{": ts.CharacterCodes.openBrace,
"[": ts.CharacterCodes.openBracket,
"'": ts.CharacterCodes.singleQuote,
'"': ts.CharacterCodes.doubleQuote,
"`": ts.CharacterCodes.backtick,
"<": ts.CharacterCodes.lessThan
});
const charCode = openBraceMap.get(openingBrace);
if (!charCode) {
this.raiseError(`Invalid openingBrace '${openingBrace}' specified.`);
}
const position = this.currentCaretPosition;
const validBraceCompletion = this.languageService.isValidBraceCompletionAtPosition(this.activeFile.fileName, position, charCode);
if (!negative && !validBraceCompletion) {
this.raiseError(`${position} is not a valid brace completion position for ${openingBrace}`);
}
if (negative && validBraceCompletion) {
this.raiseError(`${position} is a valid brace completion position for ${openingBrace}`);
}
}
public verifyMatchingBracePosition(bracePosition: number, expectedMatchPosition: number) {
const actual = this.languageService.getBraceMatchingAtPosition(this.activeFile.fileName, bracePosition);
if (actual.length !== 2) {
this.raiseError(`verifyMatchingBracePosition failed - expected result to contain 2 spans, but it had ${actual.length}`);
}
let actualMatchPosition = -1;
if (bracePosition === actual[0].start) {
actualMatchPosition = actual[1].start;
}
else if (bracePosition === actual[1].start) {
actualMatchPosition = actual[0].start;
}
else {
this.raiseError(`verifyMatchingBracePosition failed - could not find the brace position: ${bracePosition} in the returned list: (${actual[0].start},${ts.textSpanEnd(actual[0])}) and (${actual[1].start},${ts.textSpanEnd(actual[1])})`);
}
if (actualMatchPosition !== expectedMatchPosition) {
this.raiseError(`verifyMatchingBracePosition failed - expected: ${actualMatchPosition}, actual: ${expectedMatchPosition}`);
}
}
public verifyNoMatchingBracePosition(bracePosition: number) {
const actual = this.languageService.getBraceMatchingAtPosition(this.activeFile.fileName, bracePosition);
if (actual.length !== 0) {
this.raiseError("verifyNoMatchingBracePosition failed - expected: 0 spans, actual: " + actual.length);
}
}
public verifySpanOfEnclosingComment(negative: boolean, onlyMultiLineDiverges?: boolean) {
const expected = !negative;
const position = this.currentCaretPosition;
const fileName = this.activeFile.fileName;
const actual = !!this.languageService.getSpanOfEnclosingComment(fileName, position, /*onlyMultiLine*/ false);
const actualOnlyMultiLine = !!this.languageService.getSpanOfEnclosingComment(fileName, position, /*onlyMultiLine*/ true);
if (expected !== actual || onlyMultiLineDiverges === (actual === actualOnlyMultiLine)) {
this.raiseError(`verifySpanOfEnclosingComment failed:
position: '${position}'
fileName: '${fileName}'
onlyMultiLineDiverges: '${onlyMultiLineDiverges}'
actual: '${actual}'
actualOnlyMultiLine: '${actualOnlyMultiLine}'
expected: '${expected}'.`);
}
}
/*
Check number of navigationItems which match both searchValue and matchKind,
if a filename is passed in, limit the results to that file.
Report an error if expected value and actual value do not match.
*/
public verifyNavigationItemsCount(expected: number, searchValue: string, matchKind?: string, fileName?: string) {
const items = this.languageService.getNavigateToItems(searchValue, /*maxResultCount*/ undefined, fileName);
let actual = 0;
// Count only the match that match the same MatchKind
for (const item of items) {
if (!matchKind || item.matchKind === matchKind) {
actual++;
}
}
if (expected !== actual) {
this.raiseError(`verifyNavigationItemsCount failed - found: ${actual} navigation items, expected: ${expected}.`);
}
}
/*
Verify that returned navigationItems from getNavigateToItems have matched searchValue, matchKind, and kind.
Report an error if getNavigateToItems does not find any matched searchValue.
*/
public verifyNavigationItemsListContains(
name: string,
kind: string,
searchValue: string,
matchKind: string,
fileName?: string,
parentName?: string) {
const items = this.languageService.getNavigateToItems(searchValue);
if (!items || items.length === 0) {
this.raiseError("verifyNavigationItemsListContains failed - found 0 navigation items, expected at least one.");
}
for (const item of items) {
if (item && item.name === name && item.kind === kind &&
(matchKind === undefined || item.matchKind === matchKind) &&
(fileName === undefined || item.fileName === fileName) &&
(parentName === undefined || item.containerName === parentName)) {
return;
}
}
// if there was an explicit match kind specified, then it should be validated.
if (matchKind !== undefined) {
const missingItem = { name, kind, searchValue, matchKind, fileName, parentName };
this.raiseError(`verifyNavigationItemsListContains failed - could not find the item: ${stringify(missingItem)} in the returned list: (${stringify(items)})`);
}
}
public verifyNavigationBar(json: any, options: { checkSpans?: boolean } | undefined) {
this.verifyNavigationTreeOrBar(json, this.languageService.getNavigationBarItems(this.activeFile.fileName), "Bar", options);
}
public verifyNavigationTree(json: any, options: { checkSpans?: boolean } | undefined) {
this.verifyNavigationTreeOrBar(json, this.languageService.getNavigationTree(this.activeFile.fileName), "Tree", options);
}
private verifyNavigationTreeOrBar(json: any, tree: any, name: "Tree" | "Bar", options: { checkSpans?: boolean } | undefined) {
if (JSON.stringify(tree, replacer) !== JSON.stringify(json)) {
this.raiseError(`verifyNavigation${name} failed - expected: ${stringify(json)}, got: ${stringify(tree, replacer)}`);
}
function replacer(key: string, value: any) {
switch (key) {
case "spans":
return options && options.checkSpans ? value : undefined;
case "start":
case "length":
// Never omit the values in a span, even if they are 0.
return value;
case "childItems":
return !value || value.length === 0 ? undefined : value;
default:
// Omit falsy values, those are presumed to be the default.
return value || undefined;
}
}
}
public printNavigationItems(searchValue: string) {
const items = this.languageService.getNavigateToItems(searchValue);
Harness.IO.log(`NavigationItems list (${items.length} items)`);
for (const item of items) {
Harness.IO.log(`name: ${item.name}, kind: ${item.kind}, parentName: ${item.containerName}, fileName: ${item.fileName}`);
}
}
public printNavigationBar() {
const items = this.languageService.getNavigationBarItems(this.activeFile.fileName);
Harness.IO.log(`Navigation bar (${items.length} items)`);
for (const item of items) {
Harness.IO.log(`${ts.repeatString(" ", item.indent)}name: ${item.text}, kind: ${item.kind}, childItems: ${item.childItems.map(child => child.text)}`);
}
}
private getOccurrencesAtCurrentPosition() {
return this.languageService.getOccurrencesAtPosition(this.activeFile.fileName, this.currentCaretPosition);
}
public verifyOccurrencesAtPositionListContains(fileName: string, start: number, end: number, isWriteAccess?: boolean) {
const occurrences = this.getOccurrencesAtCurrentPosition();
if (!occurrences || occurrences.length === 0) {
this.raiseError("verifyOccurrencesAtPositionListContains failed - found 0 references, expected at least one.");
}
for (const occurrence of occurrences) {
if (occurrence && occurrence.fileName === fileName && occurrence.textSpan.start === start && ts.textSpanEnd(occurrence.textSpan) === end) {
if (typeof isWriteAccess !== "undefined" && occurrence.isWriteAccess !== isWriteAccess) {
this.raiseError(`verifyOccurrencesAtPositionListContains failed - item isWriteAccess value does not match, actual: ${occurrence.isWriteAccess}, expected: ${isWriteAccess}.`);
}
return;
}
}
const missingItem = { fileName, start, end, isWriteAccess };
this.raiseError(`verifyOccurrencesAtPositionListContains failed - could not find the item: ${stringify(missingItem)} in the returned list: (${stringify(occurrences)})`);
}
public verifyOccurrencesAtPositionListCount(expectedCount: number) {
const occurrences = this.getOccurrencesAtCurrentPosition();
const actualCount = occurrences ? occurrences.length : 0;
if (expectedCount !== actualCount) {
this.raiseError(`verifyOccurrencesAtPositionListCount failed - actual: ${actualCount}, expected:${expectedCount}`);
}
}
private getDocumentHighlightsAtCurrentPosition(fileNamesToSearch: string[]) {
const filesToSearch = fileNamesToSearch.map(name => ts.combinePaths(this.basePath, name));
return this.languageService.getDocumentHighlights(this.activeFile.fileName, this.currentCaretPosition, filesToSearch);
}
public verifyRangesAreOccurrences(isWriteAccess?: boolean) {
const ranges = this.getRanges();
for (const r of ranges) {
this.goToRangeStart(r);
this.verifyOccurrencesAtPositionListCount(ranges.length);
for (const range of ranges) {
this.verifyOccurrencesAtPositionListContains(range.fileName, range.start, range.end, isWriteAccess);
}
}
}
public verifyRangesWithSameTextAreRenameLocations() {
this.rangesByText().forEach(ranges => this.verifyRangesAreRenameLocations(ranges));
}
public verifyRangesWithSameTextAreDocumentHighlights() {
this.rangesByText().forEach(ranges => this.verifyRangesAreDocumentHighlights(ranges));
}
public verifyDocumentHighlightsOf(startRange: Range, ranges: Range[]) {
ts.Debug.assert(ts.contains(ranges, startRange));
const fileNames = unique(ranges, range => range.fileName);
this.goToRangeStart(startRange);
this.verifyDocumentHighlights(ranges, fileNames);
}
public verifyRangesAreDocumentHighlights(ranges?: Range[]) {
ranges = ranges || this.getRanges();
const fileNames = unique(ranges, range => range.fileName);
for (const range of ranges) {
this.goToRangeStart(range);
this.verifyDocumentHighlights(ranges, fileNames);
}
}
private verifyDocumentHighlights(expectedRanges: Range[], fileNames: string[] = [this.activeFile.fileName]) {
const documentHighlights = this.getDocumentHighlightsAtCurrentPosition(fileNames) || [];
for (const dh of documentHighlights) {
if (fileNames.indexOf(dh.fileName) === -1) {
this.raiseError(`verifyDocumentHighlights failed - got highlights in unexpected file name ${dh.fileName}`);
}
}
for (const fileName of fileNames) {
const expectedRangesInFile = expectedRanges.filter(r => r.fileName === fileName);
const highlights = ts.find(documentHighlights, dh => dh.fileName === fileName);
if (!highlights) {
this.raiseError(`verifyDocumentHighlights failed - found no highlights in ${fileName}`);
}
const spansInFile = highlights.highlightSpans.sort((s1, s2) => s1.textSpan.start - s2.textSpan.start);
if (expectedRangesInFile.length !== spansInFile.length) {
this.raiseError(`verifyDocumentHighlights failed - In ${fileName}, expected ${expectedRangesInFile.length} highlights, got ${spansInFile.length}`);
}
ts.zipWith(expectedRangesInFile, spansInFile, (expectedRange, span) => {
if (span.textSpan.start !== expectedRange.start || ts.textSpanEnd(span.textSpan) !== expectedRange.end) {
this.raiseError(`verifyDocumentHighlights failed - span does not match, actual: ${stringify(span.textSpan)}, expected: ${expectedRange.start}--${expectedRange.end}`);
}
});
}
}
public verifyCodeFixAvailable(negative: boolean, info: FourSlashInterface.VerifyCodeFixAvailableOptions[] | undefined) {
const codeFixes = this.getCodeFixes(this.activeFile.fileName);
if (negative) {
if (codeFixes.length) {
this.raiseError(`verifyCodeFixAvailable failed - expected no fixes but found ${codeFixes.map(c => c.description)}.`);
}
return;
}
if (!codeFixes.length) {
this.raiseError(`verifyCodeFixAvailable failed - expected code fixes but none found.`);
}
if (info) {
assert.equal(info.length, codeFixes.length);
ts.zipWith(codeFixes, info, (fix, info) => {
assert.equal(fix.description, info.description);
this.assertObjectsEqual(fix.commands, info.commands);
});
}
}
public verifyApplicableRefactorAvailableAtMarker(negative: boolean, markerName: string) {
const marker = this.getMarkerByName(markerName);
const applicableRefactors = this.languageService.getApplicableRefactors(this.activeFile.fileName, marker.position);
const isAvailable = applicableRefactors && applicableRefactors.length > 0;
if (negative && isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableAtMarker failed - expected no refactor at marker ${markerName} but found some.`);
}
if (!negative && !isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableAtMarker failed - expected a refactor at marker ${markerName} but found none.`);
}
}
private getSelection(): ts.TextRange {
return {
pos: this.currentCaretPosition,
end: this.selectionEnd === -1 ? this.currentCaretPosition : this.selectionEnd
};
}
public verifyRefactorAvailable(negative: boolean, name: string, actionName?: string) {
const selection = this.getSelection();
let refactors = this.languageService.getApplicableRefactors(this.activeFile.fileName, selection) || [];
refactors = refactors.filter(r => r.name === name && (actionName === undefined || r.actions.some(a => a.name === actionName)));
const isAvailable = refactors.length > 0;
if (negative) {
if (isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableForRange failed - expected no refactor but found: ${refactors.map(r => r.name).join(", ")}`);
}
}
else {
if (!isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableForRange failed - expected a refactor but found none.`);
}
if (refactors.length > 1) {
this.raiseError(`${refactors.length} available refactors both have name ${name} and action ${actionName}`);
}
}
}
public verifyRefactor({ name, actionName, refactors }: FourSlashInterface.VerifyRefactorOptions) {
const selection = this.getSelection();
const actualRefactors = (this.languageService.getApplicableRefactors(this.activeFile.fileName, selection) || ts.emptyArray)
.filter(r => r.name === name && r.actions.some(a => a.name === actionName));
this.assertObjectsEqual(actualRefactors, refactors);
}
public verifyApplicableRefactorAvailableForRange(negative: boolean) {
const ranges = this.getRanges();
if (!(ranges && ranges.length === 1)) {
throw new Error("Exactly one refactor range is allowed per test.");
}
const applicableRefactors = this.languageService.getApplicableRefactors(this.activeFile.fileName, { pos: ranges[0].start, end: ranges[0].end });
const isAvailable = applicableRefactors && applicableRefactors.length > 0;
if (negative && isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableForRange failed - expected no refactor but found some.`);
}
if (!negative && !isAvailable) {
this.raiseError(`verifyApplicableRefactorAvailableForRange failed - expected a refactor but found none.`);
}
}
public applyRefactor({ refactorName, actionName, actionDescription, newContent: newContentWithRenameMarker }: FourSlashInterface.ApplyRefactorOptions) {
const range = this.getSelection();
const refactors = this.languageService.getApplicableRefactors(this.activeFile.fileName, range);
const refactorsWithName = refactors.filter(r => r.name === refactorName);
if (refactorsWithName.length === 0) {
this.raiseError(`The expected refactor: ${refactorName} is not available at the marker location.\nAvailable refactors: ${refactors.map(r => r.name)}`);
}
const action = ts.firstDefined(refactorsWithName, refactor => refactor.actions.find(a => a.name === actionName));
if (!action) {
this.raiseError(`The expected action: ${actionName} is not included in: ${ts.flatMap(refactorsWithName, r => r.actions.map(a => a.name))}`);
}
if (action.description !== actionDescription) {
this.raiseError(`Expected action description to be ${JSON.stringify(actionDescription)}, got: ${JSON.stringify(action.description)}`);
}
const editInfo = this.languageService.getEditsForRefactor(this.activeFile.fileName, this.formatCodeSettings, range, refactorName, actionName);
for (const edit of editInfo.edits) {
this.applyEdits(edit.fileName, edit.textChanges, /*isFormattingEdit*/ false);
}
const { renamePosition, newContent } = parseNewContent();
this.verifyCurrentFileContent(newContent);
if (renamePosition === undefined) {
if (editInfo.renameLocation !== undefined) {
this.raiseError(`Did not expect a rename location, got ${editInfo.renameLocation}`);
}
}
else {
// TODO: test editInfo.renameFilename value
assert.isDefined(editInfo.renameFilename);
if (renamePosition !== editInfo.renameLocation) {
this.raiseError(`Expected rename position of ${renamePosition}, but got ${editInfo.renameLocation}`);
}
}
function parseNewContent(): { renamePosition: number | undefined, newContent: string } {
const renamePosition = newContentWithRenameMarker.indexOf("/*RENAME*/");
if (renamePosition === -1) {
return { renamePosition: undefined, newContent: newContentWithRenameMarker };
}
else {
const newContent = newContentWithRenameMarker.slice(0, renamePosition) + newContentWithRenameMarker.slice(renamePosition + "/*RENAME*/".length);
return { renamePosition, newContent };
}
}
}
public verifyFileAfterApplyingRefactorAtMarker(
markerName: string,
expectedContent: string,
refactorNameToApply: string,
actionName: string,
formattingOptions?: ts.FormatCodeSettings) {
formattingOptions = formattingOptions || this.formatCodeSettings;
const markerPos = this.getMarkerByName(markerName).position;
const applicableRefactors = this.languageService.getApplicableRefactors(this.activeFile.fileName, markerPos);
const applicableRefactorToApply = ts.find(applicableRefactors, refactor => refactor.name === refactorNameToApply);
if (!applicableRefactorToApply) {
this.raiseError(`The expected refactor: ${refactorNameToApply} is not available at the marker location.`);
}
const editInfo = this.languageService.getEditsForRefactor(this.activeFile.fileName, formattingOptions, markerPos, refactorNameToApply, actionName);
for (const edit of editInfo.edits) {
this.applyEdits(edit.fileName, edit.textChanges, /*isFormattingEdit*/ false);
}
const actualContent = this.getFileContent(this.activeFile.fileName);
if (actualContent !== expectedContent) {
this.raiseError(`verifyFileAfterApplyingRefactors failed:\n${showTextDiff(expectedContent, actualContent)}`);
}
}
public printAvailableCodeFixes() {
const codeFixes = this.getCodeFixes(this.activeFile.fileName);
Harness.IO.log(stringify(codeFixes));
}
// Get the text of the entire line the caret is currently at
private getCurrentLineContent() {
const text = this.getFileContent(this.activeFile.fileName);
const pos = this.currentCaretPosition;
let startPos = pos, endPos = pos;
while (startPos > 0) {
const ch = text.charCodeAt(startPos - 1);
if (ch === ts.CharacterCodes.carriageReturn || ch === ts.CharacterCodes.lineFeed) {
break;
}
startPos--;
}
while (endPos < text.length) {
const ch = text.charCodeAt(endPos);
if (ch === ts.CharacterCodes.carriageReturn || ch === ts.CharacterCodes.lineFeed) {
break;
}
endPos++;
}
return text.substring(startPos, endPos);
}
private assertItemInCompletionList(
items: ts.CompletionEntry[],
entryId: ts.Completions.CompletionEntryIdentifier,
text: string | undefined,
documentation: string | undefined,
kind: string | undefined | { kind?: string, kindModifiers?: string },
spanIndex: number | undefined,
hasAction: boolean | undefined,
options: FourSlashInterface.VerifyCompletionListContainsOptions | undefined,
) {
const matchingItems = items.filter(item => item.name === entryId.name && item.source === entryId.source);
if (matchingItems.length === 0) {
const itemsString = items.map(item => stringify({ name: item.name, source: item.source, kind: item.kind })).join(",\n");
this.raiseError(`Expected "${stringify({ entryId, text, documentation, kind })}" to be in list [${itemsString}]`);
}
else if (matchingItems.length > 1) {
this.raiseError(`Found duplicate completion items for ${stringify(entryId)}`);
}
const item = matchingItems[0];
if (documentation !== undefined || text !== undefined || entryId.source !== undefined) {
const details = this.getCompletionEntryDetails(item.name, item.source);
if (documentation !== undefined) {
assert.equal(ts.displayPartsToString(details.documentation), documentation, this.assertionMessageAtLastKnownMarker("completion item documentation for " + entryId));
}
if (text !== undefined) {
assert.equal(ts.displayPartsToString(details.displayParts), text, this.assertionMessageAtLastKnownMarker("completion item detail text for " + entryId));
}
if (entryId.source === undefined) {
assert.equal(options && options.sourceDisplay, undefined);
}
else {
assert.deepEqual(details.source, [ts.textPart(options!.sourceDisplay)]);
}
}
if (kind !== undefined) {
if (typeof kind === "string") {
assert.equal(item.kind, kind, this.assertionMessageAtLastKnownMarker("completion item kind for " + entryId));
}
else {
if (kind.kind) {
assert.equal(item.kind, kind.kind, this.assertionMessageAtLastKnownMarker("completion item kind for " + entryId));
}
if (kind.kindModifiers !== undefined) {
assert.equal(item.kindModifiers, kind.kindModifiers, this.assertionMessageAtLastKnownMarker("completion item kindModifiers for " + entryId));
}
}
}
if (spanIndex !== undefined) {
const span = this.getTextSpanForRangeAtIndex(spanIndex);
assert.isTrue(TestState.textSpansEqual(span, item.replacementSpan), this.assertionMessageAtLastKnownMarker(stringify(span) + " does not equal " + stringify(item.replacementSpan) + " replacement span for " + entryId));
}
assert.equal(item.hasAction, hasAction, "hasAction");
assert.equal(item.isRecommended, options && options.isRecommended, "isRecommended");
assert.equal(item.insertText, options && options.insertText, "insertText");
if (options && options.replacementSpan) { // TODO: GH#21679
assert.deepEqual(item.replacementSpan, options && options.replacementSpan && textSpanFromRange(options.replacementSpan), "replacementSpan");
}
}
private findFile(indexOrName: string | number) {
let result: FourSlashFile;
if (typeof indexOrName === "number") {
const index = <number>indexOrName;
if (index >= this.testData.files.length) {
throw new Error(`File index (${index}) in openFile was out of range. There are only ${this.testData.files.length} files in this test.`);
}
else {
result = this.testData.files[index];
}
}
else if (ts.isString(indexOrName)) {
let name = <string>indexOrName;
// names are stored in the compiler with this relative path, this allows people to use goTo.file on just the fileName
name = name.indexOf("/") === -1 ? (this.basePath + "/" + name) : name;
const availableNames: string[] = [];
result = ts.forEach(this.testData.files, file => {
const fn = file.fileName;
if (fn) {
if (fn === name) {
return file;
}
availableNames.push(fn);
}
});
if (!result) {
throw new Error(`No test file named "${name}" exists. Available file names are: ${availableNames.join(", ")}`);
}
}
else {
throw new Error("Unknown argument type");
}
return result;
}
private getLineColStringAtPosition(position: number) {
const pos = this.languageServiceAdapterHost.positionToLineAndCharacter(this.activeFile.fileName, position);
return `line ${(pos.line + 1)}, col ${pos.character}`;
}
private getTextSpanForRangeAtIndex(index: number): ts.TextSpan {
const ranges = this.getRanges();
if (ranges && ranges.length > index) {
return textSpanFromRange(ranges[index]);
}
else {
this.raiseError("Supplied span index: " + index + " does not exist in range list of size: " + (ranges ? 0 : ranges.length));
}
}
public getMarkerByName(markerName: string) {
const markerPos = this.testData.markerPositions.get(markerName);
if (markerPos === undefined) {
throw new Error(`Unknown marker "${markerName}" Available markers: ${this.getMarkerNames().map(m => "\"" + m + "\"").join(", ")}`);
}
else {
return markerPos;
}
}
public setCancelled(numberOfCalls: number): void {
this.cancellationToken.setCancelled(numberOfCalls);
}
public resetCancelled(): void {
this.cancellationToken.resetCancelled();
}
private static textSpansEqual(a: ts.TextSpan, b: ts.TextSpan) {
return a && b && a.start === b.start && a.length === b.length;
}
}
function textSpanFromRange(range: FourSlash.Range): ts.TextSpan {
return ts.createTextSpanFromBounds(range.start, range.end);
}
export function runFourSlashTest(basePath: string, testType: FourSlashTestType, fileName: string) {
const content = Harness.IO.readFile(fileName);
runFourSlashTestContent(basePath, testType, content, fileName);
}
export function runFourSlashTestContent(basePath: string, testType: FourSlashTestType, content: string, fileName: string): void {
// Give file paths an absolute path for the virtual file system
const absoluteBasePath = ts.combinePaths(Harness.virtualFileSystemRoot, basePath);
const absoluteFileName = ts.combinePaths(Harness.virtualFileSystemRoot, fileName);
// Parse out the files and their metadata
const testData = parseTestData(absoluteBasePath, content, absoluteFileName);
const state = new TestState(absoluteBasePath, testType, testData);
const output = ts.transpileModule(content, { reportDiagnostics: true });
if (output.diagnostics.length > 0) {
throw new Error(`Syntax error in ${absoluteBasePath}: ${output.diagnostics[0].messageText}`);
}
runCode(output.outputText, state);
}
function runCode(code: string, state: TestState): void {
// Compile and execute the test
const wrappedCode =
`(function(test, goTo, verify, edit, debug, format, cancellation, classification, verifyOperationIsCancelled) {
${code}
})`;
try {
const test = new FourSlashInterface.Test(state);
const goTo = new FourSlashInterface.GoTo(state);
const verify = new FourSlashInterface.Verify(state);
const edit = new FourSlashInterface.Edit(state);
const debug = new FourSlashInterface.Debug(state);
const format = new FourSlashInterface.Format(state);
const cancellation = new FourSlashInterface.Cancellation(state);
const f = eval(wrappedCode);
f(test, goTo, verify, edit, debug, format, cancellation, FourSlashInterface.Classification, FourSlash.verifyOperationIsCancelled);
}
catch (err) {
throw err;
}
}
function chompLeadingSpace(content: string) {
const lines = content.split("\n");
for (const line of lines) {
if ((line.length !== 0) && (line.charAt(0) !== " ")) {
return content;
}
}
return lines.map(s => s.substr(1)).join("\n");
}
function parseTestData(basePath: string, contents: string, fileName: string): FourSlashData {
// Regex for parsing options in the format "@Alpha: Value of any sort"
const optionRegex = /^\s*@(\w+): (.*)\s*/;
// List of all the subfiles we've parsed out
const files: FourSlashFile[] = [];
// Global options
const globalOptions: { [s: string]: string; } = {};
// Marker positions
// Split up the input file by line
// Note: IE JS engine incorrectly handles consecutive delimiters here when using RegExp split, so
// we have to string-based splitting instead and try to figure out the delimiting chars
const lines = contents.split("\n");
const markerPositions = ts.createMap<Marker>();
const markers: Marker[] = [];
const ranges: Range[] = [];
// Stuff related to the subfile we're parsing
let currentFileContent: string = undefined;
let currentFileName = fileName;
let currentFileSymlinks: string[] | undefined;
let currentFileOptions: { [s: string]: string } = {};
function nextFile() {
const file = parseFileContent(currentFileContent, currentFileName, markerPositions, markers, ranges);
file.fileOptions = currentFileOptions;
file.symlinks = currentFileSymlinks;
// Store result file
files.push(file);
currentFileContent = undefined;
currentFileOptions = {};
currentFileName = fileName;
currentFileSymlinks = undefined;
}
for (let line of lines) {
const lineLength = line.length;
if (lineLength > 0 && line.charAt(lineLength - 1) === "\r") {
line = line.substr(0, lineLength - 1);
}
if (line.substr(0, 4) === "////") {
// Subfile content line
// Append to the current subfile content, inserting a newline needed
if (currentFileContent === undefined) {
currentFileContent = "";
}
else {
// End-of-line
currentFileContent = currentFileContent + "\n";
}
currentFileContent = currentFileContent + line.substr(4);
}
else if (line.substr(0, 2) === "//") {
// Comment line, check for global/file @options and record them
const match = optionRegex.exec(line.substr(2));
if (match) {
const [key, value] = match.slice(1);
if (!ts.contains(fileMetadataNames, key)) {
// Check if the match is already existed in the global options
if (globalOptions[key] !== undefined) {
throw new Error(`Global option '${key}' already exists`);
}
globalOptions[key] = value;
}
else {
switch (key) {
case MetadataOptionNames.fileName:
// Found an @FileName directive, if this is not the first then create a new subfile
if (currentFileContent) {
nextFile();
}
currentFileName = ts.isRootedDiskPath(value) ? value : basePath + "/" + value;
currentFileOptions[key] = value;
break;
case MetadataOptionNames.symlink:
currentFileSymlinks = ts.append(currentFileSymlinks, value);
break;
default:
// Add other fileMetadata flag
currentFileOptions[key] = value;
}
}
}
}
else if (line === "" || lineLength === 0) {
// Previously blank lines between fourslash content caused it to be considered as 2 files,
// Remove this behavior since it just causes errors now
}
else {
// Empty line or code line, terminate current subfile if there is one
if (currentFileContent) {
nextFile();
}
}
}
// @Filename is the only directive that can be used in a test that contains tsconfig.json file.
const config = ts.find(files, isConfig);
if (config) {
let directive = getNonFileNameOptionInFileList(files);
if (!directive) {
directive = getNonFileNameOptionInObject(globalOptions);
}
if (directive) {
throw Error(`It is not allowed to use ${config.fileName} along with directive '${directive}'`);
}
}
return {
markerPositions,
markers,
globalOptions,
files,
ranges
};
}
function isConfig(file: FourSlashFile): boolean {
return Harness.getConfigNameFromFileName(file.fileName) !== undefined;
}
function getNonFileNameOptionInFileList(files: FourSlashFile[]): string {
return ts.forEach(files, f => getNonFileNameOptionInObject(f.fileOptions));
}
function getNonFileNameOptionInObject(optionObject: { [s: string]: string }): string {
for (const option in optionObject) {
if (option !== MetadataOptionNames.fileName) {
return option;
}
}
return undefined;
}
const enum State {
none,
inSlashStarMarker,
inObjectMarker
}
function reportError(fileName: string, line: number, col: number, message: string) {
const errorMessage = fileName + "(" + line + "," + col + "): " + message;
throw new Error(errorMessage);
}
function recordObjectMarker(fileName: string, location: LocationInformation, text: string, markerMap: ts.Map<Marker>, markers: Marker[]): Marker {
let markerValue: any = undefined;
try {
// Attempt to parse the marker value as JSON
markerValue = JSON.parse("{ " + text + " }");
}
catch (e) {
reportError(fileName, location.sourceLine, location.sourceColumn, "Unable to parse marker text " + e.message);
}
if (markerValue === undefined) {
reportError(fileName, location.sourceLine, location.sourceColumn, "Object markers can not be empty");
return undefined;
}
const marker: Marker = {
fileName,
position: location.position,
data: markerValue
};
// Object markers can be anonymous
if (markerValue.name) {
markerMap.set(markerValue.name, marker);
}
markers.push(marker);
return marker;
}
function recordMarker(fileName: string, location: LocationInformation, name: string, markerMap: ts.Map<Marker>, markers: Marker[]): Marker {
const marker: Marker = {
fileName,
position: location.position
};
// Verify markers for uniqueness
if (markerMap.has(name)) {
const message = "Marker '" + name + "' is duplicated in the source file contents.";
reportError(marker.fileName, location.sourceLine, location.sourceColumn, message);
return undefined;
}
else {
markerMap.set(name, marker);
markers.push(marker);
return marker;
}
}
function parseFileContent(content: string, fileName: string, markerMap: ts.Map<Marker>, markers: Marker[], ranges: Range[]): FourSlashFile {
content = chompLeadingSpace(content);
// Any slash-star comment with a character not in this string is not a marker.
const validMarkerChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz$1234567890_";
/// The file content (minus metacharacters) so far
let output = "";
/// The current marker (or maybe multi-line comment?) we're parsing, possibly
let openMarker: LocationInformation = undefined;
/// A stack of the open range markers that are still unclosed
const openRanges: RangeLocationInformation[] = [];
/// A list of ranges we've collected so far */
let localRanges: Range[] = [];
/// The latest position of the start of an unflushed plain text area
let lastNormalCharPosition = 0;
/// The total number of metacharacters removed from the file (so far)
let difference = 0;
/// The fourslash file state object we are generating
let state: State = State.none;
/// Current position data
let line = 1;
let column = 1;
const flush = (lastSafeCharIndex: number) => {
output = output + content.substr(lastNormalCharPosition, lastSafeCharIndex === undefined ? undefined : lastSafeCharIndex - lastNormalCharPosition);
};
if (content.length > 0) {
let previousChar = content.charAt(0);
for (let i = 1; i < content.length; i++) {
const currentChar = content.charAt(i);
switch (state) {
case State.none:
if (previousChar === "[" && currentChar === "|") {
// found a range start
openRanges.push({
position: (i - 1) - difference,
sourcePosition: i - 1,
sourceLine: line,
sourceColumn: column,
});
// copy all text up to marker position
flush(i - 1);
lastNormalCharPosition = i + 1;
difference += 2;
}
else if (previousChar === "|" && currentChar === "]") {
// found a range end
const rangeStart = openRanges.pop();
if (!rangeStart) {
reportError(fileName, line, column, "Found range end with no matching start.");
}
const range: Range = {
fileName,
start: rangeStart.position,
end: (i - 1) - difference,
marker: rangeStart.marker
};
localRanges.push(range);
// copy all text up to range marker position
flush(i - 1);
lastNormalCharPosition = i + 1;
difference += 2;
}
else if (previousChar === "/" && currentChar === "*") {
// found a possible marker start
state = State.inSlashStarMarker;
openMarker = {
position: (i - 1) - difference,
sourcePosition: i - 1,
sourceLine: line,
sourceColumn: column,
};
}
else if (previousChar === "{" && currentChar === "|") {
// found an object marker start
state = State.inObjectMarker;
openMarker = {
position: (i - 1) - difference,
sourcePosition: i - 1,
sourceLine: line,
sourceColumn: column,
};
flush(i - 1);
}
break;
case State.inObjectMarker:
// Object markers are only ever terminated by |} and have no content restrictions
if (previousChar === "|" && currentChar === "}") {
// Record the marker
const objectMarkerNameText = content.substring(openMarker.sourcePosition + 2, i - 1).trim();
const marker = recordObjectMarker(fileName, openMarker, objectMarkerNameText, markerMap, markers);
if (openRanges.length > 0) {
openRanges[openRanges.length - 1].marker = marker;
}
// Set the current start to point to the end of the current marker to ignore its text
lastNormalCharPosition = i + 1;
difference += i + 1 - openMarker.sourcePosition;
// Reset the state
openMarker = undefined;
state = State.none;
}
break;
case State.inSlashStarMarker:
if (previousChar === "*" && currentChar === "/") {
// Record the marker
// start + 2 to ignore the */, -1 on the end to ignore the * (/ is next)
const markerNameText = content.substring(openMarker.sourcePosition + 2, i - 1).trim();
const marker = recordMarker(fileName, openMarker, markerNameText, markerMap, markers);
if (openRanges.length > 0) {
openRanges[openRanges.length - 1].marker = marker;
}
// Set the current start to point to the end of the current marker to ignore its text
flush(openMarker.sourcePosition);
lastNormalCharPosition = i + 1;
difference += i + 1 - openMarker.sourcePosition;
// Reset the state
openMarker = undefined;
state = State.none;
}
else if (validMarkerChars.indexOf(currentChar) < 0) {
if (currentChar === "*" && i < content.length - 1 && content.charAt(i + 1) === "/") {
// The marker is about to be closed, ignore the 'invalid' char
}
else {
// We've hit a non-valid marker character, so we were actually in a block comment
// Bail out the text we've gathered so far back into the output
flush(i);
lastNormalCharPosition = i;
openMarker = undefined;
state = State.none;
}
}
break;
}
if (currentChar === "\n" && previousChar === "\r") {
// Ignore trailing \n after a \r
continue;
}
else if (currentChar === "\n" || currentChar === "\r") {
line++;
column = 1;
continue;
}
column++;
previousChar = currentChar;
}
}
// Add the remaining text
flush(/*lastSafeCharIndex*/ undefined);
if (openRanges.length > 0) {
const openRange = openRanges[0];
reportError(fileName, openRange.sourceLine, openRange.sourceColumn, "Unterminated range.");
}
if (openMarker) {
reportError(fileName, openMarker.sourceLine, openMarker.sourceColumn, "Unterminated marker.");
}
// put ranges in the correct order
localRanges = localRanges.sort((a, b) => a.start < b.start ? -1 : 1);
localRanges.forEach((r) => { ranges.push(r); });
return {
content: output,
fileOptions: {},
version: 0,
fileName,
};
}
function stringify(data: any, replacer?: (key: string, value: any) => any): string {
return JSON.stringify(data, replacer, 2);
}
/** Collects an array of unique outputs. */
function unique<T>(inputs: T[], getOutput: (t: T) => string): string[] {
const set = ts.createMap<true>();
for (const input of inputs) {
const out = getOutput(input);
set.set(out, true);
}
return ts.arrayFrom(set.keys());
}
function toArray<T>(x: T | T[]): T[] {
return ts.isArray(x) ? x : [x];
}
function makeWhitespaceVisible(text: string) {
return text.replace(/ /g, "\u00B7").replace(/\r/g, "\u00B6").replace(/\n/g, "\u2193\n").replace(/\t/g, "\u2192\ ");
}
function showTextDiff(expected: string, actual: string): string {
// Only show whitespace if the difference is whitespace-only.
if (differOnlyByWhitespace(expected, actual)) {
expected = makeWhitespaceVisible(expected);
actual = makeWhitespaceVisible(actual);
}
return `Expected:\n${expected}\nActual:\n${actual}`;
}
function differOnlyByWhitespace(a: string, b: string) {
return stripWhitespace(a) === stripWhitespace(b);
}
function stripWhitespace(s: string): string {
return s.replace(/\s/g, "");
}
}
namespace FourSlashInterface {
export class Test {
constructor(private state: FourSlash.TestState) {
}
public markers(): FourSlash.Marker[] {
return this.state.getMarkers();
}
public markerNames(): string[] {
return this.state.getMarkerNames();
}
public marker(name?: string): FourSlash.Marker {
return this.state.getMarkerByName(name);
}
public ranges(): FourSlash.Range[] {
return this.state.getRanges();
}
public spans(): ts.TextSpan[] {
return this.ranges().map(r => ts.createTextSpan(r.start, r.end - r.start));
}
public rangesByText(): ts.Map<FourSlash.Range[]> {
return this.state.rangesByText();
}
public markerByName(s: string): FourSlash.Marker {
return this.state.getMarkerByName(s);
}
public symbolsInScope(range: FourSlash.Range): ts.Symbol[] {
return this.state.symbolsInScope(range);
}
public setTypesRegistry(map: ts.MapLike<void>): void {
this.state.setTypesRegistry(map);
}
}
export class GoTo {
constructor(private state: FourSlash.TestState) {
}
// Moves the caret to the specified marker,
// or the anonymous marker ('/**/') if no name
// is given
public marker(name?: string | FourSlash.Marker) {
this.state.goToMarker(name);
}
public eachMarker(markers: ReadonlyArray<string>, action: (marker: FourSlash.Marker, index: number) => void): void;
public eachMarker(action: (marker: FourSlash.Marker, index: number) => void): void;
public eachMarker(a: ReadonlyArray<string> | ((marker: FourSlash.Marker, index: number) => void), b?: (marker: FourSlash.Marker, index: number) => void): void {
const markers = typeof a === "function" ? this.state.getMarkers() : a.map(m => this.state.getMarkerByName(m));
this.state.goToEachMarker(markers, typeof a === "function" ? a : b);
}
public rangeStart(range: FourSlash.Range) {
this.state.goToRangeStart(range);
}
public eachRange(action: () => void) {
this.state.goToEachRange(action);
}
public bof() {
this.state.goToBOF();
}
public eof() {
this.state.goToEOF();
}
public implementation() {
this.state.goToImplementation();
}
public position(position: number, fileNameOrIndex?: string | number): void {
if (fileNameOrIndex !== undefined) {
this.file(fileNameOrIndex);
}
this.state.goToPosition(position);
}
// Opens a file, given either its index as it
// appears in the test source, or its filename
// as specified in the test metadata
public file(indexOrName: number | string, content?: string, scriptKindName?: string): void {
this.state.openFile(indexOrName, content, scriptKindName);
}
public select(startMarker: string, endMarker: string) {
this.state.select(startMarker, endMarker);
}
public selectRange(range: FourSlash.Range): void {
this.state.selectRange(range);
}
}
export class VerifyNegatable {
public not: VerifyNegatable;
public allowedClassElementKeywords = [
"public",
"private",
"protected",
"static",
"abstract",
"readonly",
"get",
"set",
"constructor",
"async"
];
public allowedConstructorParameterKeywords = [
"public",
"private",
"protected",
"readonly",
];
constructor(protected state: FourSlash.TestState, private negative = false) {
if (!negative) {
this.not = new VerifyNegatable(state, true);
}
}
public completionListCount(expectedCount: number) {
this.state.verifyCompletionListCount(expectedCount, this.negative);
}
// Verifies the completion list contains the specified symbol. The
// completion list is brought up if necessary
public completionListContains(entryId: string | ts.Completions.CompletionEntryIdentifier, text?: string, documentation?: string, kind?: string | { kind?: string, kindModifiers?: string }, spanIndex?: number, hasAction?: boolean, options?: VerifyCompletionListContainsOptions) {
if (typeof entryId === "string") {
entryId = { name: entryId, source: undefined };
}
if (this.negative) {
this.state.verifyCompletionListDoesNotContain(entryId, text, documentation, kind, spanIndex, options);
}
else {
this.state.verifyCompletionListContains(entryId, text, documentation, kind, spanIndex, hasAction, options);
}
}
// Verifies the completion list items count to be greater than the specified amount. The
// completion list is brought up if necessary
public completionListItemsCountIsGreaterThan(count: number) {
this.state.verifyCompletionListItemsCountIsGreaterThan(count, this.negative);
}
public assertHasRanges(ranges: FourSlash.Range[]) {
assert(ranges.length !== 0, "Array of ranges is expected to be non-empty");
}
public completionListIsEmpty() {
this.state.verifyCompletionListIsEmpty(this.negative);
}
public completionListContainsClassElementKeywords() {
for (const keyword of this.allowedClassElementKeywords) {
this.completionListContains(keyword, keyword, /*documentation*/ undefined, "keyword");
}
}
public completionListContainsConstructorParameterKeywords() {
for (const keyword of this.allowedConstructorParameterKeywords) {
this.completionListContains(keyword, keyword, /*documentation*/ undefined, "keyword");
}
}
public completionListIsGlobal(expected: boolean) {
this.state.verifyCompletionListIsGlobal(expected);
}
public completionListAllowsNewIdentifier() {
this.state.verifyCompletionListAllowsNewIdentifier(this.negative);
}
public signatureHelpPresent() {
this.state.verifySignatureHelpPresent(!this.negative);
}
public errorExistsBetweenMarkers(startMarker: string, endMarker: string) {
this.state.verifyErrorExistsBetweenMarkers(startMarker, endMarker, !this.negative);
}
public errorExistsAfterMarker(markerName = "") {
this.state.verifyErrorExistsAfterMarker(markerName, !this.negative, /*after*/ true);
}
public errorExistsBeforeMarker(markerName = "") {
this.state.verifyErrorExistsAfterMarker(markerName, !this.negative, /*after*/ false);
}
public quickInfoExists() {
this.state.verifyQuickInfoExists(this.negative);
}
public typeDefinitionCountIs(expectedCount: number) {
this.state.verifyTypeDefinitionsCount(this.negative, expectedCount);
}
public implementationListIsEmpty() {
this.state.verifyImplementationListIsEmpty(this.negative);
}
public isValidBraceCompletionAtPosition(openingBrace: string) {
this.state.verifyBraceCompletionAtPosition(this.negative, openingBrace);
}
public isInCommentAtPosition(onlyMultiLineDiverges?: boolean) {
this.state.verifySpanOfEnclosingComment(this.negative, onlyMultiLineDiverges);
}
public codeFix(options: FourSlashInterface.VerifyCodeFixOptions) {
this.state.verifyCodeFix(options);
}
public codeFixAvailable(options?: VerifyCodeFixAvailableOptions[]) {
this.state.verifyCodeFixAvailable(this.negative, options);
}
public applicableRefactorAvailableAtMarker(markerName: string) {
this.state.verifyApplicableRefactorAvailableAtMarker(this.negative, markerName);
}
public applicableRefactorAvailableForRange() {
this.state.verifyApplicableRefactorAvailableForRange(this.negative);
}
public refactor(options: VerifyRefactorOptions) {
this.state.verifyRefactor(options);
}
public refactorAvailable(name: string, actionName?: string) {
this.state.verifyRefactorAvailable(this.negative, name, actionName);
}
}
export class Verify extends VerifyNegatable {
constructor(state: FourSlash.TestState) {
super(state);
}
public completionsAt(markerName: string, completions: ReadonlyArray<ExpectedCompletionEntry>, options?: CompletionsAtOptions) {
this.state.verifyCompletionsAt(markerName, completions, options);
}
public quickInfoIs(expectedText: string, expectedDocumentation?: string) {
this.state.verifyQuickInfoString(expectedText, expectedDocumentation);
}
public quickInfoAt(markerName: string, expectedText?: string, expectedDocumentation?: string) {
this.state.verifyQuickInfoAt(markerName, expectedText, expectedDocumentation);
}
public quickInfos(namesAndTexts: { [name: string]: string }) {
this.state.verifyQuickInfos(namesAndTexts);
}
public caretAtMarker(markerName?: string) {
this.state.verifyCaretAtMarker(markerName);
}
public indentationIs(numberOfSpaces: number) {
this.state.verifyIndentationAtCurrentPosition(numberOfSpaces);
}
public indentationAtPositionIs(fileName: string, position: number, numberOfSpaces: number, indentStyle = ts.IndentStyle.Smart, baseIndentSize = 0) {
this.state.verifyIndentationAtPosition(fileName, position, numberOfSpaces, indentStyle, baseIndentSize);
}
public textAtCaretIs(text: string) {
this.state.verifyTextAtCaretIs(text);
}
/**
* Compiles the current file and evaluates 'expr' in a context containing
* the emitted output, then compares (using ===) the result of that expression
* to 'value'. Do not use this function with external modules as it is not supported.
*/
public eval(expr: string, value: any) {
this.state.verifyEval(expr, value);
}
public currentLineContentIs(text: string) {
this.state.verifyCurrentLineContent(text);
}
public currentFileContentIs(text: string) {
this.state.verifyCurrentFileContent(text);
}
public goToDefinitionIs(endMarkers: string | string[]) {
this.state.verifyGoToDefinitionIs(endMarkers);
}
public goToDefinition(startMarkerName: string | string[], endMarkerName: string | string[], range?: FourSlash.Range): void;
public goToDefinition(startsAndEnds: [string | string[], string | string[]][] | { [startMarkerName: string]: string | string[] }): void;
public goToDefinition(arg0: any, endMarkerName?: string | string[]) {
this.state.verifyGoToDefinition(arg0, endMarkerName);
}
public goToType(startMarkerName: string | string[], endMarkerName: string | string[]): void;
public goToType(startsAndEnds: [string | string[], string | string[]][] | { [startMarkerName: string]: string | string[] }): void;
public goToType(arg0: any, endMarkerName?: string | string[]) {
this.state.verifyGoToType(arg0, endMarkerName);
}
public goToDefinitionForMarkers(...markerNames: string[]) {
this.state.verifyGoToDefinitionForMarkers(markerNames);
}
public goToDefinitionName(name: string, containerName: string) {
this.state.verifyGoToDefinitionName(name, containerName);
}
public verifyGetEmitOutputForCurrentFile(expected: string): void {
this.state.verifyGetEmitOutputForCurrentFile(expected);
}
public verifyGetEmitOutputContentsForCurrentFile(expected: ts.OutputFile[]): void {
this.state.verifyGetEmitOutputContentsForCurrentFile(expected);
}
public symbolAtLocation(startRange: FourSlash.Range, ...declarationRanges: FourSlash.Range[]) {
this.state.verifySymbolAtLocation(startRange, declarationRanges);
}
public typeOfSymbolAtLocation(range: FourSlash.Range, symbol: ts.Symbol, expected: string) {
this.state.verifyTypeOfSymbolAtLocation(range, symbol, expected);
}
public referencesOf(start: FourSlash.Range, references: FourSlash.Range[]) {
this.state.verifyReferencesOf(start, references);
}
public referenceGroups(startRanges: FourSlash.Range[], parts: ReferenceGroup[]) {
this.state.verifyReferenceGroups(startRanges, parts);
}
public noReferences(markerNameOrRange?: string | FourSlash.Range) {
this.state.verifyNoReferences(markerNameOrRange);
}
public singleReferenceGroup(definition: ReferenceGroupDefinition, ranges?: FourSlash.Range[]) {
this.state.verifySingleReferenceGroup(definition, ranges);
}
public rangesReferenceEachOther(ranges?: FourSlash.Range[]) {
this.state.verifyRangesReferenceEachOther(ranges);
}
public findReferencesDefinitionDisplayPartsAtCaretAre(expected: ts.SymbolDisplayPart[]) {
this.state.verifyDisplayPartsOfReferencedSymbol(expected);
}
public currentParameterHelpArgumentNameIs(name: string) {
this.state.verifyCurrentParameterHelpName(name);
}
public currentParameterSpanIs(parameter: string) {
this.state.verifyCurrentParameterSpanIs(parameter);
}
public currentParameterHelpArgumentDocCommentIs(docComment: string) {
this.state.verifyCurrentParameterHelpDocComment(docComment);
}
public currentSignatureHelpDocCommentIs(docComment: string) {
this.state.verifyCurrentSignatureHelpDocComment(docComment);
}
public currentSignatureHelpTagsAre(tags: ts.JSDocTagInfo[]) {
this.state.verifyCurrentSignatureHelpTags(tags);
}
public signatureHelpCountIs(expected: number) {
this.state.verifySignatureHelpCount(expected);
}
public signatureHelpCurrentArgumentListIsVariadic(expected: boolean) {
this.state.verifyCurrentSignatureHelpIsVariadic(expected);
}
public signatureHelpArgumentCountIs(expected: number) {
this.state.verifySignatureHelpArgumentCount(expected);
}
public currentSignatureParameterCountIs(expected: number) {
this.state.verifyCurrentSignatureHelpParameterCount(expected);
}
public currentSignatureHelpIs(expected: string) {
this.state.verifyCurrentSignatureHelpIs(expected);
}
public noErrors() {
this.state.verifyNoErrors();
}
public numberOfErrorsInCurrentFile(expected: number) {
this.state.verifyNumberOfErrorsInCurrentFile(expected);
}
public baselineCurrentFileBreakpointLocations() {
this.state.baselineCurrentFileBreakpointLocations();
}
public baselineCurrentFileNameOrDottedNameSpans() {
this.state.baselineCurrentFileNameOrDottedNameSpans();
}
public baselineGetEmitOutput() {
this.state.baselineGetEmitOutput();
}
public baselineQuickInfo() {
this.state.baselineQuickInfo();
}
public nameOrDottedNameSpanTextIs(text: string) {
this.state.verifyCurrentNameOrDottedNameSpanText(text);
}
public outliningSpansInCurrentFile(spans: FourSlash.TextSpan[]) {
this.state.verifyOutliningSpans(spans);
}
public todoCommentsInCurrentFile(descriptors: string[]) {
this.state.verifyTodoComments(descriptors, this.state.getRanges());
}
public matchingBracePositionInCurrentFile(bracePosition: number, expectedMatchPosition: number) {
this.state.verifyMatchingBracePosition(bracePosition, expectedMatchPosition);
}
public noMatchingBracePositionInCurrentFile(bracePosition: number) {
this.state.verifyNoMatchingBracePosition(bracePosition);
}
public docCommentTemplateAt(marker: string | FourSlash.Marker, expectedOffset: number, expectedText: string) {
this.state.goToMarker(marker);
this.state.verifyDocCommentTemplate({ newText: expectedText.replace(/\r?\n/g, "\r\n"), caretOffset: expectedOffset });
}
public noDocCommentTemplateAt(marker: string | FourSlash.Marker) {
this.state.goToMarker(marker);
this.state.verifyDocCommentTemplate(/*expected*/ undefined);
}
public rangeAfterCodeFix(expectedText: string, includeWhiteSpace?: boolean, errorCode?: number, index?: number): void {
this.state.verifyRangeAfterCodeFix(expectedText, includeWhiteSpace, errorCode, index);
}
public codeFixAll(options: VerifyCodeFixAllOptions): void {
this.state.verifyCodeFixAll(options);
}
public fileAfterApplyingRefactorAtMarker(markerName: string, expectedContent: string, refactorNameToApply: string, actionName: string, formattingOptions?: ts.FormatCodeSettings): void {
this.state.verifyFileAfterApplyingRefactorAtMarker(markerName, expectedContent, refactorNameToApply, actionName, formattingOptions);
}
public rangeIs(expectedText: string, includeWhiteSpace?: boolean): void {
this.state.verifyRangeIs(expectedText, includeWhiteSpace);
}
public getAndApplyCodeFix(errorCode?: number, index?: number): void {
this.state.getAndApplyCodeActions(errorCode, index);
}
public applyCodeActionFromCompletion(markerName: string, options: VerifyCompletionActionOptions): void {
this.state.applyCodeActionFromCompletion(markerName, options);
}
public importFixAtPosition(expectedTextArray: string[], errorCode?: number): void {
this.state.verifyImportFixAtPosition(expectedTextArray, errorCode);
}
public navigationBar(json: any, options?: { checkSpans?: boolean }) {
this.state.verifyNavigationBar(json, options);
}
public navigationTree(json: any, options?: { checkSpans?: boolean }) {
this.state.verifyNavigationTree(json, options);
}
public navigationItemsListCount(count: number, searchValue: string, matchKind?: string, fileName?: string) {
this.state.verifyNavigationItemsCount(count, searchValue, matchKind, fileName);
}
public navigationItemsListContains(
name: string,
kind: string,
searchValue: string,
matchKind: string,
fileName?: string,
parentName?: string) {
this.state.verifyNavigationItemsListContains(
name,
kind,
searchValue,
matchKind,
fileName,
parentName);
}
public occurrencesAtPositionContains(range: FourSlash.Range, isWriteAccess?: boolean) {
this.state.verifyOccurrencesAtPositionListContains(range.fileName, range.start, range.end, isWriteAccess);
}
public occurrencesAtPositionCount(expectedCount: number) {
this.state.verifyOccurrencesAtPositionListCount(expectedCount);
}
public rangesAreOccurrences(isWriteAccess?: boolean) {
this.state.verifyRangesAreOccurrences(isWriteAccess);
}
public rangesWithSameTextAreRenameLocations() {
this.state.verifyRangesWithSameTextAreRenameLocations();
}
public rangesAreRenameLocations(options?: FourSlash.Range[] | { findInStrings?: boolean, findInComments?: boolean, ranges?: FourSlash.Range[] }) {
this.state.verifyRangesAreRenameLocations(options);
}
public rangesAreDocumentHighlights(ranges?: FourSlash.Range[]) {
this.state.verifyRangesAreDocumentHighlights(ranges);
}
public rangesWithSameTextAreDocumentHighlights() {
this.state.verifyRangesWithSameTextAreDocumentHighlights();
}
public documentHighlightsOf(startRange: FourSlash.Range, ranges: FourSlash.Range[]) {
this.state.verifyDocumentHighlightsOf(startRange, ranges);
}
public completionEntryDetailIs(entryName: string, text: string, documentation?: string, kind?: string, tags?: ts.JSDocTagInfo[]) {
this.state.verifyCompletionEntryDetails(entryName, text, documentation, kind, tags);
}
/**
* This method *requires* a contiguous, complete, and ordered stream of classifications for a file.
*/
public syntacticClassificationsAre(...classifications: { classificationType: string; text: string }[]) {
this.state.verifySyntacticClassifications(classifications);
}
/**
* This method *requires* an ordered stream of classifications for a file, and spans are highly recommended.
*/
public semanticClassificationsAre(...classifications: Classification[]) {
this.state.verifySemanticClassifications(classifications);
}
public renameInfoSucceeded(displayName?: string, fullDisplayName?: string, kind?: string, kindModifiers?: string) {
this.state.verifyRenameInfoSucceeded(displayName, fullDisplayName, kind, kindModifiers);
}
public renameInfoFailed(message?: string) {
this.state.verifyRenameInfoFailed(message);
}
public renameLocations(startRanges: FourSlash.Range | FourSlash.Range[], options: FourSlash.Range[] | { findInStrings?: boolean, findInComments?: boolean, ranges: FourSlash.Range[] }) {
this.state.verifyRenameLocations(startRanges, options);
}
public verifyQuickInfoDisplayParts(kind: string, kindModifiers: string, textSpan: { start: number; length: number; },
displayParts: ts.SymbolDisplayPart[], documentation: ts.SymbolDisplayPart[], tags: ts.JSDocTagInfo[]) {
this.state.verifyQuickInfoDisplayParts(kind, kindModifiers, textSpan, displayParts, documentation, tags);
}
public getSyntacticDiagnostics(expected: string) {
this.state.getSyntacticDiagnostics(expected);
}
public getSemanticDiagnostics(expected: string) {
this.state.getSemanticDiagnostics(expected);
}
public ProjectInfo(expected: string[]) {
this.state.verifyProjectInfo(expected);
}
public allRangesAppearInImplementationList(markerName: string) {
this.state.verifyRangesInImplementationList(markerName);
}
}
export class Edit {
constructor(private state: FourSlash.TestState) {
}
public backspace(count?: number) {
this.state.deleteCharBehindMarker(count);
}
public deleteAtCaret(times?: number) {
this.state.deleteChar(times);
}
public replace(start: number, length: number, text: string) {
this.state.replace(start, length, text);
}
public paste(text: string) {
this.state.paste(text);
}
public insert(text: string) {
this.insertLines(text);
}
public insertLine(text: string) {
this.insertLines(text + "\n");
}
public insertLines(...lines: string[]) {
this.state.type(lines.join("\n"));
}
public moveRight(count?: number) {
this.state.moveCaretRight(count);
}
public moveLeft(count?: number) {
if (typeof count === "undefined") {
count = 1;
}
this.state.moveCaretRight(count * -1);
}
public enableFormatting() {
this.state.enableFormatting = true;
}
public disableFormatting() {
this.state.enableFormatting = false;
}
public applyRefactor(options: ApplyRefactorOptions) {
this.state.applyRefactor(options);
}
}
export class Debug {
constructor(private state: FourSlash.TestState) {
}
public printCurrentParameterHelp() {
this.state.printCurrentParameterHelp();
}
public printCurrentFileState() {
this.state.printCurrentFileState(/*showWhitespace*/ false, /*makeCaretVisible*/ true);
}
public printCurrentFileStateWithWhitespace() {
this.state.printCurrentFileState(/*showWhitespace*/ true, /*makeCaretVisible*/ true);
}
public printCurrentFileStateWithoutCaret() {
this.state.printCurrentFileState(/*showWhitespace*/ false, /*makeCaretVisible*/ false);
}
public printCurrentQuickInfo() {
this.state.printCurrentQuickInfo();
}
public printCurrentSignatureHelp() {
this.state.printCurrentSignatureHelp();
}
public printCompletionListMembers(options: ts.GetCompletionsAtPositionOptions | undefined) {
this.state.printCompletionListMembers(options);
}
public printAvailableCodeFixes() {
this.state.printAvailableCodeFixes();
}
public printBreakpointLocation(pos: number) {
this.state.printBreakpointLocation(pos);
}
public printBreakpointAtCurrentLocation() {
this.state.printBreakpointAtCurrentLocation();
}
public printNameOrDottedNameSpans(pos: number) {
this.state.printNameOrDottedNameSpans(pos);
}
public printErrorList() {
this.state.printErrorList();
}
public printNavigationItems(searchValue = ".*") {
this.state.printNavigationItems(searchValue);
}
public printNavigationBar() {
this.state.printNavigationBar();
}
public printContext() {
this.state.printContext();
}
}
export class Format {
constructor(private state: FourSlash.TestState) {
}
public document() {
this.state.formatDocument();
}
public copyFormatOptions(): ts.FormatCodeSettings {
return this.state.copyFormatOptions();
}
public setFormatOptions(options: ts.FormatCodeOptions) {
return this.state.setFormatOptions(options);
}
public selection(startMarker: string, endMarker: string) {
this.state.formatSelection(this.state.getMarkerByName(startMarker).position, this.state.getMarkerByName(endMarker).position);
}
public onType(posMarker: string, key: string) {
this.state.formatOnType(this.state.getMarkerByName(posMarker).position, key);
}
public setOption(name: keyof ts.FormatCodeSettings, value: number | string | boolean): void {
this.state.formatCodeSettings[name] = value;
}
}
export class Cancellation {
constructor(private state: FourSlash.TestState) {
}
public resetCancelled() {
this.state.resetCancelled();
}
public setCancelled(numberOfCalls = 0) {
this.state.setCancelled(numberOfCalls);
}
}
interface Classification {
classificationType: ts.ClassificationTypeNames;
text: string;
textSpan?: FourSlash.TextSpan;
}
export namespace Classification {
export function comment(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.comment, text, position);
}
export function identifier(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.identifier, text, position);
}
export function keyword(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.keyword, text, position);
}
export function numericLiteral(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.numericLiteral, text, position);
}
export function operator(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.operator, text, position);
}
export function stringLiteral(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.stringLiteral, text, position);
}
export function whiteSpace(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.whiteSpace, text, position);
}
export function text(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.text, text, position);
}
export function punctuation(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.punctuation, text, position);
}
export function docCommentTagName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.docCommentTagName, text, position);
}
export function className(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.className, text, position);
}
export function enumName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.enumName, text, position);
}
export function interfaceName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.interfaceName, text, position);
}
export function moduleName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.moduleName, text, position);
}
export function typeParameterName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.typeParameterName, text, position);
}
export function parameterName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.parameterName, text, position);
}
export function typeAliasName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.typeAliasName, text, position);
}
export function jsxOpenTagName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxOpenTagName, text, position);
}
export function jsxCloseTagName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxCloseTagName, text, position);
}
export function jsxSelfClosingTagName(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxSelfClosingTagName, text, position);
}
export function jsxAttribute(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxAttribute, text, position);
}
export function jsxText(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxText, text, position);
}
export function jsxAttributeStringLiteralValue(text: string, position?: number): Classification {
return getClassification(ts.ClassificationTypeNames.jsxAttributeStringLiteralValue, text, position);
}
function getClassification(classificationType: ts.ClassificationTypeNames, text: string, position?: number): Classification {
const textSpan = position === undefined ? undefined : { start: position, end: position + text.length };
return { classificationType, text, textSpan };
}
}
export interface ReferenceGroup {
definition: ReferenceGroupDefinition;
ranges: FourSlash.Range[];
}
export type ReferenceGroupDefinition = string | { text: string, range: FourSlash.Range };
export interface ApplyRefactorOptions {
refactorName: string;
actionName: string;
actionDescription: string;
newContent: string;
}
export type ExpectedCompletionEntry = string | { name: string, insertText?: string, replacementSpan?: FourSlash.Range };
export interface CompletionsAtOptions extends ts.GetCompletionsAtPositionOptions {
isNewIdentifierLocation?: boolean;
}
export interface VerifyCompletionListContainsOptions extends ts.GetCompletionsAtPositionOptions {
sourceDisplay: string;
isRecommended?: true;
insertText?: string;
replacementSpan?: FourSlash.Range;
}
export interface NewContentOptions {
// Exactly one of these should be defined.
newFileContent?: string;
newRangeContent?: string;
}
export interface VerifyCodeFixOptions extends NewContentOptions {
description: string;
errorCode?: number;
index?: number;
}
export interface VerifyCodeFixAvailableOptions {
description: string;
commands?: ts.CodeActionCommand[];
}
export interface VerifyCodeFixAllOptions {
fixId: string;
newFileContent: string;
commands: ReadonlyArray<{}>;
}
export interface VerifyRefactorOptions {
name: string;
actionName: string;
refactors: ts.ApplicableRefactorInfo[];
}
export interface VerifyCompletionActionOptions extends NewContentOptions {
name: string;
source?: string;
description: string;
}
}
