https://github.com/web-platform-tests/wpt
Tip revision: 9b6e516d529b526e06447d171dc2937f646bbe89 authored by Bear Travis on 11 July 2014, 21:52:43 UTC
Adding basic tests for the CSS.supports API as part of the CSS Conditional Rules Module L3.
Adding basic tests for the CSS.supports API as part of the CSS Conditional Rules Module L3.
Tip revision: 9b6e516
support-promises.js
'use strict';
// Returns an IndexedDB database name that is unique to the test case.
function databaseName(testCase) {
return 'db' + self.location.pathname + '-' + testCase.name;
}
// Creates an EventWatcher covering all the events that can be issued by
// IndexedDB requests and transactions.
function requestWatcher(testCase, request) {
return new EventWatcher(testCase, request,
['abort', 'blocked', 'complete', 'error', 'success', 'upgradeneeded']);
}
// Migrates an IndexedDB database whose name is unique for the test case.
//
// newVersion must be greater than the database's current version.
//
// migrationCallback will be called during a versionchange transaction and will
// given the created database, the versionchange transaction, and the database
// open request.
//
// Returns a promise. If the versionchange transaction goes through, the promise
// resolves to an IndexedDB database that should be closed by the caller. If the
// versionchange transaction is aborted, the promise resolves to an error.
function migrateDatabase(testCase, newVersion, migrationCallback) {
return migrateNamedDatabase(
testCase, databaseName(testCase), newVersion, migrationCallback);
}
// Migrates an IndexedDB database.
//
// newVersion must be greater than the database's current version.
//
// migrationCallback will be called during a versionchange transaction and will
// given the created database, the versionchange transaction, and the database
// open request.
//
// Returns a promise. If the versionchange transaction goes through, the promise
// resolves to an IndexedDB database that should be closed by the caller. If the
// versionchange transaction is aborted, the promise resolves to an error.
function migrateNamedDatabase(
testCase, databaseName, newVersion, migrationCallback) {
// We cannot use eventWatcher.wait_for('upgradeneeded') here, because
// the versionchange transaction auto-commits before the Promise's then
// callback gets called.
return new Promise((resolve, reject) => {
const request = indexedDB.open(databaseName, newVersion);
request.onupgradeneeded = testCase.step_func(event => {
const database = event.target.result;
const transaction = event.target.transaction;
let shouldBeAborted = false;
let requestEventPromise = null;
// We wrap IDBTransaction.abort so we can set up the correct event
// listeners and expectations if the test chooses to abort the
// versionchange transaction.
const transactionAbort = transaction.abort.bind(transaction);
transaction.abort = () => {
transaction._willBeAborted();
transactionAbort();
}
transaction._willBeAborted = () => {
requestEventPromise = new Promise((resolve, reject) => {
request.onerror = event => {
event.preventDefault();
resolve(event);
};
request.onsuccess = () => reject(new Error(
'indexedDB.open should not succeed for an aborted ' +
'versionchange transaction'));
});
shouldBeAborted = true;
}
// If migration callback returns a promise, we'll wait for it to resolve.
// This simplifies some tests.
const callbackResult = migrationCallback(database, transaction, request);
if (!shouldBeAborted) {
request.onerror = null;
request.onsuccess = null;
requestEventPromise =
requestWatcher(testCase, request).wait_for('success');
}
// requestEventPromise needs to be the last promise in the chain, because
// we want the event that it resolves to.
resolve(Promise.resolve(callbackResult).then(() => requestEventPromise));
});
request.onerror = event => reject(event.target.error);
request.onsuccess = () => {
const database = request.result;
testCase.add_cleanup(() => { database.close(); });
reject(new Error(
'indexedDB.open should not succeed without creating a ' +
'versionchange transaction'));
};
}).then(event => {
const database = event.target.result;
if (database) {
testCase.add_cleanup(() => { database.close(); });
}
return database || event.target.error;
});
}
// Creates an IndexedDB database whose name is unique for the test case.
//
// setupCallback will be called during a versionchange transaction, and will be
// given the created database, the versionchange transaction, and the database
// open request.
//
// Returns a promise that resolves to an IndexedDB database. The caller should
// close the database.
function createDatabase(testCase, setupCallback) {
return createNamedDatabase(testCase, databaseName(testCase), setupCallback);
}
// Creates an IndexedDB database.
//
// setupCallback will be called during a versionchange transaction, and will be
// given the created database, the versionchange transaction, and the database
// open request.
//
// Returns a promise that resolves to an IndexedDB database. The caller should
// close the database.
function createNamedDatabase(testCase, databaseName, setupCallback) {
const request = indexedDB.deleteDatabase(databaseName);
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(event => {
testCase.add_cleanup(() => { indexedDB.deleteDatabase(databaseName); });
return migrateNamedDatabase(testCase, databaseName, 1, setupCallback)
});
}
// Opens an IndexedDB database without performing schema changes.
//
// The given version number must match the database's current version.
//
// Returns a promise that resolves to an IndexedDB database. The caller should
// close the database.
function openDatabase(testCase, version) {
return openNamedDatabase(testCase, databaseName(testCase), version);
}
// Opens an IndexedDB database without performing schema changes.
//
// The given version number must match the database's current version.
//
// Returns a promise that resolves to an IndexedDB database. The caller should
// close the database.
function openNamedDatabase(testCase, databaseName, version) {
const request = indexedDB.open(databaseName, version);
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(() => {
const database = request.result;
testCase.add_cleanup(() => { database.close(); });
return database;
});
}
// The data in the 'books' object store records in the first example of the
// IndexedDB specification.
const BOOKS_RECORD_DATA = [
{ title: 'Quarry Memories', author: 'Fred', isbn: 123456 },
{ title: 'Water Buffaloes', author: 'Fred', isbn: 234567 },
{ title: 'Bedrock Nights', author: 'Barney', isbn: 345678 },
];
// Creates a 'books' object store whose contents closely resembles the first
// example in the IndexedDB specification.
const createBooksStore = (testCase, database) => {
const store = database.createObjectStore('books',
{ keyPath: 'isbn', autoIncrement: true });
store.createIndex('by_author', 'author');
store.createIndex('by_title', 'title', { unique: true });
for (let record of BOOKS_RECORD_DATA)
store.put(record);
return store;
}
// Creates a 'not_books' object store used to test renaming into existing or
// deleted store names.
function createNotBooksStore(testCase, database) {
const store = database.createObjectStore('not_books');
store.createIndex('not_by_author', 'author');
store.createIndex('not_by_title', 'title', { unique: true });
return store;
}
// Verifies that an object store's indexes match the indexes used to create the
// books store in the test database's version 1.
//
// The errorMessage is used if the assertions fail. It can state that the
// IndexedDB implementation being tested is incorrect, or that the testing code
// is using it incorrectly.
function checkStoreIndexes (testCase, store, errorMessage) {
assert_array_equals(
store.indexNames, ['by_author', 'by_title'], errorMessage);
const authorIndex = store.index('by_author');
const titleIndex = store.index('by_title');
return Promise.all([
checkAuthorIndexContents(testCase, authorIndex, errorMessage),
checkTitleIndexContents(testCase, titleIndex, errorMessage),
]);
}
// Verifies that an object store's key generator is in the same state as the
// key generator created for the books store in the test database's version 1.
//
// The errorMessage is used if the assertions fail. It can state that the
// IndexedDB implementation being tested is incorrect, or that the testing code
// is using it incorrectly.
function checkStoreGenerator(testCase, store, expectedKey, errorMessage) {
const request = store.put(
{ title: 'Bedrock Nights ' + expectedKey, author: 'Barney' });
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(() => {
const result = request.result;
assert_equals(result, expectedKey, errorMessage);
});
}
// Verifies that an object store's contents matches the contents used to create
// the books store in the test database's version 1.
//
// The errorMessage is used if the assertions fail. It can state that the
// IndexedDB implementation being tested is incorrect, or that the testing code
// is using it incorrectly.
function checkStoreContents(testCase, store, errorMessage) {
const request = store.get(123456);
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(() => {
const result = request.result;
assert_equals(result.isbn, BOOKS_RECORD_DATA[0].isbn, errorMessage);
assert_equals(result.author, BOOKS_RECORD_DATA[0].author, errorMessage);
assert_equals(result.title, BOOKS_RECORD_DATA[0].title, errorMessage);
});
}
// Verifies that index matches the 'by_author' index used to create the
// by_author books store in the test database's version 1.
//
// The errorMessage is used if the assertions fail. It can state that the
// IndexedDB implementation being tested is incorrect, or that the testing code
// is using it incorrectly.
function checkAuthorIndexContents(testCase, index, errorMessage) {
const request = index.get(BOOKS_RECORD_DATA[2].author);
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(() => {
const result = request.result;
assert_equals(result.isbn, BOOKS_RECORD_DATA[2].isbn, errorMessage);
assert_equals(result.title, BOOKS_RECORD_DATA[2].title, errorMessage);
});
}
// Verifies that an index matches the 'by_title' index used to create the books
// store in the test database's version 1.
//
// The errorMessage is used if the assertions fail. It can state that the
// IndexedDB implementation being tested is incorrect, or that the testing code
// is using it incorrectly.
function checkTitleIndexContents(testCase, index, errorMessage) {
const request = index.get(BOOKS_RECORD_DATA[2].title);
const eventWatcher = requestWatcher(testCase, request);
return eventWatcher.wait_for('success').then(() => {
const result = request.result;
assert_equals(result.isbn, BOOKS_RECORD_DATA[2].isbn, errorMessage);
assert_equals(result.author, BOOKS_RECORD_DATA[2].author, errorMessage);
});
}