read.jl
# This file is a part of Julia. License is MIT: http://julialang.org/license
mktempdir() do dir
tasks = []
# Create test file
filename = joinpath(dir, "file.txt")
text = "C1,C2\n1,2\na,b\n"
# List of IO producers
l = Vector{Tuple{AbstractString,Function}}()
# File
io = (text) -> begin
write(filename, text)
Base.Filesystem.open(filename, Base.Filesystem.JL_O_RDONLY)
end
s = io(text)
@test isa(s, IO)
@test isa(s, Base.Filesystem.File)
close(s)
push!(l, ("File", io))
# IOStream
io = (text) -> begin
write(filename, text)
open(filename)
end
s = io(text)
@test isa(s, IO)
@test isa(s, IOStream)
close(s)
push!(l, ("IOStream", io))
# IOBuffer
io = (text)->IOBuffer(text)
s = io(text)
@test isa(s, IO)
@test isa(s, IOBuffer)
close(s)
push!(l, ("IOBuffer", io))
function run_test_server(srv, text)
push!(tasks, @async begin
try
sock = accept(srv)
try
write(sock,text)
catch e
if typeof(e) != Base.UVError
rethrow(e)
end
finally
close(sock)
end
finally
close(srv)
end
end)
yield()
end
# TCPSocket
io = (text) -> begin
port, srv = listenany(rand(2000:4000))
run_test_server(srv, text)
connect(port)
end
s = io(text)
@test isa(s, IO)
@test isa(s, TCPSocket)
close(s)
push!(l, ("TCPSocket", io))
# PipeEndpoint
io = (text) -> begin
a = "\\\\.\\pipe\\uv-test-$(randstring(6))"
b = joinpath(dir, "socket-$(randstring(6))")
socketname = is_windows() ? a : b
srv = listen(socketname)
run_test_server(srv, text)
connect(socketname)
end
s = io(text)
@test isa(s, IO)
@test isa(s, Base.PipeEndpoint)
close(s)
push!(l, ("PipeEndpoint", io))
#FIXME See https://github.com/JuliaLang/julia/issues/14747
# Reading from open(::Command) seems to deadlock on Linux/Travis
#=
if !is_windows()
# Windows type command not working?
# See "could not spawn `type 'C:\Users\appveyor\AppData\Local\Temp\1\jul3516.tmp\file.txt'`"
#https://ci.appveyor.com/project/StefanKarpinski/julia/build/1.0.12733/job/hpwjs4hmf03vs5ag#L1244
# Pipe
io = (text) -> begin
write(filename, text)
open(`$(is_windows() ? "type" : "cat") $filename`)[1]
# Was open(`echo -n $text`)[1]
# See https://github.com/JuliaLang/julia/issues/14747
end
s = io(text)
@test isa(s, IO)
@test isa(s, Pipe)
close(s)
push!(l, ("Pipe", io))
end
=#
open_streams = []
function cleanup()
for s in open_streams
try close(s) end
end
empty!(open_streams)
for tsk in tasks
wait(tsk)
end
empty!(tasks)
end
verbose = false
for (name, f) in l
io = ()->(s=f(text); push!(open_streams, s); s)
write(filename, text)
verbose && println("$name read...")
@test read(io(), UInt8) == read(IOBuffer(text), UInt8)
@test read(io(), UInt8) == read(filename, UInt8)
@test read(io(), Int) == read(IOBuffer(text), Int)
@test read(io(), Int) == read(filename,Int)
s1 = io()
s2 = IOBuffer(text)
@test read(s1, UInt32, 2) == read(s2, UInt32, 2)
@test !eof(s1)
@test read(s1, UInt8, 5) == read(s2, UInt8, 5)
@test !eof(s1)
@test read(s1, UInt8, 1) == read(s2, UInt8, 1)
@test eof(s1)
@test_throws EOFError read(s1, UInt8)
@test eof(s1)
close(s1)
close(s2)
verbose && println("$name eof...")
n = length(text) - 1
@test read!(io(), Vector{UInt8}(n)) ==
read!(IOBuffer(text), Vector{UInt8}(n))
@test (s = io(); read!(s, Vector{UInt8}(n)); !eof(s))
n = length(text)
@test read!(io(), Vector{UInt8}(n)) ==
read!(IOBuffer(text), Vector{UInt8}(n))
@test (s = io(); read!(s, Vector{UInt8}(n)); eof(s))
n = length(text) + 1
@test_throws EOFError read!(io(), Vector{UInt8}(n))
@test_throws EOFError read!(io(), Vector{UInt8}(n))
old_text = text
cleanup()
for text in [
old_text,
String(Char['A' + i % 52 for i in 1:(div(Base.SZ_UNBUFFERED_IO,2))]),
String(Char['A' + i % 52 for i in 1:( Base.SZ_UNBUFFERED_IO -1)]),
String(Char['A' + i % 52 for i in 1:( Base.SZ_UNBUFFERED_IO )]),
String(Char['A' + i % 52 for i in 1:( Base.SZ_UNBUFFERED_IO +1)])
]
write(filename, text)
verbose && println("$name readstring...")
@test readstring(io()) == text
@test readstring(io()) == readstring(filename)
verbose && println("$name read...")
@test read(io()) == Vector{UInt8}(text)
@test read(io()) == read(filename)
cleanup()
verbose && println("$name readbytes!...")
l = length(text)
for n = [1, 2, l-2, l-1, l, l+1, l+2]
a1 = Vector{UInt8}(n)
a2 = Vector{UInt8}(n)
s1 = io()
s2 = IOBuffer(text)
n1 = readbytes!(s1, a1)
n2 = readbytes!(s2, a2)
@test n1 == n2
@test length(a1) == length(a2)
@test a1[1:n1] == a2[1:n2]
@test n <= length(text) || eof(s1)
@test n <= length(text) || eof(s2)
cleanup()
end
verbose && println("$name read!...")
l = length(text)
for n = [1, 2, l-2, l-1, l]
@test read!(io(), Vector{UInt8}(n)) ==
read!(IOBuffer(text), Vector{UInt8}(n))
@test read!(io(), Vector{UInt8}(n)) ==
read!(filename, Vector{UInt8}(n))
cleanup()
end
@test_throws EOFError read!(io(), Vector{UInt8}(length(text)+1))
verbose && println("$name readuntil...")
@test readuntil(io(), '\n') == readuntil(IOBuffer(text),'\n')
@test readuntil(io(), '\n') == readuntil(filename,'\n')
@test readuntil(io(), "\n") == readuntil(IOBuffer(text),"\n")
@test readuntil(io(), "\n") == readuntil(filename,"\n")
@test readuntil(io(), ',') == readuntil(IOBuffer(text),',')
@test readuntil(io(), ',') == readuntil(filename,',')
cleanup()
verbose && println("$name readline...")
@test readline(io(), chomp=false) == readline(IOBuffer(text), chomp=false)
@test readline(io(), chomp=false) == readline(filename, chomp=false)
verbose && println("$name readlines...")
@test readlines(io(), chomp=false) == readlines(IOBuffer(text), chomp=false)
@test readlines(io(), chomp=false) == readlines(filename, chomp=false)
@test readlines(io()) == readlines(IOBuffer(text))
@test readlines(io()) == readlines(filename)
@test collect(eachline(io(), chomp=false)) == collect(eachline(IOBuffer(text), chomp=false))
@test collect(eachline(io(), chomp=false)) == collect(eachline(filename, chomp=false))
@test collect(eachline(io())) == collect(eachline(IOBuffer(text)))
@test collect(@inferred(eachline(io()))) == collect(@inferred(eachline(filename))) #20351
cleanup()
verbose && println("$name countlines...")
@test countlines(io()) == countlines(IOBuffer(text))
verbose && println("$name readcsv...")
@test readcsv(io()) == readcsv(IOBuffer(text))
@test readcsv(io()) == readcsv(filename)
cleanup()
end
text = old_text
write(filename, text)
if !(typeof(io()) in [Base.PipeEndpoint, Pipe, TCPSocket])
verbose && println("$name position...")
@test (s = io(); read!(s, Vector{UInt8}(4)); position(s)) == 4
verbose && println("$name seek...")
for n = 0:length(text)-1
@test readlines(seek(io(), n)) == readlines(seek(IOBuffer(text), n))
cleanup()
end
verbose && println("$name skip...")
for n = 0:length(text)-1
@test readlines(seek(io(), n)) == readlines(seek(IOBuffer(text), n))
@test readlines(skip(io(), n)) == readlines(skip(IOBuffer(text), n))
cleanup()
end
verbose && println("$name seekend...")
@test readstring(seekend(io())) == ""
end
verbose && println("$name write(::IOStream, ...)")
to = open("$filename.to", "w")
write(to, io())
close(to)
@test readstring("$filename.to") == text
verbose && println("$name write(filename, ...)")
write("$filename.to", io())
@test readstring("$filename.to") == text
verbose && println("$name write(::IOBuffer, ...)")
to = IOBuffer(copy(Vector{UInt8}(text)), false, true)
write(to, io())
@test String(take!(to)) == text
cleanup()
end
function test_read_nbyte()
fn = tempname()
# Write one byte. One byte read should work once
# but 2-byte read should throw EOFError.
f = open(fn, "w+") do f
write(f, 0x55)
flush(f)
seek(f, 0)
@test read(f, UInt8) == 0x55
@test_throws EOFError read(f, UInt8)
seek(f, 0)
@test_throws EOFError read(f, UInt16)
end
# Write 2 more bytes. Now 2-byte read should work once
# but 4-byte read should fail with EOFError.
open(fn, "a+") do f
write(f, 0x4444)
flush(f)
seek(f, 0)
@test read(f, UInt16) == 0x4455
@test_throws EOFError read(f, UInt16)
seek(f, 0)
@test_throws EOFError read(f, UInt32)
end
# Write 4 more bytes. Now 4-byte read should work once
# but 8-byte read should fail with EOFError.
open(fn, "a+") do f
write(f, 0x33333333)
flush(f)
seek(f, 0)
@test read(f, UInt32) == 0x33444455
@test_throws EOFError read(f, UInt32)
seek(f, 0)
@test_throws EOFError read(f, UInt64)
end
# Writing one more byte should allow an 8-byte
# read to proceed.
open(fn, "a+") do f
write(f, 0x22)
flush(f)
seek(f, 0)
@test read(f, UInt64) == 0x2233333333444455
end
rm(fn)
end
test_read_nbyte()
# DevNull
@test !isreadable(DevNull)
@test iswritable(DevNull)
@test isopen(DevNull)
@test write(DevNull, 0xff) === 1
@test write(DevNull, Int32(1234)) === 4
@test_throws EOFError read(DevNull, UInt8)
@test close(DevNull) === nothing
@test flush(DevNull) === nothing
@test eof(DevNull)
@test print(DevNull, "go to /dev/null") === nothing
let s = "qwerty"
@test read(IOBuffer(s)) == Vector{UInt8}(s)
@test read(IOBuffer(s), 10) == Vector{UInt8}(s)
@test read(IOBuffer(s), 1) == Vector{UInt8}(s)[1:1]
# Test growing output array
x = UInt8[]
n = readbytes!(IOBuffer(s), x, 10)
@test x == Vector{UInt8}(s)
@test n == length(x)
end
# Filesystem.File
f = joinpath(dir, "test.txt")
open(io->write(io, "123"), f, "w")
f1 = open(f)
f2 = Base.Filesystem.open(f, Base.Filesystem.JL_O_RDONLY)
@test read(f1, UInt8) == read(f2, UInt8) == UInt8('1')
@test read(f1, UInt8) == read(f2, UInt8) == UInt8('2')
@test read(f1, UInt8) == read(f2, UInt8) == UInt8('3')
@test_throws EOFError read(f1, UInt8)
@test_throws EOFError read(f2, UInt8)
close(f1)
close(f2)
a = UInt8[0,0,0]
f1 = open(f)
f2 = Base.Filesystem.open(f, Base.Filesystem.JL_O_RDONLY)
@test read!(f1, a) == read!(f2, a) == UInt8['1','2','3']
@test_throws EOFError read!(f1, a)
@test_throws EOFError read!(f2, a)
close(f1)
close(f2)
a = UInt8[0,0,0,0]
f1 = open(f)
f2 = Base.Filesystem.open(f, Base.Filesystem.JL_O_RDONLY)
@test_throws EOFError read!(f1, a)
@test_throws EOFError read!(f2, a)
close(f1)
close(f2)
rm(f)
io = Base.Filesystem.open(f, Base.Filesystem.JL_O_WRONLY | Base.Filesystem.JL_O_CREAT | Base.Filesystem.JL_O_EXCL, 0o000)
@test write(io, "abc") == 3
close(io)
if !is_windows() && get(ENV, "USER", "") != "root" && get(ENV, "HOME", "") != "/root"
# msvcrt _wchmod documentation states that all files are readable,
# so we don't test that it correctly set the umask on windows
@test_throws SystemError open(f)
@test_throws Base.UVError Base.Filesystem.open(f, Base.Filesystem.JL_O_RDONLY)
else
is_windows() || warn("file permissions tests skipped due to running tests as root (not recommended)")
close(open(f))
end
chmod(f, 0o400)
f1 = open(f)
f2 = Base.Filesystem.open(f, Base.Filesystem.JL_O_RDONLY)
for i = 1:2
@test !eof(f1)
@test !eof(f2)
@test position(f1) == 0
@test position(f2) == 0
@test readstring(f1) == readstring(f2) == "abc"
@test readstring(f1) == readstring(f2) == ""
@test position(f1) == 3
@test position(f2) == 3
@test eof(f1)
@test eof(f2)
@test seekstart(f1) == f1
@test seekstart(f2) == f2
end
@test seekend(f1) == f1
@test seekend(f2) == f2
@test eof(f1)
@test eof(f2)
@test skip(f1, -2) == f1
@test skip(f2, -2) == f2
@test position(f1) == 1
@test position(f2) == 1
@test_throws SystemError skip(f1, -2)
@test_throws SystemError skip(f2, -2)
@test position(f1) == 1
@test position(f2) == 1
@test skip(f1, 300) == f1
@test skip(f2, 300) == f2
@test position(f1) == 301
@test position(f2) == 301
@test eof(f1)
@test eof(f2)
@test_throws ArgumentError write(f1, '*')
@test_throws Base.UVError write(f2, '*')
close(f1)
close(f2)
@test eof(f1)
@test_throws Base.UVError eof(f2)
if get(ENV, "USER", "") != "root" && get(ENV, "HOME", "") != "/root"
@test_throws SystemError open(f, "r+")
@test_throws Base.UVError Base.Filesystem.open(f, Base.Filesystem.JL_O_RDWR)
else
warn("file permissions tests skipped due to running tests as root (not recommended)")
end
chmod(f, 0o600)
f1 = open(f, "r+")
f2 = Base.Filesystem.open(f, Base.Filesystem.JL_O_RDWR)
@test skip(f1, 10) == f1
@test skip(f2, 10) == f2
@test eof(f1)
@test eof(f2)
@test write(f1, '*') == 1
@test flush(f1) === nothing
@test !eof(f2)
@test skip(f2, 1) == f2
@test write(f2, '*') == 1
@test !eof(f1)
@test seekstart(f1) == f1
@test seekstart(f2) == f2
@test readstring(f1) == readstring(f2) == "abc\0\0\0\0\0\0\0**"
close(f1)
close(f2)
rm(f)
end # mktempdir() do dir