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109 lines
3 KiB
Ruby
109 lines
3 KiB
Ruby
# encoding: utf-8
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require_relative '../fixtures/classes'
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describe :io_write, shared: true do
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before :each do
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@filename = tmp("IO_syswrite_file") + $$.to_s
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File.open(@filename, "w") do |file|
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file.send(@method, "012345678901234567890123456789")
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end
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@file = File.open(@filename, "r+")
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@readonly_file = File.open(@filename)
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end
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after :each do
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@readonly_file.close if @readonly_file
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@file.close if @file
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rm_r @filename
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end
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it "coerces the argument to a string using to_s" do
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(obj = mock('test')).should_receive(:to_s).and_return('a string')
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@file.send(@method, obj)
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end
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it "checks if the file is writable if writing more than zero bytes" do
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-> { @readonly_file.send(@method, "abcde") }.should raise_error(IOError)
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end
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it "returns the number of bytes written" do
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written = @file.send(@method, "abcde")
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written.should == 5
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end
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it "invokes to_s on non-String argument" do
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data = "abcdefgh9876"
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(obj = mock(data)).should_receive(:to_s).and_return(data)
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@file.send(@method, obj)
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@file.seek(0)
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@file.read(data.size).should == data
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end
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it "writes all of the string's bytes without buffering if mode is sync" do
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@file.sync = true
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written = @file.send(@method, "abcde")
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written.should == 5
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File.open(@filename) do |file|
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file.read(10).should == "abcde56789"
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end
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end
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it "does not warn if called after IO#read" do
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@file.read(5)
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-> { @file.send(@method, "fghij") }.should_not complain
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end
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it "writes to the current position after IO#read" do
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@file.read(5)
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@file.send(@method, "abcd")
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@file.rewind
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@file.read.should == "01234abcd901234567890123456789"
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end
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it "advances the file position by the count of given bytes" do
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@file.send(@method, "abcde")
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@file.read(10).should == "5678901234"
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end
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it "raises IOError on closed stream" do
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-> { IOSpecs.closed_io.send(@method, "hello") }.should raise_error(IOError)
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end
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it "does not modify the passed argument" do
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File.open(@filename, "w") do |f|
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f.set_encoding(Encoding::IBM437)
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# A character whose codepoint differs between UTF-8 and IBM437
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f.write "ƒ".freeze
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end
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File.binread(@filename).bytes.should == [159]
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end
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describe "on a pipe" do
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before :each do
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@r, @w = IO.pipe
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end
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after :each do
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@r.close
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@w.close
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end
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it "writes the given String to the pipe" do
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@w.send(@method, "foo")
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@w.close
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@r.read.should == "foo"
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end
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# [ruby-core:90895] MJIT worker may leave fd open in a forked child.
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# For instance, MJIT creates a worker before @r.close with fork(), @r.close happens,
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# and the MJIT worker keeps the pipe open until the worker execve().
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# TODO: consider acquiring GVL from MJIT worker.
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guard_not -> { defined?(RubyVM::MJIT) && RubyVM::MJIT.enabled? } do
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it "raises Errno::EPIPE if the read end is closed and does not die from SIGPIPE" do
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@r.close
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-> { @w.send(@method, "foo") }.should raise_error(Errno::EPIPE, /Broken pipe/)
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end
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end
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end
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end
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