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33 lines
945 B
Ruby
33 lines
945 B
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "IO#ioctl" do
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platform_is_not :windows do
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it "raises IOError on closed stream" do
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lambda { IOSpecs.closed_io.ioctl(5, 5) }.should raise_error(IOError)
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end
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end
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platform_is :linux do
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platform_is "86" do # x86 / x86_64
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it "resizes an empty String to match the output size" do
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File.open(__FILE__, 'r') do |f|
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buffer = ''
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# FIONREAD in /usr/include/asm-generic/ioctls.h
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f.ioctl 0x541B, buffer
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buffer.unpack('I').first.should be_kind_of(Integer)
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end
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end
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end
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it "raises an Errno error when ioctl fails" do
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File.open(__FILE__, 'r') do |f|
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lambda {
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# TIOCGWINSZ in /usr/include/asm-generic/ioctls.h
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f.ioctl 0x5413, nil
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}.should raise_error(Errno::ENOTTY)
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end
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end
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end
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end
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