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