require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "IO#ioctl" do platform_is_not :windows do it "raises IOError on closed stream" do lambda { IOSpecs.closed_io.ioctl(5, 5) }.should raise_error(IOError) end end platform_is :linux do platform_is "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 an Errno error when ioctl fails" do File.open(__FILE__, 'r') do |f| lambda { # TIOCGWINSZ in /usr/include/asm-generic/ioctls.h f.ioctl 0x5413, nil }.should raise_error(Errno::ENOTTY) end end end end