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| | # -*- encoding: binary -*-
require_relative 'helper'
require 'fcntl'
class TestPipesize < Test::Unit::TestCase
def test_pipe_size
return unless RUBY_PLATFORM =~ /linux/
[ :F_GETPIPE_SZ, :F_SETPIPE_SZ ].each do |c|
return unless SleepyPenguin.const_defined?(c)
end
r, w = pipe = IO.pipe
nr = r.fcntl(SleepyPenguin::F_GETPIPE_SZ)
assert_kind_of Integer, nr
assert_operator nr, :>, 0
set = 131072
r.fcntl(SleepyPenguin::F_SETPIPE_SZ, set)
assert_equal set, r.fcntl(SleepyPenguin::F_GETPIPE_SZ)
ensure
pipe.each(&:close) if pipe
end
end
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