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require 'test/unit'
require 'timeout'
require 'socket'
begin
require 'io/wait'
rescue LoadError
end
class TestIOWait < Test::Unit::TestCase
def setup
@r, @w = Socket.pair(Socket::AF_INET, Socket::SOCK_STREAM, 0)
end
def teardown
@r.close unless @r.closed?
@w.close unless @w.closed?
end
def test_nread
assert_equal 0, @r.nread
@w.syswrite "."
assert_equal 1, @r.nread
end
def test_nread_buffered
@w.syswrite ".\n!"
assert_equal ".\n", @r.read(2)
assert_equal 1, @r.nread
end
def test_ready?
refute @r.ready?
@w.syswrite "."
assert @r.ready?
end
def test_buffered_ready?
@w.syswrite ".\n!"
assert_equal ".\n", @r.gets
assert @r.ready?
end
def test_wait
assert_nil @r.wait(0)
@w.syswrite "."
assert_equal @r, @r.wait(0)
end
def test_wait_buffered
@w.syswrite ".\n!"
assert_equal ".\n", @r.gets
assert_equal true, @r.wait(0)
end
def test_wait_forever
Thread.new { sleep 0.01; @w.syswrite "." }
assert_equal @r, @r.wait
end
def test_wait_eof
Thread.new { sleep 0.01; @w.close }
assert_nil @r.wait
end
end if IO.method_defined?(:wait)
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