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require 'test/unit'
$-w = true
require 'kgio'
class TestSingletonReadWrite < Test::Unit::TestCase
def test_unix_socketpair
a, b = UNIXSocket.pair
Kgio.trywrite(a, "HELLO")
buf = ""
assert_equal "HELLO", Kgio.tryread(b, 5, buf)
assert_equal "HELLO", buf
assert_equal :wait_readable, Kgio.tryread(b, 5)
end
def test_arg_error
assert_raises(ArgumentError) { Kgio.tryread }
assert_raises(ArgumentError) { Kgio.tryread($stdin) }
assert_raises(ArgumentError) { Kgio.trywrite($stdout) }
end
end
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