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require 'test/unit'
begin
require 'io/nonblock'
rescue LoadError
end
class TestIONonblock < Test::Unit::TestCase
def test_flush # [ruby-dev:24985]
r,w = IO.pipe
w.nonblock = true
w.sync = false
w << "b"
w.flush
w << "a" * 4096
Thread.new {
Thread.pass
w.close
}
result = ""
t = Thread.new {
while (Thread.pass; s = r.read(4096))
result << s
end
}
assert_raise(IOError) {w.flush}
assert_nothing_raised {t.join}
end
end if IO.method_defined?(:nonblock)
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