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require 'test/unit'
class TestWaitForSingleFD < Test::Unit::TestCase
require '-test-/wait_for_single_fd/wait_for_single_fd'
def with_pipe
r, w = IO.pipe
begin
yield r, w
ensure
r.close unless r.closed?
w.close unless w.closed?
end
end
def test_wait_for_valid_fd
with_pipe do |r,w|
rc = IO.wait_for_single_fd(w.fileno, RB_WAITFD_OUT, nil)
assert_equal RB_WAITFD_OUT, rc
end
end
def test_wait_for_invalid_fd
with_pipe do |r,w|
wfd = w.fileno
w.close
assert_raises(Errno::EBADF) do
IO.wait_for_single_fd(wfd, RB_WAITFD_OUT, nil)
end
end
end
def test_wait_for_closed_pipe
with_pipe do |r,w|
w.close
rc = IO.wait_for_single_fd(r.fileno, RB_WAITFD_IN, nil)
assert_equal RB_WAITFD_IN, rc
end
end
end
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