tests: use dup-ed stdin in wait_on_fail
transport.close() (necessary to detach reader from the loop) will close the FD. In case of stdin, it will prevent another call to this waiting function. Use dup(2) to register cloned FD, which is safe to close without side effects.
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79fb0cade1
@ -249,7 +249,7 @@ def wait_on_fail(func):
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transport, protocol = self.loop.run_until_complete(
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self.loop.connect_read_pipe(
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lambda: asyncio.StreamReaderProtocol(reader),
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sys.stdin))
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os.fdopen(os.dup(sys.stdin.fileno()))))
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self.loop.run_until_complete(reader.readline())
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transport.close()
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raise
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