test_process.py 文件源码

def test_stderr(self):
        """ProcessProtocol.transport.closeStderr actually closes the pipe."""
        d = self.doit(2)
        def _check(errput):
            # there should be no stderr open, so nothing for it to
            # write the error to.
            self.failUnlessEqual(errput, '')
        d.addCallback(_check)
        return d