test_webclient.py 文件源码

def test_downloadPageLogsFileCloseError(self):
        """
        If there is an exception closing the file being written to after the
        connection is prematurely closed, that exception is logged.
        """
        class BrokenFile:
            def write(self, bytes):
                pass

            def close(self):
                raise IOError(ENOSPC, "No file left on device")

        d = client.downloadPage(self.getURL("broken"), BrokenFile())
        d = self.assertFailure(d, client.PartialDownloadError)
        def cbFailed(ignored):
            self.assertEqual(len(self.flushLoggedErrors(IOError)), 1)
        d.addCallback(cbFailed)
        return d