def test_LogReaderReadsZeroLine(self):
        """
        L{LogReader.readLines} supports reading no line.
        """
        # We don't need any content, just a file path that can be opened.
        with open(self.path, "w"):
            pass

        reader = logfile.LogReader(self.path)
        self.addCleanup(reader.close)
        self.assertEqual([], reader.readLines(0))

        L{LogReader.readLines} supports reading no line.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_logfile.py