def startTest(self, test):
        """
        This must be called before the given test is commenced.

        @type test: L{pyunit.TestCase}
        """
        super(TestResult, self).startTest(test)
        self._testStarted = self._getTime()

        This must be called before the given test is commenced.

        @type test: L{pyunit.TestCase}
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/reporter.py