def test_goodFile(self):
        fd = open(self.tempfilepath, 'a')
        fd.close()
        d = self.runPyflakes([self.tempfilepath])
        self.assertEqual(d, ('', '', 0))
When a Python source file is all good, the return code is zero and no
dataset/ETHPy150Open patrys/PythonChecker/pyflakes/test/test_api.py/IntegrationTests.test_goodFile