test_loader.py 文件源码

def check_deferred_error(self, loader, suite):
        """Helper function for checking that errors in loading are reported.

        :param loader: A loader with some errors.
        :param suite: A suite that should have a late bound error.
        :return: The first error message from the loader and the test object
            from the suite.
        """
        self.assertIsInstance(suite, unittest.TestSuite)
        self.assertEqual(suite.countTestCases(), 1)
        # Errors loading the suite are also captured for introspection.
        self.assertNotEqual([], loader.errors)
        self.assertEqual(1, len(loader.errors))
        error = loader.errors[0]
        test = list(suite)[0]
        return error, test

    # "Similar to loadTestsFromName(), but takes a sequence of names rather
    # than a single name."
    #
    # What happens if that sequence of names is empty?