def test_assertIsInstanceErrorMultipleClasses(self):
        A = type('A', (object,), {})
        B = type('B', (object,), {})
        C = type('C', (object,), {})
        a = A()
        self.assertRaises(self.failureException, self.assertIsInstance, a, (B, C))
Test an error with assertIsInstance and multiple classes.
dataset/ETHPy150Open nlloyd/SubliminalCollaborator/libs/twisted/trial/test/test_assertions.py/TestSynchronousAssertions.test_assertIsInstanceErrorMultipleClasses