test_case.py 文件源码

def test_subtests_failfast(self):
        # Ensure proper test flow with subtests and failfast (issue #22894)
        events = []

        class Foo(unittest.TestCase):
            def test_a(self):
                with self.subTest():
                    events.append('a1')
                events.append('a2')

            def test_b(self):
                with self.subTest():
                    events.append('b1')
                with self.subTest():
                    self.fail('failure')
                events.append('b2')

            def test_c(self):
                events.append('c')

        result = unittest.TestResult()
        result.failfast = True
        suite = unittest.makeSuite(Foo)
        suite.run(result)

        expected = ['a1', 'a2', 'b1']
        self.assertEqual(events, expected)

    # "This class attribute gives the exception raised by the test() method.
    # If a test framework needs to use a specialized exception, possibly to
    # carry additional information, it must subclass this exception in
    # order to ``play fair'' with the framework.  The initial value of this
    # attribute is AssertionError"