Python - 在未引发异常时成功的测试

import unittest

class TestStringMethods(unittest.TestCase):

    def test_upper(self):
        self.assertEqual('foo'.upper(), 'FOO')

    def test_isupper(self):
        self.assertTrue('FOO'.isupper())
        self.assertFalse('Foo'.isupper())

    def test_split(self):
        s = 'hello world'
        self.assertEqual(s.split(), ['hello', 'world'])
        # 测试分隔符
        self.assertEqual(s.split('o'), ['hell', ' w', 'rld'])

if __name__ == '__main__':
    unittest.main()

..
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Ran 3 tests in 0.001s

OK