unittest常用的断言方法
1.assertEqual(self, first, second, msg=None)
--判断两个参数相等:first == second
2.assertNotEqual(self, first, second, msg=None)
--判断两个参数不相等:first != second
3.assertIn(self, member, container, msg=None)
--判断是字符串是否包含:member in container
4.assertNotIn(self, member, container, msg=None)
--判断是字符串是否不包含:member not in container
5.assertTrue(self, expr, msg=None)
--判断是否为真:expr is True
6.assertFalse(self, expr, msg=None)
--判断是否为假:expr is False
7.assertIsNone(self, obj, msg=None)
--判断是否为None:obj is None
8.assertIsNotNone(self, obj, msg=None)
--判断是否不为None:obj is not None