unittest assert 断言语法

assertEqual(a, b)　　判断 a==b

assertNotEqual(a, b)　　判断a!=b

assertTrue(x)　　bool(x) is True

assertFalse(x)　　bool(x) is Flase

assertIs(a, b)　　a is b

assertIsNot(a, b)　　a is not b

assertIsNone(x)　　x is None

assertIsNotNone(x)　　x is not None

assertIn(a, b)　　a in b

assertNotIn(a, b)　　a not in b

assertIsInstance(a, b)　　isinstance(a, b)　　a 是 b的实例

assertNotIsInstance(a, b)　　not isinstance(a, b)　　a 不是 b的实例