unittest断言简介
unittest提供了丰富断言方法，包含数据类型num，字符串的比较，也包含实例的比较和空的比较
| 方法 | 检查 |
| assertEqual(a, b) | a ==b |
| assertNotEqual(a, b) | a !=b |
| assertTrue(x) | bool(x) is True |
| assertFalse(x) | Bool(x) is False |
| 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) |
| assertNotIsInstance(a, b) | not isinstance(a,b) |
unittest断言因为重复率高，所以亦可以对其进行封装，这样的封装很简单
原文：https://www.cnblogs.com/seyOrd/p/12680763.html