unittest的TestCase类提供的判断方法
| 方法 | 用法 |
|---|---|
| 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 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) 断言a是b的一个实例 |
| assertNotIsInstance(a, b) | not isinstance(a, b) 断言a不是b的实例 |
检查日志、消息、警告的生成的方法：
| 方法 | 用途 |
|---|---|
| assertRaises(exc, fun, *args, **kwds) | fun(*args, **kwds) raises exc |
| assertRaisesRegex(exc, r, fun, *args, **kwds) | fun(*args, **kwds) raises exc and the message matches regex r |
| assertWarns(warn, fun, *args, **kwds) | fun(*args, **kwds) raises warn |
| assertWarnsRegex(warn, r, fun, *args, **kwds) | fun(*args, **kwds) raises warn and the message matches regex r |
| assertLogs(logger, level) | The with block logs on logger with minimum level |
一些其他常用方法：
| Method | Checks that |
|---|---|
| assertAlmostEqual(a, b) | round(a-b, 7) == 0 |
| assertNotAlmostEqual(a, b) | round(a-b, 7) != 0 |
| assertGreater(a, b) | a > b |
| assertGreaterEqual(a, b) | a >= b |
| assertLess(a, b) | a < b |
| assertLessEqual(a, b) | a <= b |
| assertRegex(s, r) | r.search(s) |
| assertNotRegex(s, r) | not r.search(s) |
| assertCountEqual(a, b) | a and b have the same elements in the same number, regardless of their order |