测试教程网.unittest教程.7. 各种断言方法

From: http://www.testclass.net/pyunit/assert/

背景

unittest支持各种断言方法。

断言列表

官方文档

方法	检查点
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)
assertRaises(exc, fun, *args, **kwds)	fun(*args, **kwds) raises exc
assertRaisesRegexp(exc, r, fun, *args, **kwds)	fun(*args, **kwds) raises exc and the message matches regex r
assertAlmostEqual(a, b)	round(a-b, 7) == 0
assertNotAlmostEqual(a, b)	round(a-b, 7) != 0
assertGreater(a, b)	a > b 2.7
assertGreaterEqual(a, b)	a >= b
assertLess(a, b)	a < b
assertLessEqual(a, b)	a <= b
assertRegexpMatches(s, r)	r.search(s)
assertNotRegexpMatches(s, r)	not r.search(s)
assertItemsEqual(a, b)	sorted(a) == sorted(b) 也支持unhashable对象
assertDictContainsSubset(a, b)	a里面所有的键值对都在b中存在

自己动手

大家可以自己动手亲自尝试使用这些断言方法。