python的unittest单元测试框架断言整理汇总
自动化脚本最重要的是断言,正确设置断言以后才能帮助我们判断测试用例执行结果。
一、先说说unittest常用的断言吧
常用的就以下几个,网上一搜一大堆。python版本2.7以上都可以调用了。
断言语法 | 解释 |
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) |
assertNotIsInstance(a, b) | not isinstance(a, b) |
二、最近整理的一些
在官方文档里面看到的整理一下,有些还来不及翻译。
assertAlmostEqual(first, second[, places, ...]) |
适用于小数,place是应最少几位相等布尔值才为1(默认为7),如果在place位以内不同则断言失败。 |
assertDictContainsSubset(expected, actual[, msg]) |
检查实际是否超预期 |
assertDictEqual(d1, d2[, msg]) |
前后字典是否相同 |
assertEqual(first, second[, msg]) |
前后两个数不等的话,失败 |
assertFalse(expr[, msg]) |
检查表达式是否为假 |
assertGreater(a, b[, msg]) |
和self.assertTrue(a > b)用法一样,但是多了设置条件 . |
assertGreaterEqual(a, b[, msg]) |
和self.assertTrue(a > |
assertIn(member, container[, msg]) |
self.assertTrue(a in b) |
assertIs(expr1, expr2[, msg]) |
assertTrue(a is b) |
assertIsInstance(obj, cls[, msg]) |
Isinstance(a,b) |
assertIsNone(obj[, msg]) |
Obj is none. |
assertIsNot(expr1, expr2[, msg]) |
a is not b. |
assertIsNotNone(obj[, msg]) |
Obj is not none. |
assertItemsEqual(expected_seq, actual_seq[, msg]) |
一个无序的序列特异性的比较。 |
assertLess(a, b[, msg]) |
Just like self.assertTrue(a < b), but with a nicer default message. |
assertLessEqual(a, b[, msg]) |
Just like self.assertTrue(a <= b), but with a nicer default message. |
assertListEqual(list1, list2[, msg]) |
List1与list2是否相等. |
assertMultiLineEqual(first, second[, msg]) |
断言,2个多行字符串是相等的 |
assertNotAlmostEqual(first, second[, ...]) |
Fail if the two objects are equal |
assertNotAlmostEquals(first, second[, ...]) |
Fail if the two objects are equal |
assertNotEqual(first, second[, msg]) |
Fail if the two objects are equal as determined by the ‘==’ |
assertNotEquals(first, second[, msg]) |
Fail if the two objects are equal as determined by the ‘==’ |
assertNotIn(member, container[, msg]) |
Just like self.assertTrue(a not in b), but with a nicer default message. |
assertNotIsInstance(obj, cls[, msg]) |
Included for symmetry with assertIsInstance. |
assertNotRegexpMatches(text, unexpected_regexp) |
如果文本匹配正则表达式,将失败。 |
assertRaises(excClass[, callableObj]) |
除非excclass类抛出异常失败 |
assertRaisesRegexp(expected_exception, ...) |
认为在引发异常的情况下消息匹配一个正则表达式。 |
assertRegexpMatches(text, expected_regexp[, msg]) |
测试失败,除非文本匹配正则表达式。 |
assertSequenceEqual(seq1, seq2[, msg, seq_type]) |
有序序列的相等断言 (like lists and tuples). |
assertSetEqual(set1, set2[, msg]) |
A set-specific equality assertion. |
assertTrue(expr[, msg]) |
Check that the expression is true. |
assertTupleEqual(tuple1, tuple2[, msg]) |
A tuple-specific equality assertion. |
assert_(expr[, msg]) |
Check that the expression is true. |
三、在unittest包里面看到的比较全的断言
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