Python单元测试unittest中提供了一下四种装饰器实现测试跳过和预期故障。(使用Python 2.7.13)
请查考Python手册中:
https://docs.python.org/dev/library/unittest.html
The following decorators implement test skipping and expected failures:
#以下装饰器实施测试跳过和预期故障:
@unittest.skip(原因)
Unconditionally skip the decorated test. reason should describe why the test is being skipped.
#无条件跳过装饰测试。 原因应该说明为什么要跳过测试。
@unittest.skipIf(条件,原因)
Skip the decorated test if condition is true.
#如果条件为真,跳过装饰测试。
@unittest.skipUnless(条件,原因)
Skip the decorated test unless condition is true.
# 跳过装饰的测试,除非条件是真的。
@unittest.expectedFailure
Mark the test as an expected failure. If the test fails when run, the test is not counted as a failure.
#将测试标记为预期的失败。 如果测试在运行时失败,则测试不会被视为失败。
(以上采用谷歌翻译,可能会有差异)
好了,写段代码看下,test.py ,使用的Eclipse
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#coding:UTF-8 import unittest from test.test_pprint import uni class Test_ce(unittest.TestCase): a = 16 b = 10 @unittest .skip( '无条件跳过' ) def test_ce1( self ): self .assertEqual(( self .a - self .b), 16 ) #判断是否相等 @unittest .skipIf( True = = 1 , '条件为真则跳过' ) def test_ce_2( self ): self .assertFalse( self .a = = self .b) #判断是否为False @unittest .skipUnless( 1 = = 1 , '条件为假则跳过' ) def test_ce_3( self ): self .assertTrue( self .a> 16 ) #判断是否为True @unittest .expectedFailure def test_ce_4( self ): self .assertFalse( self .a = = 16 ) @unittest .expectedFailure def test_ce_5( self ): self .assertFalse( self .a = = 15 ) if __name__ = = '__main__' : unittest.main() |
好的,运行一下
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ssFxu = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = FAIL: test_ce_3 (__main__.Test_ce) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Traceback (most recent call last): File "D:\Escplise\workspace\Pytest\src\test001\CE.py" , line 20 , in test_ce_3 self .assertTrue( self .a> 16 ) AssertionError: False is not true - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Ran 5 tests in 0.000s FAILED (failures = 1 , skipped = 2 , expected failures = 1 , unexpected successes = 1 ) |
好的,我们对第1行代码进行分析:
s:全称是skipped(跳过)
s:条件为真,所以也是skipped(跳过)
F:条件为真,所以忽略装饰器,执行断言代码,显然是failures(失败)
x:断言结果显然是失败的,但是这是在我们意料之中,所以是expected failures(预期的失败)
u:断言结果显然是pass,但是我们预计可能不通过,所以是unexpected successes(意想不到的成功)
即第13行代码 所示 FAILED (failures=1, skipped=2, expected failures=1, unexpected successes=1)
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