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()
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好的,运行一下
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ssFxu
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
FAIL: test_ce_3 (__main__.Test_ce)
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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
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Ran 5 tests in 0.000s
FAILED (failures = 1 , skipped = 2 , expected failures = 1 , unexpected successes = 1 )
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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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