测试开发技术网站

[【原文链接】UnitTest自动化测试框架中skip的用法](http://devops-dev.com/article/154)

[TOC]

# 1、无条件跳过skip
比如一个用例正在开发中或者用例废弃了，但是需要保存存档，此时可以加上skip装饰，同时加上跳过的原因，代码如下：

```python
import unittest

class TestDemo01(unittest.TestCase):

@unittest.skip("正在开发中...")
    def test_01(self):
        print("in test_01...")

def test_02(self):
        print("in test_02...")

if __name__ == "__main__":
    unittest.main()
```
执行结果如下：

```python
Skipped: 正在开发中...
in test_02...

Ran 2 tests in 0.002s

OK (skipped=1)
```
# 2、有条件跳过skipIf()和skipUnless()
skipIf()当后面的条件为True时跳过，skipUnless()当后面的条件为False时跳过，具体代码实现如下

```python
import unittest

class TestDemo01(unittest.TestCase):

@unittest.skipIf(2 > 1, "不满足执行条件")
    def test_01(self):
        print("in test_01...")

@unittest.skipUnless(1 > 2, "当前面条件为假时跳过不执行")
    def test_02(self):
        print("in test_02...")

def test_03(self):
        print("in test_03...")

if __name__ == "__main__":
    unittest.main()
```
执行结果如下：

```python
Ran 3 tests in 0.002s

OK (skipped=2)

Skipped: 不满足执行条件

Skipped: 当前面条件为假时跳过不执行
in test_03...
```
skipIf()和skipUnless()应用于动态的控制用例执行，比如当环境出现什么情况时，此用例执行没有意义了，此时可以通过这个去控制

# 3、用例失败时忽略expectedFailure
当某个用例失败时想忽略时可以使用expectedFailure去装饰用例，代码如下

```python
import unittest

class TestDemo01(unittest.TestCase):

@unittest.expectedFailure
    def test_01(self):
        self.assertEqual(1, 2)
        print("in test_01...")

def test_02(self):
        print("in test_02...")

if __name__ == "__main__":
    unittest.main()
```
执行结果如下：

```python
Ran 2 tests in 0.004s

OK (expected failures=1)

Expected failure: Traceback (most recent call last):
  File "D:\ProgrameFile\PyCharm 2020.1\plugins\python\helpers\pycharm\teamcity\diff_tools.py", line 32, in _patched_equals
    old(self, first, second, msg)
  File "d:\python39\lib\unittest\case.py", line 831, in assertEqual
    assertion_func(first, second, msg=msg)
  File "d:\python39\lib\unittest\case.py", line 824, in _baseAssertEqual
    raise self.failureException(msg)
AssertionError: 1 != 2

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "d:\python39\lib\unittest\case.py", line 59, in testPartExecutor
    yield
  File "d:\python39\lib\unittest\case.py", line 593, in run
    self._callTestMethod(testMethod)
  File "d:\python39\lib\unittest\case.py", line 550, in _callTestMethod
    method()
  File "G:\src\UT\demo\test01.py", line 8, in test_01
    self.assertEqual(1, 2)
  File "D:\ProgrameFile\PyCharm 2020.1\plugins\python\helpers\pycharm\teamcity\diff_tools.py", line 38, in _patched_equals
    raise error
teamcity.diff_tools.EqualsAssertionError:  :: 1 != 2

in test_02...
```

测试开发技术网站

博客