分类目录：《系统学习Python》总目录
在自动化测试过程中，我们可能会遇到这样的场景：在某些情况下，测试用例虽然不需要执行，但是我们又不愿意删掉它。下面来看看unittest提供的装饰器功能。
无条件跳过装饰器下面的代码借助@unittest.skip('skip info')装饰器，演示无条件跳过执行某个方法：
import unittest
class MyTestClassOne(unittest.TestCase):
@classmethod
def setUpClass(cls):
print('setUpClass')
def setUp(self):
print('setUp')
def test_001(self):
print('test_first')
self.assertEqual(0, 0)
@unittest.skip('skip info')
def test_002(self):
print('test_second')
self.assertEqual(0, 0)
def test_003(self):
print('test_third')
self.assertEqual(0, 0)
def test_004(self):
print('test_fourth')
self.assertEqual(0, 0)
def tearDown(self):
print('tearDown')
@classmethod
def tearDownClass(cls):
print('tearDownClass')
运行结果如下：
============================= test session starts ============================= collecting ... collected 4 items testclass.py::MyTestClassOne::test_001 setUpClass setUp test_first tearDown testclass.py::MyTestClassOne::test_002 SKIPPED (skip info) Skipped: skip info testclass.py::MyTestClassOne::test_003 setUp test_third tearDown testclass.py::MyTestClassOne::test_004 setUp test_fourth tearDown tearDownClass ======================== 3 passed, 1 skipped in 0.03s ========================= Process finished with exit code 0满足条件跳过装饰器
下面的代码借助@unittest.skipIf(condition， 'info')装饰器，演示当满足某个条件时，跳过执行某个方法：
import unittest
class MyTestClassOne(unittest.TestCase):
i = 10
@classmethod
def setUpClass(cls):
print('setUpClass')
def setUp(self):
print('setUp')
def test_001(self):
print('test_first')
self.assertEqual(0, 0)
@unittest.skipIf(i > 1, 'info')
def test_002(self):
print('test_second')
self.assertEqual(0, 0)
def test_003(self):
print('test_third')
self.assertEqual(0, 0)
def test_004(self):
print('test_fourth')
self.assertEqual(0, 0)
def tearDown(self):
print('tearDown')
@classmethod
def tearDownClass(cls):
print('tearDownClass')
if __name__ == '__main__':
unittest.main()
因为变量i = 1，满足i > 0的条件，所以跳过执行test_002用例，运行结果如下：
============================= test session starts ============================= collecting ... collected 4 items testclass.py::MyTestClassOne::test_001 setUpClass PASSED [ 25%]setUp test_first tearDown testclass.py::MyTestClassOne::test_002 SKIPPED (info) [ 50%] Skipped: info testclass.py::MyTestClassOne::test_003 PASSED [ 75%]setUp test_third tearDown testclass.py::MyTestClassOne::test_004 PASSED [100%]setUp test_fourth tearDown tearDownClass ======================== 3 passed, 1 skipped in 0.03s ========================= Process finished with exit code 0不满足条件跳过
下面的代码借助@unittest.skipUnless(a==5,‘info’)装饰器，演示当不满足某个条件时，跳过执行某个方法。
import unittest
class MyTestClassOne(unittest.TestCase):
i = -1
@classmethod
def setUpClass(cls):
print('setUpClass')
def setUp(self):
print('setUp')
self.i = 1
def test_001(self):
print('test_first')
self.assertEqual(0, 0)
def test_002(self):
print('test_second')
self.assertEqual(0, 0)
def test_003(self):
print('test_third')
self.assertEqual(0, 0)
@unittest.skipUnless(i > 0, 'info')
def test_004(self):
print('test_fourth')
self.assertEqual(0, 0)
def tearDown(self):
print('tearDown')
@classmethod
def tearDownClass(cls):
print('tearDownClass')
if __name__ == '__main__':
unittest.main()
因为i < 0不满足条件，所以跳过test_004用例，运行结果如下：
============================= test session starts ============================= collecting ... collected 4 items testclass.py::MyTestClassOne::test_001 testclass.py::MyTestClassOne::test_002 testclass.py::MyTestClassOne::test_003 testclass.py::MyTestClassOne::test_004 ======================== 3 passed, 1 skipped in 0.03s ========================= Process finished with exit code 0 setUpClass setUp test_first tearDown setUp test_second tearDown setUp test_third tearDown SKIPPED (info) Skipped: info tearDownClass
