Python 单元测试继承设置覆盖

Question

import unittest

class A(unittest.TestCase):
    def setUp(self):
        print "Hi it's you",self._testMethodName

    def test_one(self):
        self.assertEqual(5,5)

    def tearDown(self):
        print "Bye it's you", self._testMethodName

class B(A,unittest.TestCase): 

    def setUp(self):
        print "Hi it's me", self._testMethodName

    def test_two(self):
        self.assertNotEqual(5,5)


unittest.main()

输出：

Hi it's you test_one
Bye it's you test_one
.Hi it's me test_one
Bye it's you test_one
.Hi it's me test_two
FBye it's you test_two

======================================================================
FAIL: test_two (__main__.B)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "try_test_generators.py", line 19, in test_two
    self.assertNotEqual(5,5)
AssertionError: 5 == 5

----------------------------------------------------------------------
Ran 3 tests in 0.005s

FAILED (failures=1)

在上面的代码中，测试用例test_one使用的是classA的setUp()。但是在派生的class中使用的是test_one class B 的 setUp()。有没有一种方法可以将 A 的 setUp() 用于派生的每个测试用例？？。

Answer 1

您可以试试这个代码：

import unittest

class A(unittest.TestCase):
    def setUp(self):
        print("Hi it's you", self._testMethodName)

    def test_one(self):
        self.assertEqual(5, 5)

    def tearDown(self):
        print("Bye it's you", self._testMethodName)

class B(A, unittest.TestCase):

    def setUp(self):
        test = A()
        super(B, B).setUp(test)

    def test_two(self):
        self.assertNotEqual(5, 5)

if __name__ == '__main__':
    unittest.main()

以下是我对此类问题的一些启发：

TypeError: attack() missing 1 required positional argument: 'self'
super() and @staticmethod interaction

Answer 2

只需确保在您覆盖它的每个子 class 中调用 super。

class B(A, unittest.TestCase):

    def setUp(self):
        print "Hi it's me", self._testMethodName
        super(B, self).setUp()

Python 单元测试继承设置覆盖

Python unittest inheritance setUp overriding

python

python-unittest