Python unittest inheritance setUp overriding

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()

Output :

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)

In the above code, the test case test_one is using the setUp() of class A. However in the derived class test_one is using the setUp() of class B. Is there a way by which I can use the setUp() of A for every test case derived from it??.

Answer 1

Just make sure to call super, in every child class where you've overridden it.

class B(A, unittest.TestCase):

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