Unusual fixes or usecase for python unittest library

unusual_unitttest_usecases.py

#!/usr/bin/env python3

import unittest

"""
Example test for running similar test 
with parameters in a loop
"""


class SimilarTestsRun(unittest.TestCase):
    testsmap = {
        'setA': [1, 1],
        'setB': [1, 2],
        'setC': [5, 5],
        'setD': [5, 6],
    }

    @classmethod
    def setUpClass(cls):
        print("***{} started***".format(cls.__name__))

    def test_a(self):
        for name, (a, b) in self.testsmap.items():
            with self.subTest(name=name):
                print('Test run: ', name)
                print(a)
                a += 1
                print(a)
                assert a == b, name

    @classmethod
    def tearDownClass(cls):
        print("***{} ended***".format(cls.__name__))


"""
Example of test that changes the state of variable and 
makes it accessible to next tests 
"""


class TestChangeClassAttribute(unittest.TestCase):
    foo = 'bar'

    @classmethod
    def setUpClass(cls):
        print("***{} started***".format(cls.__name__))

    def setUp(self):
        print("Setup of test")
        pass

    def test_a(self):
        print("Setting foo to can")
        self.assertEqual(self.__class__.foo, 'bar')
        self.__class__.foo = 'can'

    def test_f(self):
        print("Checking if its still all right")
        self.assertEqual(self.__class__.foo, 'can')

    def test_z(self):
        print(self.__class__.foo)

    @classmethod
    def tearDownClass(cls):
        print("***{} ended***".format(cls.__name__))


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