Persist variable changes between tests in unittest?

Question

How do I persist changes made within the same object inheriting from TestCase in unitttest?

from unittest import TestCase, main as unittest_main         


        

Answer 1

I like your own answer for the simplicity of it, but if you want to keep distinct unit tests:

Apparently unittest runs separate tests with fresh instances of the TestCase. Well, just bind the objects to be persisted to something else but self. For example:

from unittest import TestCase, main as unittest_main


class TestSimpleFoo(TestCase):

    def setUp(self):
        pass

    def test_a(self):
        TestSimpleFoo.foo = 'can'

    def test_f(self):
        self.assertEqual(TestSimpleFoo.foo, 'can')


if __name__ == '__main__':
    unittest_main()

You might be interesed in setUpClass and tearDownClass too: https://docs.python.org/3/library/unittest.html#setupclass-and-teardownclass

Also take care about the execution order of your unit tests: https://docs.python.org/2/library/unittest.html#unittest.TestLoader.sortTestMethodsUsing