Python Unittest structure

Question

So in my project I have a long (~1000 lines)TestCase module with only 1 TestCase.
I want to divide it into 3-4 separate TestCase modules (separate files).
But how can I make a common setUp to share fixtures for all modules?
Use some import fixtures?
I use setUpClass in that my long module with a single TestCase.
Pls, advise.

Answer 1

What you can do is define a parent class, e.g.

class CommonTestCase(unittest.TestCase):
    def setUpClass(self):
        # Do setup or anything else here

and then in other files or cases you can use inheritance to use the same setup steps from parent class CommonTestCase:

from my_package import CommonTestCase

class MyTestCaseA(CommonTestCase):
    def test_this(self):
        # Test implementation

class MyTestCaseB(CommonTestCase):
    def test_that(self):
        # Test implementation