pythonpython-3.xunit-testingpytestpython-unittest

Unit testcase with parameterized class fixture in Pytest framework is throwing error

I am new to pytest framework. I need to create a testcase with a parameterized fixture on a class. I have created the testcase as below. But it is throwing an error saying: TypeError: TestClass.test_case_parameterized() missing 1 required positional argument: 'filename' Please someone help on this

import pytest
import unittest
from moto import mock_aws

@pytest.mark.parametrize("filename", ["testFile1.txt", "testFile2.txt"])
@mock_aws
class TestClass(unittest.TestCase):
    def test_case_parameterized(self, filename):
        print(f"filename = {filename}")

        #further aws api call processing`
Solution

  • If you want to use pytest framework, do not derive your TestClass from unittest.

    you can change your code as below:

    import pytest
from moto import mock_aws

@pytest.mark.parametrize("filename", ["testFile1.txt", "testFile2.txt"])
@mock_aws
class TestClass:
    def test_case_parameterized(self, filename):
        print(f"filename = {filename}")
        # further aws api call processing
        # your assertion