init

.github/workflows/test.yml

+name: run unittests & doctests
+on: ["push"]
+jobs:
+  test:
+    runs-on: "ubuntu-latest"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: 3.12
+      - run: python -m unittest
+      - run: python -m doctest my_lib.py

.gitlab-ci.yml

+test:
+  image: ubuntu:22.04
+  script:
+    - apt update && apt install -qy python3
+    - python -m unittest
+    - python -m doctest my_lib.py

my_lib.py

+def my_add(a: int, b: int) -> int:
+    """Performs addition on integers.
+    >>> my_add(3, 4)
+    7
+    """
+    return a + b

test_add.py

+import unittest
+
+
+class TestAddition(unittest.TestCase):
+    def test_addition(self):
+        self.assertEqual(1 + 1, 2)
+
+
+if __name__ == "__main__":
+    unittest.main()

test_my_add.py

+import unittest
+
+from my_lib import my_add
+
+
+class TestMyAddition(unittest.TestCase):
+    def test_my_addition(self):
+        self.assertEqual(my_add(1, 1), 2)
+
+
+if __name__ == "__main__":
+    unittest.main()