Change test framework from pytest to unittest

Author: DevCTx

.github/workflows/unittest_questionnaire.yml

@@ -34,7 +34,7 @@ jobs:
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
-    - name: Test with pytest
+    - name: Test with unittest
       run: |
         python -m unittest questionnaire_unit_test.py