test with pytest

.github/workflows/python-tests.yml

@@ -34,6 +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 unittest
+      - name: Test with pytest
         run: |
-          python -m unittest tests/test_rendercv.py
+          pip install pytest pytest-cov
+          pytest tests.py --doctest-modules --junitxml=junit/test-results.xml --cov=com --cov-report=xml --cov-report=html