adjusted workflow

Author: btschwertfeger

.github/workflows/python-package.yml

@@ -36,4 +36,4 @@ jobs:
           flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
       - name: Test with pytest
         run: |
-          pytest
+          pytest cmethods/tests/testing.py