Functional test testing

.github/workflows/run-tox.yml

@@ -55,10 +55,14 @@ jobs:
       run: |
         python -m pip install --upgrade pip setuptools
         pip install tox-gh-actions
+        pip install libsonata
+        pip install mock
+        pip install pytest
+        pip install tables
 
-    - name: Run tox
+    - name: Run pytest
       run: |
-        tox -e functional
+        pytest -vv tests/functional
 
     - name: Upload to codecov
       if: ${{matrix.python-version == '3.10'}}