Invoke pytest directly

Author: AA-Turner

.github/workflows/test.yml

@@ -11,6 +11,11 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
+env:
+  FORCE_COLOR: "1"
+  PYTHONDEVMODE: "1"  # -X dev
+  PYTHONWARNDEFAULTENCODING: "1"  # -X warn_default_encoding
+
 jobs:
   tests:
     runs-on: ubuntu-latest
@@ -33,12 +38,11 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install --upgrade tox
+          python -m pip install --upgrade pytest
+          python -m pip install --upgrade Sphinx @ git+https://github.com/sphinx-doc/sphinx
 
-      - name: Run tox
-        run: |
-          python -V
-          tox -- -v --durations=25
+      - name: Test with pytest
+        run: python -m pytest --durations 25
 
   lint:
     runs-on: ubuntu-latest