Add working GitHub Actions workflow for running tests

Author: stefanrammo

.github/workflows/test.yml

@@ -25,12 +25,9 @@ jobs:
       - name: Run tests
         run: npm test
 
-      - name: Upload test results
+      - name: Cleanup
         if: always()
-        uses: actions/upload-artifact@v3
-        with:
-          name: test-results
-          path: |
-            coverage/
-            test-results/
-          if-no-files-found: ignore 
+        run: |
+          echo "Cleaning up..."
+          rm -rf node_modules
+          rm -rf .npm