run tests on firefox as well

Author: vincentfretin

.github/workflows/ci.yml

@@ -28,10 +28,12 @@ jobs:
       - name: Install dependencies
         run: npm install
 
-#      - name: Test Cases Using Firefox
-#        uses: GabrielBB/xvfb-action@v1
-#        with:
-#          run: TEST_ENV=ci npm run test:firefox -- --single-run
+      - name: Test Cases Using Firefox
+        uses: GabrielBB/xvfb-action@v1
+        env:
+          TEST_ENV: ci
+        with:
+          run: npm run test:firefox -- --single-run
 
       - name: Test Cases Using Chrome
         uses: GabrielBB/xvfb-action@v1