Add GitHub Actions workflow for testing and deployment

Author: OFCode-dev

.github/workflows/deploy.yml

@@ -0,0 +1,66 @@
+name: Test and deploy
+
+on:
+  push:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  test:
+    name: Run test suite
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install test tooling
+        run: npm install --no-save playwright@1 http-server@14 wait-on@7
+
+      - name: Install headless Chromium
+        run: npx playwright install --with-deps chromium
+
+      - name: Serve site
+        run: npx http-server -p 8080 -c-1 . &
+
+      - name: Wait for server
+        run: npx wait-on http://127.0.0.1:8080/tests.html
+
+      - name: Run browser test suite
+        run: node .github/scripts/run-tests.mjs
+
+  deploy:
+    name: Deploy to GitHub Pages
+    needs: test
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Configure Pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: .
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4