test: Setup Playwright and add some tests

.github/workflows/playwright.yml

@@ -0,0 +1,67 @@
+# SPDX-FileCopyrightText: 2024 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: MIT
+
+name: Playwright Tests
+
+on:
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    timeout-minutes: 60
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout app
+        uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
+        with:
+          persist-credentials: false
+
+      - name: Check composer.json
+        id: check_composer
+        uses: andstor/file-existence-action@076e0072799f4942c8bc574a82233e1e4d13e9d6 # v3.0.0
+        with:
+          files: 'composer.json'
+
+      - name: Install composer dependencies
+        if: steps.check_composer.outputs.files_exists == 'true'
+        run: composer install --no-dev
+
+      - name: Read package.json node and npm engines version
+        uses: skjnldsv/read-package-engines-version-actions@06d6baf7d8f41934ab630e97d9e6c0bc9c9ac5e4 # v3
+        id: versions
+        with:
+          fallbackNode: '^20'
+          fallbackNpm: '^10'
+
+      - name: Set up node ${{ steps.versions.outputs.nodeVersion }}
+        uses: actions/setup-node@2028fbc5c25fe9cf00d9f06a71cc4710d4507903 # v6.0.0
+        with:
+          node-version: ${{ steps.versions.outputs.nodeVersion }}
+
+      - name: Set up npm ${{ steps.versions.outputs.npmVersion }}
+        run: npm i -g 'npm@${{ steps.versions.outputs.npmVersion }}'
+
+      - name: Install node dependencies & build app
+        env:
+          CYPRESS_INSTALL_BINARY: 0
+        run: |
+          npm ci
+          TESTING=true npm run build --if-present
+
+      - name: Install Playwright Browsers
+        run: npx playwright install chromium --only-shell
+
+      - name: Run Playwright tests
+        run: npx playwright test
+
+      - name: Upload results
+        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+        if: always()
+        with:
+          name: playwright-report
+          path: test-results/
+          retention-days: 30

.gitignore

@@ -52,3 +52,5 @@ nbproject
 
 # Mac OS
 .DS_Store
+
+test-results/