Add Playwright e2e tests for PDF viewer

.github/workflows/playwright.yml

@@ -0,0 +1,103 @@
+# SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: MIT
+
+name: Playwright
+
+on: pull_request
+
+permissions:
+  contents: read
+
+concurrency:
+  group: playwright-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  changes:
+    runs-on: ubuntu-latest-low
+    permissions:
+      contents: read
+      pull-requests: read
+
+    outputs:
+      src: ${{ steps.changes.outputs.src }}
+
+    steps:
+      - uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
+        id: changes
+        with:
+          filters: |
+            src:
+              - '.github/workflows/**'
+              - 'appinfo/**'
+              - 'js/**'
+              - 'lib/**'
+              - 'playwright/**'
+              - 'src/**'
+              - 'templates/**'
+              - 'package.json'
+              - 'package-lock.json'
+              - 'playwright.config.ts'
+
+  e2e:
+    runs-on: ubuntu-latest
+
+    needs: changes
+    if: needs.changes.outputs.src != 'false'
+
+    name: Playwright e2e tests
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
+        with:
+          persist-credentials: false
+
+      - name: Read package.json node and npm engines version
+        uses: skjnldsv/read-package-engines-version-actions@06d6baf7d8f41934ab630e97d9e6c0bc9c9ac5e4 # v3
+        id: versions
+        with:
+          fallbackNode: '^24'
+          fallbackNpm: '^11.3'
+
+      - name: Set up node ${{ steps.versions.outputs.nodeVersion }}
+        uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
+        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 dependencies
+        run: npm ci
+
+      - name: Install Playwright browser
+        run: npx playwright install chromium --only-shell
+
+      - name: Run Playwright tests
+        run: npx playwright test
+        env:
+          CI: true
+
+      - name: Upload Playwright report
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+        if: ${{ !cancelled() }}
+        with:
+          name: playwright-report
+          path: playwright-report/
+          retention-days: 30
+
+  summary:
+    permissions:
+      contents: none
+    runs-on: ubuntu-latest-low
+    needs: [changes, e2e]
+
+    if: always()
+
+    # This is the summary, we just avoid to rename it so that branch protection rules still match
+    name: playwright
+
+    steps:
+      - name: Summary status
+        run: if ${{ needs.changes.outputs.src != 'false' && needs.e2e.result != 'success' }}; then exit 1; fi

.gitignore

@@ -64,3 +64,9 @@ node_modules
 **/vendor/
 /build
 composer.phar
+
+# Playwright
+/playwright-report/
+/blob-report/
+/playwright/.cache/
+/test-results/