Run playwright tests in CI

eclipse-theia#10337

.github/workflows/build.yml

@@ -64,6 +64,12 @@ jobs:
         with:
           run: yarn browser test
 
+      - name: Test (playwright)
+        if: matrix.tests != 'skip' && runner.os == 'Linux' && matrix.node =='16.x'
+        uses: GabrielBB/xvfb-action@v1
+        with:
+          run: yarn test:playwright
+
       - name: Test (electron)
         if: matrix.tests != 'skip' && runner.os == 'Linux'
         uses: GabrielBB/xvfb-action@v1

package.json

@@ -75,6 +75,7 @@
     "rebuild:clean": "rimraf .browser_modules",
     "test": "yarn -s test:theia && yarn -s electron test && yarn -s browser test",
     "test:theia": "lerna run --scope \"@theia/!(example-)*\" test --stream --concurrency=1",
+    "test:playwright": "concurrently --success first -c gray,blue -k -n theia,playwright \"yarn browser start\" \"yarn -s --cwd examples/playwright ui-tests\"",
     "watch": "concurrently --kill-others -n tsc,browser,electron -c red,yellow,blue \"tsc -b -w --preserveWatchOutput\" \"yarn -s --cwd examples/browser watch:bundle\" \"yarn -s --cwd examples/electron watch:bundle\"",
     "watch:compile": "concurrently --kill-others -n cleanup,tsc -c magenta,red \"ts-clean dev-packages/* packages/* -w\" \"tsc -b -w --preserveWatchOutput\"",
     "performance:startup": "yarn -s performance:startup:browser && yarn -s performance:startup:electron",