build: replace xvfb-run command with setup-xvfb action for headless testing

Author: jpoehnelt

.github/actions/setup-xvfb/action.yml

@@ -0,0 +1,29 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "Setup Xvfb"
+description: "Install and start Xvfb virtual display server for headless testing"
+runs:
+  using: "composite"
+  steps:
+    - name: Install Xvfb
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y xvfb
+    - name: Start Xvfb
+      shell: bash
+      run: |
+        Xvfb :99 -screen 0 1024x768x24 > /dev/null 2>&1 &
+        echo "DISPLAY=:99.0" >> $GITHUB_ENV

.github/workflows/release.yml

@@ -37,7 +37,8 @@ jobs:
       - run: pnpm build
       - run: pnpm lint
       - run: pnpm check
-      - run: xvfb-run -a --server-args="-screen 0 1024x768x24" pnpm test
+      - uses: ./.github/actions/setup-xvfb
+      - run: pnpm test
       - run: pnpm ci:package
       - run: |
           git config --global user.name "googleworkspace-bot"

.github/workflows/test.yml

@@ -31,5 +31,6 @@ jobs:
       - run: pnpm build
       - run: pnpm lint
       - run: pnpm check
-      - run: xvfb-run -a --server-args="-screen 0 1024x768x24" pnpm test
+      - uses: ./.github/actions/setup-xvfb
+      - run: pnpm test
       - run: pnpm ci:package

.github/workflows/update.yml

@@ -31,7 +31,8 @@ jobs:
       - run: pnpm ci:update
       - run: pnpm lint
       - run: pnpm check
-      - run: xvfb-run -a --server-args="-screen 0 1024x768x24" pnpm test
+      - uses: ./.github/actions/setup-xvfb
+      - run: pnpm test
       - name: Check for changes
         id: changes
         uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47.0.0