refactor: move xvfb to a separate action

.github/actions/test-vscode/action.yml

@@ -0,0 +1,25 @@
+name: Test VS Code
+description: Run the integration tests within VS Code
+
+inputs:
+  command:
+    description: The test command to execute with xvfb-run
+    required: true
+    type: string
+
+runs:
+  using: composite
+  steps:
+    - name: 🧪 Test on Linux
+      if: ${{ runner.os == 'Linux' }}
+      run: xvfb-run -a ${{ inputs.command }}
+      shell: bash
+      env:
+        # Unset wrong Electorn setting,
+        # see: https://github.com/microsoft/vscode-test/issues/127
+        DBUS_SESSION_BUS_ADDRESS: null
+
+    - name: 🧪 Test on MacOS/Windows
+      if: ${{ runner.os != 'Linux' }}
+      run: ${{ inputs.command }}
+      shell: bash

.github/workflows/test.yml

@@ -33,7 +33,7 @@ jobs:
       - name: 🏗 Setup project
         uses: ./.github/actions/setup-project
 
-      - name: ✅ Test scripts
+      - name: 🧪 Test scripts
         run: npm run test:scripts
 
   bundled:
@@ -64,9 +64,10 @@ jobs:
           npm install --no-package-lock --ignore-scripts
 
       - name: 🧪 Test project
-        run: xvfb-run -a npm run test:vscode
+        uses: ./.github/actions/test-vscode
+        with:
+          command: npm run test:vscode
         env:
-          DBUS_SESSION_BUS_ADDRESS: null
           VSCODE_VERSION: stable
 
   vscode:
@@ -100,12 +101,7 @@ jobs:
                 : vscode
             core.exportVariable('VSCODE_VERSION', target)
 
-      - name: 🧪 Test project (Linux)
-        if: ${{ runner.os == 'Linux' }}
-        run: xvfb-run -a npm run test:vscode
-        env:
-          DBUS_SESSION_BUS_ADDRESS: null
-
-      - name: 🧪 Test project (MacOS/Windows)
-        if: ${{ runner.os != 'Linux' }}
-        run: npm run test:vscode
+      - name: 🧪 Test project
+        uses: ./.github/actions/test-vscode
+        with:
+          command: npm run test:vscode