ci: fix extension activation in tests (build dist) and add Xvfb for linux

Author: dkattan

.github/workflows/ci.yml

@@ -35,8 +35,16 @@ jobs:
 
       - name: Compile TypeScript
         run: npm run compile
+      - name: Setup virtual display (Linux only)
+        if: matrix.os == 'ubuntu-latest'
+        run: sudo apt-get update && sudo apt-get install -y xvfb
       - name: Run tests
-        run: npm test
+        run: |
+          if [ "${{ matrix.os }}" = "ubuntu-latest" ]; then
+            xvfb-run --auto-servernum --server-args='-screen 0 1280x1024x24' npm test;
+          else
+            npm test;
+          fi
         env:
           CI: true
 

package.json

@@ -412,7 +412,7 @@
     "build:dist": "node esbuild.js --production",
     "package": "npm run build:dist",
     "compile-tests": "tsc -p ./",
-    "pretest": "npm run lint && npm run compile-tests",
+    "pretest": "npm run lint && npm run compile-tests && npm run build:dist",
     "lint": "eslint",
     "test": "node -e \"try{require('fs').rmSync('./.vscode-test/user-data/DIP',{recursive:true,force:true});}catch(e){}\" && npx vscode-test",
     "test:coverage": "npm run compile-tests && npx vscode-test --coverage"