[Refactor:System] Fix GitHub Actions test runner (#4)

* fix tests not running

* setup caching

Author: rileyallyn

.github/workflows/lint_and_test.yml

@@ -1,28 +1,38 @@
-name: Lint and Test
+name: Run VSCode Extension Tests
+
 on:
   push:
-    branches:
-      - master
+    branches: [main]
   pull_request:
-    branches:
-      - master
+    branches: [main]
 
 jobs:
   test:
-    runs-on: ubuntu-latest
-
+    strategy:
+      matrix:
+        node-version: [22.x]
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
 
-      - name: Setup Node.js
+      - name: Setup Node.js environment
         uses: actions/setup-node@v4
         with:
-          node-version: "20"
+          node-version: ${{ matrix.node-version }}
           cache: "npm"
 
       - name: Install dependencies
         run: npm ci
-      # Runs both the test and lint commands
-      - name: Run tests
+
+      - name: Compile
+        run: npm run compile
+
+      - name: Run tests (Linux)
+        run: xvfb-run -a npm test
+        if: runner.os == 'Linux'
+
+      - name: Run tests (Windows/Mac)
         run: npm test
+        if: runner.os != 'Linux'