Add GitHub Actions workflow for running tests

Author: stefanrammo

.github/workflows/test.yml

@@ -0,0 +1,39 @@
+name: Run Jest Tests
+
+on:
+  push:
+    branches: [ '**' ]  # Run on all branches
+  pull_request:
+    branches: [ '**' ]  # Run on PRs targeting any branch
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14, 16, 18]
+
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Set up Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests
+        run: npm test
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-results-${{ matrix.node-version }}
+          path: |
+            coverage/
+            test-results/