New: Add unit tests using Node.js built-in test runner

.github/workflows/tests.yml

@@ -0,0 +1,15 @@
+name: Tests
+on: push
+jobs:
+  default:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@master
+      - uses: actions/setup-node@master
+        with:
+          node-version: 'lts/*'
+          cache: 'npm'
+      - run: npm ci
+      - run: npm test

.gitignore

@@ -0,0 +1,24 @@
+# Dependencies
+node_modules/
+
+# Build artifacts
+dist/
+build/
+*.log
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Testing
+coverage/
+
+# Environment
+.env
+.env.local

package.json

@@ -15,6 +15,9 @@
   "peerDependencies": {
     "adapt-authoring-core": "github:adapt-security/adapt-authoring-core"
   },
+  "scripts": {
+    "test": "node --test tests/**/*.spec.js"
+  },
   "devDependencies": {
     "@semantic-release/git": "^10.0.1",
     "conventional-changelog-eslint": "^6.0.0",