ci: add test workflow (#16)

.github/workflows/test.yml

@@ -0,0 +1,28 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683  # tag: v4.2.2
+    - name: Setup Node.js
+      uses: actions/setup-node@0a44ba7841725637a19e28fa30b79a866c81b0a6  # tag: v4.0.4
+      with:
+        node-version: 20.x
+    - name: Test
+      run: |
+        yarn --frozen-lockfile
+        yarn build
+        yarn prettier:check
+        yarn test

package.json

@@ -17,7 +17,8 @@
     "start": "node dist/index.js",
     "prepare": "husky install",
     "prettier:check": "prettier --check \"src/**/*.ts\"",
-    "prettier:write": "prettier --write \"src/**/*.ts\""
+    "prettier:write": "prettier --write \"src/**/*.ts\"",
+    "test": "jest"
   },
   "devDependencies": {
     "@babel/core": "^7.14.6",