Add test workflow (#42)

.github/workflows/test.yml

@@ -0,0 +1,37 @@
+name: Test
+on:
+  push:
+    branches: [$default-branch]
+    paths:
+      - src/**
+      - test/**
+      - "*.js"
+      - "*.ts"
+      - "*.json"
+      - .github/workflows/test.yml
+  pull_request:
+    branches: [$default-branch]
+    paths:
+      - src/**
+      - test/**
+      - "*.js"
+      - "*.ts"
+      - "*.json"
+      - .github/workflows/test.yml
+concurrency:
+  group: test-${{ github.ref }}
+  cancel-in-progress: true
+jobs:
+  test:
+    strategy:
+      matrix:
+        node-version: ["16", "18", "20"]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: npm
+      - run: npm ci
+      - run: npm test