chore: Add tests

.github/workflows/tests.yml

@@ -0,0 +1,32 @@
+name: Tests
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: ['**']
+
+jobs:
+  test:
+    name: Node v${{ matrix.node-version }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        node-version: [18.x]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+          node-version: ${{ matrix.node-version }}
+          os: ${{ matrix.os }}
+          cache: 'npm'
+      - name: Install packages for project
+        run: npm ci
+      - name: Run tests
+        run: |
+          cd test
+          npm start

package.json

@@ -6,7 +6,7 @@
     "lint": "./bin/lint"
   },
   "scripts": {
-    "test": "exit 0"
+    "test": "cd test && npm start"
   },
   "exports": {
     "./eslint-config": "./eslint-common-config.js",

test/package.json

@@ -0,0 +1,7 @@
+{
+  "name": "test",
+  "private": true,
+  "scripts": {
+    "start": "npm i ../ && npx @diplodoc/lint install"
+  }
+}