Normalize test workflow

Author: valeriansaliou

.github/workflows/node.js.yml

@@ -0,0 +1,40 @@
+on: [push, pull_request]
+
+name: Test and Build
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        node-version: [12.x, 14.x, 16.x]
+      fail-fast: false
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Install NodeJS
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+
+      - name: Verify versions
+        run: node --version && npm --version && node -p process.versions.v8
+
+      - name: Cache build artifacts
+        id: cache-node
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.npm
+            node_modules
+          key: test-${{ runner.os }}-node-${{ matrix.node-version }}
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run tests
+        run: npm test

.github/workflows/test.yml

@@ -102,3 +102,6 @@ dist
 
 # TernJS port file
 .tern-port
+
+# macOS
+.DS_Store