Add test coverage script

.github/workflows/build.yml

@@ -32,11 +32,3 @@ jobs:
 
     - name: NPM Build
       run: npm run build
-
-    - name: NPM Test
-      run: npm run test:coverage
-
-    - name: Coveralls
-      uses: coverallsapp/github-action@master
-      with:
-        github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test_coverage.yml

@@ -0,0 +1,35 @@
+name: Test Coverage
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [12.x]
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v1
+
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+
+    - name: NPM Install
+      run: npm ci --no-optional
+      env:
+        CI: true
+
+    - name: NPM Build
+      run: npm run build
+
+    - name: NPM Test Coverage
+      run: npm run test:coverage
+
+    - name: Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}