Add test coverage

.github/workflows/ci.yml

@@ -12,15 +12,15 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x]
+        node-version: [14.x]
 
     steps:
     - uses: actions/checkout@v2
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v1
       with:
         node-version: ${{ matrix.node-version }}
-    - run: npm i
+    - run: npm ci
     - run: npm run build
     - run: npm run lint
     - run: npm test

.github/workflows/coverage.yml

@@ -0,0 +1,22 @@
+name: Test Coveralls
+
+on: ["push", "pull_request"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-node@v1
+      with:
+        node-version: 14.x
+
+    - name: Coverage
+      run: |
+        npm ci
+        npm run coverage
+
+    - name: Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -1,5 +1,5 @@
 # Pull Request auto merge action
-[![](https://github.com/davideviolante/pr-automerge-action/workflows/Node.js%20CI/badge.svg)](https://github.com/DavideViolante/pr-automerge-action/actions?query=workflow%3A%22Node.js+CI%22) [![Maintainability](https://api.codeclimate.com/v1/badges/60f9b3a6b4177a0bfe77/maintainability)](https://codeclimate.com/github/DavideViolante/pr-automerge-action/maintainability) [![Donate](https://img.shields.io/badge/paypal-donate-179BD7.svg)](https://www.paypal.me/dviolante)
+[![](https://github.com/davideviolante/pr-automerge-action/workflows/Node.js%20CI/badge.svg)](https://github.com/DavideViolante/pr-automerge-action/actions?query=workflow%3A%22Node.js+CI%22) [![Coverage Status](https://coveralls.io/repos/github/DavideViolante/pr-automerge-action/badge.svg?branch=master)](https://coveralls.io/github/DavideViolante/pr-automerge-action?branch=master) [![Maintainability](https://api.codeclimate.com/v1/badges/60f9b3a6b4177a0bfe77/maintainability)](https://codeclimate.com/github/DavideViolante/pr-automerge-action/maintainability) [![Donate](https://img.shields.io/badge/paypal-donate-179BD7.svg)](https://www.paypal.me/dviolante)
 
 GitHub Action to automatically merge pull requests when some conditions are met.