feat: add coverage tooling

.github/workflows/ci.yml

@@ -3,7 +3,7 @@
 
 name: CI
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   build:
@@ -23,6 +23,11 @@ jobs:
       - run: yarn
       - run: yarn lint
       - run: yarn build
-      - run: yarn test
+      - run: yarn test:coverage
+      - name: Coveralls
+        uses: coverallsapp/github-action@master
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
         env:
-          CI: true
+          CI: true
+

.gitignore

@@ -2,6 +2,7 @@
 /dist
 /storybook-static
 .DS_Store
+/coverage
 
 # Firebase
 firebase-debug.log*

README.md

@@ -11,6 +11,8 @@
 </p>
 <br/>
 
+[![Coverage Status](https://coveralls.io/repos/github/CartoDB/carto-react-lib/badge.svg?branch=master)](https://coveralls.io/github/CartoDB/carto-react-lib?branch=master)
+
 This is the official CARTO library for working with React. It is used by the [CARTO for React](https://github.com/CartoDB/cra-template-carto) templates.
 
 There is a Storybook guide with the UI components and how to use them at [CARTO for React - UI Components](https://storybook-react.carto.com/)

package.json

@@ -9,6 +9,7 @@
     "lint:fix": "eslint 'src/**/*.{js,jsx}' --fix",
     "test": "jest",
     "test:watch": "jest --watch",
+    "test:coverage": "jest --collectCoverage --",
     "format": "npx prettier --write \"**/*.+(js|jsx|json|md)\"",
     "storybook": "start-storybook -c src/ui/.storybook -p 6006",
     "build-storybook": "build-storybook -c src/ui/.storybook",