Merge pull request #5 from brunolm/test-coverage

Add test coverage scripts and config

Author: brunolm

README.md

@@ -11,4 +11,6 @@ Each Pull Request will contain explanation and steps taken to complete a feature
 ## Tests
 
 - [Setup tests](https://github.com/brunolm/react-how-to/pull/1)
+- [Setup test coverage](https://github.com/brunolm/react-how-to/pull/5)
+
 - [Add project on Travis CI](https://github.com/brunolm/react-how-to/pull/2)

package.json

@@ -11,8 +11,16 @@
     "start": "react-scripts-ts start",
     "build": "react-scripts-ts build",
     "test": "react-scripts-ts test --env=jsdom",
+    "coverage": "npm test -- --coverage",
     "eject": "react-scripts-ts eject"
   },
+  "jest": {
+    "collectCoverageFrom": [
+      "!src/(index|specHelper).tsx",
+      "!src/(setupTests|registerServiceWorker).ts",
+      "src/**/*.{ts,tsx}"
+    ]
+  },
   "devDependencies": {
     "@types/enzyme": "^3.1.4",
     "@types/enzyme-adapter-react-16": "^1.0.1",