Add coverage reporting (#4)

* Add tests coverage reporting
* Add badges

.gitignore

@@ -62,3 +62,5 @@ typings/
 
 # Compiled module
 /es/
+
+/test/.coverage/

.travis.yml

@@ -2,3 +2,6 @@ language: node_js
 
 node_js:
   - "lts/*"
+
+script:
+  - npm test -- --coverage --collectCoverageFrom='src/**/*.js' --coverageReporters=text-lcov | coveralls

README.md

@@ -1,3 +1,9 @@
+[![npm package][npm-image]][npm-url] 
+[![Coverage Status][coverage-image]][coverage-url] 
+[![node][node]][node-url] 
+[![Build Status][travis-image]][travis-url] 
+[![Dependencies Status][david-image]][david-url]
+
 # Fest templates loader for Webpack
 This Webpack loader compiles [Fest](https://github.com/mailru/fest) templates.
 
@@ -37,3 +43,14 @@ module.exports = {
 |:--:|:--:|:-----:|:----------|
 |**`beautify`**|`{Boolean}`|`true`|Beautify compiled template|
 |**`module`**|`{String}`|`es`|Compiled template module type. `es` or `cjs`.|
+
+[npm-image]:https://img.shields.io/npm/v/fest-webpack-loader.svg
+[npm-url]:http://npmjs.org/package/fest-webpack-loader
+[coverage-image]:https://coveralls.io/repos/github/ogonkov/fest-webpack-loader/badge.svg?branch=master
+[coverage-url]:https://coveralls.io/github/ogonkov/fest-webpack-loader?branch=master
+[node]: https://img.shields.io/node/v/fest-webpack-loader.svg
+[node-url]: https://nodejs.org
+[travis-image]:https://travis-ci.org/ogonkov/fest-webpack-loader.svg?branch=master
+[travis-url]:https://travis-ci.org/ogonkov/fest-webpack-loader
+[david-image]:https://david-dm.org/ogonkov/fest-webpack-loader/status.svg
+[david-url]:https://david-dm.org/ogonkov/fest-webpack-loader

jest.config.js

@@ -1,3 +1,4 @@
 module.exports = {
-    testEnvironment: 'node'
+    testEnvironment: 'node',
+    coverageDirectory: 'test/.coverage'
 };

package.json

@@ -12,6 +12,7 @@
     "@babel/core": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
     "babel-jest": "^24.8.0",
+    "coveralls": "^3.0.9",
     "eslint": "^6.0.1",
     "fest": "^0.12.1",
     "jest": "^24.8.0",
@@ -25,7 +26,7 @@
     "node": ">= 8.9.0"
   },
   "scripts": {
-    "pretest": "eslint src",
+    "pretest": "rm -rf test/.coverage && eslint src",
     "test": "jest",
     "build": "babel src --out-dir=es",
     "preversion": "npm test",