test(coverage): add test coverage with overalls

Author: yilinfengluo

.gitignore

@@ -57,3 +57,4 @@ typings/
 # dotenv environment variables file
 .env
 
+.coveralls.yml

.travis.yml

@@ -11,6 +11,9 @@ before_script:
 script:
   - npm run test
 
+after_success:
+  - npm run coverage
+
 #指定分支，只有指定的分支提交时才会运行脚本
 branches:
   only:

README.md

@@ -1,6 +1,7 @@
 ## koa2-validation
 [![npm](https://img.shields.io/npm/dt/koa2-validation.svg)](https://www.npmjs.com/package/koa2-validation)
 [![Build Status](https://api.travis-ci.org/gedennis/koa2-validation.svg?branch=master&name=dennis)](https://travis-ci.org/gedennis/koa2-validation)  
+[![Coverage Status](https://coveralls.io/repos/github/gedennis/koa2-validation/badge.svg?branch=master)](https://coveralls.io/github/gedennis/koa2-validation?branch=master)  
 koa2-validation is a koa2 middleware to validate the request with Joi. Support `body`, `params`, `query` for Now.  
 Inspired by [express-validation](https://github.com/andrewkeig/express-validation).
 

package.json

@@ -4,7 +4,9 @@
   "description": "A koa2 middleware to validate the request with Joi.",
   "main": "index.js",
   "scripts": {
-    "test": "ava -v",
+    "test": "nyc ava -v",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "coverage_local": "nyc report --reporter=html",
     "release": "standard-version"
   },
   "ava": {
@@ -36,9 +38,11 @@
   },
   "devDependencies": {
     "ava": "^0.19.0",
+    "coveralls": "^2.13.1",
     "koa": "^2.3.0",
     "koa-bodyparser": "^4.2.0",
     "koa-router": "^7.2.1",
+    "nyc": "^11.1.0",
     "standard-version": "^4.2.0",
     "supertest": "^3.0.0"
   }