Use Jest instead jasmine-node for testing

.gitignore

@@ -4,4 +4,4 @@ logs
 npm-debug.log*
 node_modules
 .idea
-postcss-px-to-em-master
+yarn.lock

README.md

@@ -161,7 +161,7 @@ add to your `postcss.config.js`
 ```js
 module.exports = {
   plugins: {
-    ...
+    // ...
     'postcss-px-to-viewport': {
       // options
     }
@@ -171,9 +171,9 @@ module.exports = {
 
 ## Running the tests
 
-In order to run tests, you need to install `jasmine-node` globally:
+In order to run tests, you need to install dev-packages:
 ```
-$ npm install jasmine-node -g
+$ npm install
 ```
 Then run the tests via npm script:
 ```

README_CN.md

@@ -161,7 +161,7 @@ gulp.task('css', function () {
 ```js
 module.exports = {
   plugins: {
-    ...
+    // ...
     'postcss-px-to-viewport': {
       // options
     }
@@ -171,9 +171,9 @@ module.exports = {
 
 ## 测试
 
-为了跑测试案例, 你需要全局安装 `jasmine-node` :
+为了跑测试案例，您需要安装开发套件:
 ```
-$ npm install jasmine-node -g
+$ npm install
 ```
 然后输入下面的命令:
 ```

package.json

@@ -11,12 +11,6 @@
   "bugs": "https://github.com/evrone/postcss-px-to-viewport/issues",
   "homepage": "https://github.com/evrone/postcss-px-to-viewport",
   "main": "index.js",
-  "scripts": {
-    "test": "jasmine-node spec"
-  },
-  "devDependencies": {
-    "jasmine-node": "~1.11.0"
-  },
   "keywords": [
     "css",
     "units",
@@ -30,8 +24,17 @@
     "postcss",
     "postcss-plugin"
   ],
+  "scripts": {
+    "test": "jest spec/*.spec.js"
+  },
   "dependencies": {
-    "object-assign": ">=4.0.1",
+    "object-assign": ">=4.0.1"
+  },
+  "devDependencies": {
+    "jest": "^25.4.0",
+    "postcss": ">=5.0.2"
+  },
+  "peerDependencies": {
     "postcss": ">=5.0.2"
   }
 }

spec/px-to-viewport.spec.js

@@ -1,11 +1,9 @@
-// Jasmine unit tests
 // To run tests, run these commands from the project root:
-// 1. `npm install -g jasmine-node`
-// 2. `jasmine-node spec`
+// 1. `npm install`
+// 2. `npm test`
 
 /* global describe, it, expect */
 
-'use strict';
 var postcss = require('postcss');
 var pxToViewport = require('..');
 var basicCSS = '.rule { font-size: 15px }';