使用karma做多浏览器的UI测试

avalon1.6开发得差不多，这次使用先进的开发理念进行开发，比如模块化，单元测试什么。。。

ui测试是重要的一环，之前用阿里的totoro，但打开浏览器不方便。于是从webdrieverio, nightwatch，一直找到karma！

karma的官网尤其烂，我搞了好久才能运行起来

用到的npm模块有：

karma
karma-mocha
karma-mocha-reporter
karma-firefox-launcher
karma-chrome-launcher
karma-opera-launcher
karma-safari-launcher

在你项目下添加karma.config.js

module.exports = function (config) {
    config.set({
        basePath: '',
        frameworks: ['mocha'],
        files: [
            {pattern: 'node_modules/chai/chai.js', include: true},
            'karma/index.js'
        ],
        exclude: [],
        reporters: ['mocha'],
        mochaReporter: {
            output: 'autowatch',
            colors: {
                success: 'green',
                info: 'bgGreen',
                warning: 'cyan',
                error: 'bgRed'
            }
        },
        port: 9876,
        colors: true,
        logLevel: config.LOG_INFO,
//autoWatch为true,Karma将自动执行测试用例
        autoWatch: true,
//http://www.cnblogs.com/NetSos/p/4371075.html
        browsers: ['Opera','Chrome', 'Firefox',"Safari"],
        singleRun: false,
        plugins: [
            'karma-mocha',
            'karma-mocha-reporter',
            'karma-firefox-launcher',
            'karma-chrome-launcher',
            'karma-opera-launcher',
            'karma-safari-launcher'
        ]
    })
}

然后我们在此项目中建立一个叫karma的目录，里面建index.js

/**
 * Created with IntelliJ IDEA.
 * User: shenyanchao
 * Date: 3/5/13
 * Time: 5:51 PM
 * To change this template use File | Settings | File Templates.
 */

var assert = chai.assert;
var should = chai.should();

describe('Array', function(){

    before(function(){
        console.log('this called in before all');
    });
    beforeEach(function(){
        console.log('invoke before each method');
    });

    afterEach(function(){
        console.log('invoke after each method');
    });
    after(function(){
        console.log('this called in after all');
    });

    describe('#indexOf()', function(){

        it('should return -1 when the value is not present', function(){
            console.log('invoke one assert');
            assert.equal(-1, [1,2,3].indexOf(5));
            assert.equal(-1, [1,2,3].indexOf(0));

        });
    });

    describe('#indexOf()', function(){

        it('should return -1 when the value is not present', function(){
            console.log('invoke second should');
            [1,2,3].indexOf(5).should.equal(-1);
            [1,2,3].indexOf(0).should.equal(-1);
        });
    });
})

然后执行karma start命令就能看到效果

大家还看不懂，可以看这里