diff --git a/.travis.yml b/.travis.yml
index a804745..76d852d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 language: node_js
 sudo: true
+addons:
+  sauce_connect:
+    username: 'leolin'
+    access_key: '2d69d455-a8ff-45bd-8a93-5ba373ddf6a3'
 node_js:
   - '4.4.2'
 services: mongodb
diff --git a/karma.conf.js b/karma.conf.js
index 33f2faf..6282a00 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -2,86 +2,155 @@
 // Generated on Sun Jul 31 2016 18:14:21 GMT+0800 (CST)
 
 module.exports = function(config) {
-  config.set({
+    var customLaunchers = {
+        // the cool kids
+        sl_chrome: {
+            base: 'SauceLabs',
+            browserName: 'chrome',
+            platform: 'Windows 7'
+        },
+        sl_firefox: {
+            base: 'SauceLabs',
+            browserName: 'firefox'
+        },
+        sl_mac_safari: {
+            base: 'SauceLabs',
+            browserName: 'safari',
+            platform: 'OS X 10.10'
+        },
+        // ie family
+        sl_ie_8: {
+            base: 'SauceLabs',
+            browserName: 'internet explorer',
+            platform: 'Windows 7',
+            version: '8'
+        },
+        sl_ie_9: {
+            base: 'SauceLabs',
+            browserName: 'internet explorer',
+            platform: 'Windows 7',
+            version: '9'
+        },
+        sl_ie_10: {
+            base: 'SauceLabs',
+            browserName: 'internet explorer',
+            platform: 'Windows 8',
+            version: '10'
+        },
+        sl_ie_11: {
+            base: 'SauceLabs',
+            browserName: 'internet explorer',
+            platform: 'Windows 8.1',
+            version: '11'
+        },
+        // mobile
+        sl_ios_safari: {
+            base: 'SauceLabs',
+            browserName: 'iphone',
+            platform: 'OS X 10.9',
+            version: '8.1'
+        },
+        sl_android: {
+            base: 'SauceLabs',
+            browserName: 'android',
+            platform: 'Linux',
+            version: '4.2'
+        }
+    };
+
+    if (!process.env.SAUCE_USERNAME) {
+        process.env.SAUCE_USERNAME = 'leolin';
+        process.env.SAUCE_ACCESS_KEY = '2d69d455-a8ff-45bd-8a93-5ba373ddf6a3';
+    }
 
-    // base path that will be used to resolve all patterns (eg. files, exclude)
-    basePath: '',
+    config.set({
 
-    client: {
-      mocha: {
-        timeout: 6000
-      }
-    },
+        // base path that will be used to resolve all patterns (eg. files, exclude)
+        basePath: '',
 
-    // frameworks to use
-    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
-    frameworks: ['mocha', 'chai'],
+        client: {
+            mocha: {
+                timeout: 6000
+            }
+        },
 
+        // mobile emulators are really slow
+        captureTimeout: 300000,
+        browserNoActivityTimeout: 300000,
 
-    // list of files / patterns to load in the browser
-    files: [
-      'test/**/*.test.js'
-    ],
+        // frameworks to use
+        // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+        frameworks: ['mocha', 'chai'],
 
 
-    // list of files to exclude
-    exclude: [
-      '**/*.swp'
-    ],
+        // list of files / patterns to load in the browser
+        files: [
+            'test/**/*.test.js'
+        ],
 
 
-    // preprocess matching files before serving them to the browser
-    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
-    preprocessors: {
-      'test/**/*.test.js': ['webpack']
-    },
+        // list of files to exclude
+        exclude: [
+            '**/*.swp'
+        ],
 
 
-    // test results reporter to use
-    // possible values: 'dots', 'progress'
-    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
-    reporters: ['mocha'],
+        // preprocess matching files before serving them to the browser
+        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+        preprocessors: {
+            'test/**/*.test.js': ['webpack']
+        },
 
 
-    // web server port
-    port: 9876,
+        // test results reporter to use
+        // possible values: 'dots', 'progress'
+        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+        reporters: ['coverage', 'mocha', 'saucelabs'],
 
 
-    // enable / disable colors in the output (reporters and logs)
-    colors: true,
+        // web server port
+        port: 9876,
 
 
-    // level of logging
-    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
-    logLevel: config.LOG_INFO,
+        // enable / disable colors in the output (reporters and logs)
+        colors: true,
 
 
-    // enable / disable watching file and executing tests whenever any file changes
-    autoWatch: false,
+        // level of logging
+        // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+        logLevel: config.LOG_INFO,
 
 
-    // start these browsers
-    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
-    browsers: ['Chrome'],
+        // enable / disable watching file and executing tests whenever any file changes
+        autoWatch: false,
 
 
-    // Continuous Integration mode
-    // if true, Karma captures browsers, runs the tests and exits
-    singleRun: true,
+        sauceLabs: {
+            testName: 'bugReport unit tests',
+            public: 'public'
+        },
 
-    // Concurrency level
-    // how many browser should be started simultaneous
-    concurrency: Infinity,
+        customLaunchers: customLaunchers,
 
-    customLaunchers: {
-      Chrome_travis_ci: {
-        base: 'Chrome',
-        flags: ['--no-sandbox']
-      }
-    }
-  });
+        browsers: Object.keys(customLaunchers),
+
+        // Continuous Integration mode
+        // if true, Karma captures browsers, runs the tests and exits
+        singleRun: true,
+
+        // Concurrency level
+        // how many browser should be started simultaneous
+        concurrency: Infinity
+
+        // customLaunchers: {
+        //     Chrome_travis_ci: {
+        //         base: 'Chrome',
+        //         flags: ['--no-sandbox']
+        //     }
+        // }
+    });
 
-  if(process.env.TRAVIS){
-    config.browsers = ['Chrome_travis_ci'];
-  }
+    // if(process.env.TRAVIS){
+    //     config.browsers = ['Chrome_travis_ci'];
+    // }
 }
diff --git a/package.json b/package.json
index ddc11a3..4f69065 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,7 @@
     "karma-mocha": "^1.1.1",
     "karma-mocha-reporter": "^2.1.0",
     "karma-safari-launcher": "^1.0.0",
+    "karma-sauce-launcher": "^1.0.0",
     "karma-webpack": "^1.7.0",
     "mocha": "^2.5.3",
     "webpack": "^1.13.1"