****参考链接****
XCTest Unit Test
- http://code.tutsplus.com/tutorials/introduction-to-testing-on-ios--cms-22394
- https://sites.google.com/site/epflswengarchive2011/tutorials/unit-testing-in-ios
- http://i-phone-dev.blogspot.com/2013/12/testing-xcode-5-with-xctest-framework.html
- http://meandmark.com/blog/2012/05/introduction-to-unit-testing-with-ocunit/
- http://nshipster.com/xctestcase/
- http://www.preeminent.org/steve/iOSTutorials/XCTest/
The other Unit Test
- http://www.infoq.com/cn/articles/ios-unit-test-1
- http://iiiyu.com/2013/05/23/learning-ios-notes-twenty-three/
- http://www.cocoachina.com/industry/20130724/6667.html
- http://nscookbook.com/2013/03/recipe-18-unit-testing-with-ghunit-cocoapods/
- http://nscookbook.com/2013/03/recipe-18-unit-testing-with-ghunit-cocoapods/
- http://www.uml.org.cn/Test/201408141.asp
