当开始测试Ruby测试程序时，出现we are sorry something wrong, 然后检查log文件夹里面的development.log文件发现如下
错误信息，“no such file to load sqlite3 rails”。出现错误的原因是sqlite3-ruby版本本身的bug，解决的方法是：
Suggestion is DO NOT using sqlite3-ruby version =1.2.2, try to using version 1.2.1. I fixed it this same problem, through: # gem uninstall sqlite3-ruby # gem install sqlite3-ruby -v=1.2.1