Addition of test code
I made it because there was a test code insufficient in Redmine Code Review plugin.
It is thought it is useful for the improvement of the c0 coverage, and makes it.
The patch file assumes and makes application to revision No 551.
It would be greatly appreciated if this patch file for your help becomes it.
The version of Redmine that I am using is 1.0.0.
The patch file confirms the operation in this version.