Author: Patrick Yip This class is to set the resource(fixture) for the test cases. Especially for the test case that need to simulate the action of file system. Such as test cases for doc processor need to simulate operation of file move. So, before the test cases run. Call the restore method to copy the needed resource to the tmp folder of fixture folder. After the test case finished, delete the temp folder by calling the clean method. The purpose of this restore and clean is to filter the .svn file create by subversion that is not needed for the test cases to run.