test case for working with projects
test has possibility to copy project data into working test dir to prevent changes
in source folders when test makes any changes in content of files
author: Vladimir Voskresensky
change the folder if needed from test folder to subfolder
i.e. if test folder has several folders: for project and libs =>
change dir to subfolder corresponding to project dir
Parameters: projectDir - current project dir folder that should be used as project dir