refactor file status unit tests (#1499)
refactor file status unit tests (#1499)

* refactor file status unit tests

one method per check
tests in ltcl_file_status2 now successful

* more tests

add helper class

sbcgua/abapGit,larshp/abapGit,EduardoCopat/abapGit,larshp/abapGit,sbcgua/abapGit,EduardoCopat/abapGit