MDL-37774 Add unit test to illustrate the problem with the trailing slash
MDL-37774 Add unit test to illustrate the problem with the trailing slash

The patch introduces two new tests for moodle1_file_manager::migrate_directory().
The second test with the trailing slash reveals the trouble here.
The expected behaviour is that the method would deal with the trailing
slash. Debugging message for the developer should be displayed though.

dilawar/moodle