Description

This merge request permits to :

• See what file was not found when a NoFileError is launched.
• See what is inside a list of FunctionalTest by being printed as FunctionalTest:test_name instead of <functional test object hexhash>.
• Have a better error message when a functional test fails because of a fatal pylint error (Ie: You're modifying the way functional tests are launched and you broke it).

Previously :

E   Failed: Wrong results for file "abstract_method_py3 ":
E          
E    Unexpected in testdata:
E      1: fatal

With this merge request :

E  AssertionError: Pylint analysis failed because of 'No module named a.abstract_method_py3'
E   assert 'fatal' != 'fatal'
E    +  where 'fatal' = Message(msg_id='F0001', symbol='fatal', msg='No module named a.abstract_method_py3', ...

• Permit to have subdirectory in tests/functional by using os.walk instead of os.listdir. There were hundreds of files all in the same directory and it was beginning to be hard to navigate. Now you can put any tests in any directory inside tests/functional.
• Move functional tests in a directory corresponding to the first letter of their name so navigation between them is more manageable tests/functional/example_tests.py => tests/functional/e/example_test.py. For functional test starting with too move them in a tests/functional/too directory so developers are aware it's a possibility and there aren't any magic going on forcing you to use the one letter directory approach.

Type of Changes