bad parameter pass in ospurge/tests/test_utils.py : test_get_resource_classes

[Yves-Gwenael Bourhis]

In ospurge/tests/test_utils.py test_get_resource_classes we have:

    config = "Networks"
    classes = utils.get_resource_classes(config)

It's an error because we expect a list of string (as we can see in ospurge/tests/test_utils.pyi:

    def get_resource_classes(resources: Optional[Iterable[str]]=None) -> List:
        ...

This is confusing for other developers, so the unittest should pass a list of strings instead.

[Yves-Gwenael Bourhis (yves-gwenael-bourhis)]

Fix proposed to branch: master
Review: https://review.openstack.org/643263

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/643263
Committed: https://git.openstack.org/cgit/openstack/ospurge/commit/?id=8a69363f8e00b047f89c74f5a0a89d218f868a42
Submitter: Zuul
Branch: master

commit 8a69363f8e00b047f89c74f5a0a89d218f868a42
Author: Yves-Gwenael Bourhis <email address hidden>
Date: Thu Mar 14 10:39:37 2019 +0100

    Fix test_get_resource_classes parameter passing

    In utils.get_resource_classes we expect a list of strings.
    However we are passing a string.
    The test was succeding by pure luck.
    If we pass something else (such as 'Stacks') we had multiple results.
    This test was confusing for other developers implementing other tests.

    Closes-Bug: #1820033

    Change-Id: I8414b7582d94b199457a01e4916a7e7b6e51edbc