Turns out that #5456 had a nasty side effect. Session hooks are called
when pytest is run with `--collect-only` (even though no tests are
actually run in this case), and Visual Studio Code periodically runs
`pytest --collect-only` in order to learn what tests exist in the
project. As a result, it keeps restarting the services and restoring the
database in the background.
Work around this by skipping all logic in the hooks if `--collect-only`
is in the options.
OPA can take some time to load rules, but our tests don't wait for OPA,
and start right after the server is loaded.
Sometimes it works, but in other times the tests may fail because OPA is
still loading the rules.
This PR allows to wait for OPA during the test suite startup.
`pathlib` improves code readability and type safety. It is already used
in some of the tests; convert all remaining `os.path` usage to `pathlib`
equivalents.
* Move the test file share contents to tests/share
This way, it can be reused between tests.
* cvat-sdk: Fix creating tasks with non-local files
Forcing the `Content-Type` for the `upload_data` API call to
`multipart/form-data` does not work, because the current logic for
converting Python values to parts (`ApiClient._convert_body_to_post_params`)
does not encode them in a way that Django REST Framework can understand (it
JSON-encodes each part).
Fortunately, we don't actually need to do that, since when we create a task
with non-local files, we don't need to upload any files, and so we can just
post the original JSON, so do just that.
I couldn't add a test for the remote image case, because CVAT rejects all URLs
with non-public IP addressses. However, I did test this case manually.
Roman Donchenko
Maxim Zhiltsov
Nikita Manovich
Kirill Sizov
Andrey Zhavoronkov
Maria Khrustaleva