Using the correct function signature for g_file_new_for_path fixes the
tests on s390x.
I do not have the full story on why this failed consistently only on
s390x, but I guess the big endian might have something to play with
this.
Here is how the tests were failing:
```
169s ___________________________ ThumbnailsTest.test_uri ____________________________
169s
169s self = <test.plugins.test_thumbnails.ThumbnailsTest testMethod=test_uri>
169s
169s def test_uri(self):
169s gio = GioURI()
169s if not gio.available:
169s self.skipTest("GIO library not found")
169s
169s > assert gio.uri("/foo") == "file:///" # silent fail
169s E AssertionError: assert '' == 'file:///'
169s E
169s E - file:///
169s
169s test/plugins/test_thumbnails.py:268: AssertionError
```
You can see a full log here [1] and a history of consistent failure
here [2]. Both links are bound to expire at some point, sorry future
archeologist 🤷.
[1]: https://autopkgtest.ubuntu.com/results/autopkgtest-plucky/plucky/s390x/b/beets/20250403_162414_5d1da@/log.gz#S5
[2]: https://autopkgtest.ubuntu.com/packages/beets/plucky/s390x
- Fix imports
- Fix pytest issues
- Do not assign lambda as variable
- Use isinstance instead of type to check type
- Rename ambiguously named variables
- Name custom errors with Error suffix
External Python packages interfacing beets may want to use an in-memory
beets library instance for testing beets-related code.
The `TestHelper` class is very helpful for this purpose.
Previously `TestHelper` was located in the `test/` directory.
Now it is part of `beets` itself (`beets.test.helper.TestHelper`) and
can be easily imported.
This assertion was silently a no-op for years, and it apparently fails.
So since we were not even testing it before, it is at least no worse to
just remove it.
AFAICT, `mock.has_calls` *never* existed. It only started emitting a
warning recently. And for some reason I only see this crop up on
Windows? Truly mysterious.
