Adjust the base URL to perform a '/search' instead of attempting to
'/get' specific lyrics where we're unlikely to find lyrics for the
specific combination of album, artist, track names and the duration (see
https://lrclib.net/docs).
Since we receive an array of matching lyrics candidates, rank them by
their duration similarity to the item's duration, and whether they
contain synced lyrics.
Add explicit checks for lyrics texts fetched from the tested sources.
- Introduced `LyricsPage` class to represent lyrics pages for integrated
tests.
- Configured expected lyrics for each of the URLs that are being
fetched.
- Consolidated integrated tests in a new `TestLyricsSources` class.
- Mocked Google Search API to return the lyrics page under test.
Since at least one Backend requires album` and `duration` arguments
(`LRCLib`), the caller (`LyricsPlugin.fetch_item_lyrics`) must always
provide them.
Since they need to provided, we need to enforce this by defining them as
positional arguments.
Why is this important? I found that integrated `LRCLib` tests have been
passing, but they called `LRCLib.fetch` with values for `artist` and
`title` fields only, while the actual functionality *always* provides
values for `album` and `duration` fields too.
When I adjusted the test to provide values for the missing fields,
I found that it failed. This makes sense: Lib `album` and `duration`
filters are strict on LRCLib, so I was not surprised the lyrics could
not be found.
Thus I adjusted `LRCLib` backend implementation to only filter by each
of these fields when their values are truthy.
Modified `search_pairs` function in `lyrics.py` to:
* Firstly strip each of `artist`, `artist_sort` and `title` fields
* Only generate alternatives if both `artist` and `title` are not empty
* Ensure that `artist_sort` is not empty and not equal to artist (ignoring
case) before appending it to the artists
Extended tests to cover the changes.
- Consolidated multiple test cases into parameterized tests for better
readability and maintainability.
- Simplified assertions by comparing lists of actual and expected
artists/titles.
- Added `unexpected_empty_artist` marker to handle cases which
unexpectedly return an empty artist. This seems to be happen when
`artist_sort` field is empty.
- Replaced unittest.mock with pytest fixtures for better test isolation and readability.
- Simplified test cases by using parameterized tests.
- Added `requests-mock` dependency to `pyproject.toml` and `poetry.lock`.
- Removed redundant helper functions and classes.
- Refactored Tekstowo backend to fetch lyrics directly from song pages.
- Added `encode` method to convert artist and title to their URL format,
where non-alphanumeric characters are replaced with underscores.
- Removed the now redundant search functionality and associated tests.
- Simplified `extract_lyrics` method to directly parse lyrics without
any checks.
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.
