InQuery inherited FieldQuery.__hash__, which hashes the pattern directly.
A list pattern raises `unhashable type: 'list'`, which broke the
smartplaylist `splupdate` command whenever a `playlist:` query was configured.
Sorting by a field whose declared type is nullable (its null value is
`None`, e.g. `NullInteger`/`NullFloat`) raised `TypeError: '<' not
supported between instances of ...` when the field was present on some
objects but missing on others, because `FieldSort.sort` compared `None`
against real values.
Group missing values together in the sort key so they are never compared
against present ones: they are ordered first when sorting ascending and
last when descending, matching SQLite's default ordering of NULLs used by
the fast `FixedFieldSort` path.
Fixes#3461.
Co-Authored-By: Claude <noreply@anthropic.com>
- Removing the coverage omit configuration exposed unused branches, helpers, and
fixtures across the test suite.
- Delete that redundant logic and simplify affected tests while preserving their
behavior.
- Consolidate duplicate sort test coverage with parametrized cases.
- Keep missing-field and mixed-presence behavior covered while reducing repeated
assertions.
- Replace duplicate direct MultipleSort checks with parametrized query-string
cases covering single-field, multi-field, fixed, flex, and computed sort
behavior.
- Reduce test repetition while keeping the same sort behavior coverage.
