ruff/crates/ruff_python_parser/tests
Brent Westbrook ab1011ce70
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[syntax-errors] Single starred assignment target (#17024)
Summary
--

Detects starred assignment targets outside of tuples and lists like `*a
= (1,)`.

This PR only considers assignment statements. I also checked annotated
assigment statements, but these give a separate error that we already
catch, so I think they're okay not to consider:

```pycon
>>> *a: list[int] = []
  File "<python-input-72>", line 1
    *a: list[int] = []
      ^
SyntaxError: invalid syntax
```

Fixes #13759

Test Plan
--

New inline tests, plus a new `SemanticSyntaxError` for an existing
parser test. I also removed a now-invalid case from an otherwise-valid
test fixture.

The new semantic error leads to two errors for the case below:

```python
*foo() = 42
```

but this matches [pyright] too.

[pyright]: https://pyright-play.net/?code=FQMw9mAUCUAEC8sAsAmAUEA
2025-03-29 12:35:47 -04:00
..
snapshots [syntax-errors] Single starred assignment target (#17024) 2025-03-29 12:35:47 -04:00
fixtures.rs [syntax-errors] Store to or delete __debug__ (#16984) 2025-03-29 12:07:20 -04:00
generate_inline_tests.rs [syntax-errors] Start detecting compile-time syntax errors (#16106) 2025-03-21 14:45:25 -04:00