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David Peter 37a0836bd2
[red-knot] `typing.dataclass_transform` (#17445) 
## Summary

* Add initial support for `typing.dataclass_transform`
* Support decorating a function decorator with `@dataclass_transform(…)`
(used by `attrs`, `strawberry`)
* Support decorating a metaclass with `@dataclass_transform(…)` (used by
`pydantic`, but doesn't work yet, because we don't seem to model
`__new__` calls correctly?)
* *No* support yet for decorating base classes with
`@dataclass_transform(…)`. I haven't figured out how this even supposed
to work. And haven't seen it being used.
* Add `strawberry` as an ecosystem project, as it makes heavy use of
`@dataclass_transform`

## Test Plan

New Markdown tests
 		2025-04-22 10:33:02 +02:00
..
mdtest [red-knot] `typing.dataclass_transform` (#17445) 2025-04-22 10:33:02 +02:00
primer [red-knot] `typing.dataclass_transform` (#17445) 2025-04-22 10:33:02 +02:00
README.md [red-knot] document test framework (#13695) 2024-10-10 12:02:01 -07:00

README.md

Markdown files within the mdtest/ subdirectory are tests of type inference and type checking; executed by the tests/mdtest.rs integration test.

See crates/red_knot_test/README.md for documentation of this test format.