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Carl Meyer a04375173c
[ty] fix unpacking a type alias with detailed tuple spec (#19981) 
## Summary

Fixes https://github.com/astral-sh/ty/issues/1046

We special-case iteration of certain types because they may have a more
detailed tuple-spec. Now that type aliases are a distinct type variant,
we need to handle them as well.

I don't love that `Type::TypeAlias` means we have to remember to add a
case for it basically anywhere we are special-casing a certain kind of
type, but at the moment I don't have a better plan. It's another
argument for avoiding fallback cases in `Type` matches, which we usually
prefer; I've updated this match statement to be comprehensive.

## Test Plan

Added mdtest.
2025-08-18 17:54:05 -07:00
..
corpus [ty] fix deferred name loading in PEP695 generic classes/functions (#19888) 2025-08-13 15:51:59 -07:00
mdtest [ty] fix unpacking a type alias with detailed tuple spec (#19981) 2025-08-18 17:54:05 -07:00
primer [ty] Add precise inference for indexing, slicing and unpacking NamedTuple instances (#19560) 2025-08-13 15:19:44 +00:00
README.md

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/ty_test/README.md for documentation of this test format.