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Douglas Creager 4fad15805b
[ty] Use first matching constructor overload when inferring specializations (#18204) 
This is a follow-on to #18155. For the example raised in
https://github.com/astral-sh/ty/issues/370:

```py
import tempfile

with tempfile.TemporaryDirectory() as tmp: ...
```

the new logic would notice that both overloads of `TemporaryDirectory`
match, and combine their specializations, resulting in an inferred type
of `str | bytes`.

This PR updates the logic to match our other handling of other calls,
where we only keep the _first_ matching overload. The result for this
example then becomes `str`, matching the runtime behavior. (We still do
not implement the full [overload resolution
algorithm](https://typing.python.org/en/latest/spec/overload.html#overload-call-evaluation)
from the spec.)
2025-05-19 15:12:28 -04:00
..
mdtest [ty] Use first matching constructor overload when inferring specializations (#18204) 2025-05-19 15:12:28 -04:00
primer [ty] Understand classes that inherit from subscripted Protocol[] as generic (#17832) 2025-05-09 17:39:15 +01:00
README.md Rename Red Knot (#17820) 2025-05-03 19:49:15 +02:00

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