Python
/
ruff
mirror of https://github.com/astral-sh/ruff
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Add is_assignable_to/is_disjoint_from tests

This commit is contained in:
David Peter 2025-12-10 16:37:24 +01:00
parent ab260acb74
commit d500d7eda1
2 changed files with 76 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
crates/ty_python_semantic/resources/mdtest/type_properties/is_assignable_to.md
View File

@ -1338,6 +1338,40 @@ def g3(obj: Foo[tuple[A]]):
f3(obj) f3(obj)
``` ```
## Generic aliases
```py
from typing import final
from ty_extensions import static_assert, is_assignable_to, TypeOf
class GenericClass[T]:
x: T # invariant
static_assert(is_assignable_to(TypeOf[GenericClass], type[GenericClass]))
static_assert(is_assignable_to(TypeOf[GenericClass[int]], type[GenericClass]))
static_assert(is_assignable_to(TypeOf[GenericClass], type[GenericClass[int]]))
static_assert(is_assignable_to(TypeOf[GenericClass[int]], type[GenericClass[int]]))
static_assert(not is_assignable_to(TypeOf[GenericClass[str]], type[GenericClass[int]]))
class GenericClassIntBound[T: int]:
x: T # invariant
static_assert(is_assignable_to(TypeOf[GenericClassIntBound], type[GenericClassIntBound]))
static_assert(is_assignable_to(TypeOf[GenericClassIntBound[int]], type[GenericClassIntBound]))
static_assert(is_assignable_to(TypeOf[GenericClassIntBound], type[GenericClassIntBound[int]]))
static_assert(is_assignable_to(TypeOf[GenericClassIntBound[int]], type[GenericClassIntBound[int]]))
@final
class GenericFinalClass[T]:
x: T # invariant
static_assert(is_assignable_to(TypeOf[GenericFinalClass], type[GenericFinalClass]))
static_assert(is_assignable_to(TypeOf[GenericFinalClass[int]], type[GenericFinalClass]))
static_assert(is_assignable_to(TypeOf[GenericFinalClass], type[GenericFinalClass[int]]))
static_assert(is_assignable_to(TypeOf[GenericFinalClass[int]], type[GenericFinalClass[int]]))
static_assert(not is_assignable_to(TypeOf[GenericFinalClass[str]], type[GenericFinalClass[int]]))
```
## `TypeGuard` and `TypeIs` ## `TypeGuard` and `TypeIs`
`TypeGuard[...]` and `TypeIs[...]` are always assignable to `bool`. `TypeGuard[...]` and `TypeIs[...]` are always assignable to `bool`.

42
crates/ty_python_semantic/resources/mdtest/type_properties/is_disjoint_from.md
View File

@ -666,6 +666,48 @@ static_assert(is_disjoint_from(Path, tuple[Path | None, str, int]))
static_assert(is_disjoint_from(Path, Path2)) static_assert(is_disjoint_from(Path, Path2))
``` ```
## Generic aliases
```toml
[environment]
python-version = "3.12"
```
```py
from typing import final
from ty_extensions import static_assert, is_disjoint_from, TypeOf
class GenericClass[T]:
x: T # invariant
static_assert(not is_disjoint_from(TypeOf[GenericClass], type[GenericClass]))
# TODO: these should not error
static_assert(not is_disjoint_from(TypeOf[GenericClass[int]], type[GenericClass])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericClass], type[GenericClass[int]])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericClass[int]], type[GenericClass[int]]))
static_assert(is_disjoint_from(TypeOf[GenericClass[str]], type[GenericClass[int]]))
class GenericClassIntBound[T: int]:
x: T # invariant
static_assert(not is_disjoint_from(TypeOf[GenericClassIntBound], type[GenericClassIntBound]))
# TODO: these should not error
static_assert(not is_disjoint_from(TypeOf[GenericClassIntBound[int]], type[GenericClassIntBound])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericClassIntBound], type[GenericClassIntBound[int]])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericClassIntBound[int]], type[GenericClassIntBound[int]]))
@final
class GenericFinalClass[T]:
x: T # invariant
# TODO: these should not error
static_assert(not is_disjoint_from(TypeOf[GenericFinalClass], type[GenericFinalClass])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericFinalClass[int]], type[GenericFinalClass])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericFinalClass], type[GenericFinalClass[int]])) # error: [static-assert-error]
static_assert(not is_disjoint_from(TypeOf[GenericFinalClass[int]], type[GenericFinalClass[int]]))
static_assert(is_disjoint_from(TypeOf[GenericFinalClass[str]], type[GenericFinalClass[int]]))
```
## Callables ## Callables
No two callable types are disjoint because there exists a non-empty callable type No two callable types are disjoint because there exists a non-empty callable type