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5 Commits

Author SHA1 Message Date
InSync
11cfe2ea8a [red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890) 
## Summary

Resolves #15695, rework of #15704.

This change modifies the Mdtests framework so that:

* Paths must now be specified in a separate preceding line:

	`````markdown
	`a.py`:

	```py
	x = 1
	```
	`````

If the path of a file conflicts with its `lang`, an error will be
thrown.

* Configs are no longer accepted. The pattern still take them into
account, however, to avoid "Unterminated code block" errors.
* Unnamed files are now assigned unique, `lang`-respecting paths
automatically.

Additionally, all legacy usages have been updated.

## Test Plan

Unit tests and Markdown tests.

---------

Co-authored-by: Carl Meyer <carl@astral.sh>
 2025-02-04 08:27:17 +01:00
Alex Waygood
3125332ec1 [red-knot] Format mdtest snippets with the latest version of black (#15819) 2025-01-29 23:05:43 +00:00
David Peter
1feb3cf41a [red-knot] Use Unknown | T_inferred for undeclared public symbols (#15674) 
## Summary

Use `Unknown | T_inferred` as the type for *undeclared* public symbols.

## Test Plan

- Updated existing tests
- New test for external `__slots__` modifications.
- New tests for external modifications of public symbols.
 2025-01-24 12:47:48 +01:00
Shaygan Hooshyari
03ff883626 Display Union of Literals as a Literal (#14993) 
## Summary

Resolves #14988

Display union of Literals like other type checkers do.

With this change we lose the sorting behavior. And we show the types as
they appeared. So it's deterministic and tests should not be flaky.
This is similar to how Mypy [reveals the
type](https://mypy-play.net/?mypy=latest&python=3.12&gist=51ad03b153bfca3b940d5084345e230f).

In some cases this makes it harder to know what is the order in revealed
type when writing tests but since it's consistent after the test fails
we know the order.

## Test Plan

I adjusted mdtests for this change. Basically merged the int and string
types of the unions.

In cases where we have types other than numbers and strings like this
[one](https://github.com/astral-sh/ruff/pull/14993/files#diff-ac50bce02b9f0ad4dc7d6b8e1046d60dad919ac52d0aeb253e5884f89ea42bfeL51).
We only group the strings and numbers as the issue suggsted.

```
def _(flag: bool, flag2: bool):
    if flag:
        f = 1
    elif flag2:
        f = "foo"
    else:
        def f() -> int:
            return 1
    # error: "Object of type `Literal[1, "foo", f]` is not callable (due to union elements Literal[1], Literal["foo"])"
    # revealed: Unknown | int
    reveal_type(f())
```

[pyright
example](https://pyright-play.net/?code=GYJw9gtgBALgngBwJYDsDmUkQWEMoAySMApiAIYA2AUNQCYnBQD6AFMJeWgFxQBGYMJQA0UDlwBMvAUICU3alCWYm4nouWamAXigBGDUpKUkqzmimHNYqLoBEwQXavGAziQXXlDVa1lQAWgA%2BTBQYTy9rEBIYAFcQFH0rAGIoMnAQXjsAeT4AKxIAY3wwJngEEigAAyJSCkoAbT1RBydRYABdKsxXKBQwfEKqTj5KStY6WMqYMChYlCQwROMSCBIw3tqyKiaO0S36htawOw7ZZ01U6IA3EioSOl4AVRQAa36Ad0SAH1CYKxud0ozHKJHYflk1CAA)

[mypy
example](https://mypy-play.net/?mypy=latest&python=3.12&gist=31c8bdaa5521860cfeca4b92841cb3b7)

---------

Co-authored-by: Carl Meyer <carl@oddbird.net>
 2025-01-08 00:58:38 +00:00
Alex Waygood
1389cb8e59 [red-knot] Emit an error if a bare Annotated or Literal is used in a type expression (#14973) 2024-12-15 02:00:52 +00:00