Commit graph

24 commits

Author SHA1 Message Date
David Peter
d296f602e7
[red-knot] Merge Markdown code blocks inside a single section (#15950)
## Summary

Allow for literate style in Markdown tests and merge multiple (unnamed)
code blocks into a single embedded file.

closes #15941

## Test Plan

- Interactively made sure that error-lines were reported correctly in
  multi-snippet sections.
2025-02-05 22:26:15 +01:00
Alex Waygood
c816542704
[red-knot] Fix some instance-attribute TODOs around ModuleType (#15974) 2025-02-05 15:33:37 +00:00
Alex Waygood
2ebb5e8d4b
[red-knot] Make Symbol::or_fall_back_to() lazy (#15943) 2025-02-05 14:51:02 +00:00
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
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
David Peter
15394a8028
[red-knot] MDTests: Do not depend on precise public-symbol type inference (#15691)
## Summary

Another small PR to focus #15674 solely on the relevant changes. This
makes our Markdown tests less dependent on precise types of public
symbols, without actually changing anything semantically in these tests.

Best reviewed using ignore-whitespace-mode.

## Test Plan

Tested these changes on `main` and on the branch from #15674.
2025-01-23 13:51:33 +00:00
David Peter
1e790d3885
[red-knot] Port 'deferred annotations' unit tests to Markdown (#15686)
## Summary

- Port "deferred annotations" unit tests to Markdown
- Port `implicit_global_in_function` unit test to Markdown
- Removed `resolve_method` and `local_inference` unit tests. These seem
  like relics from a time where type inference was in it's early stages.
  There is no way that these tests would fail today without lots of other
  things going wrong as well.

part of #13696
based on #15683 

## Test Plan

New MD tests for existing Rust unit tests.
2025-01-23 11:45:05 +00:00
David Peter
6771b8ebd2
[red-knot] Pure instance variables declared in class body (#15515)
## Summary

This is a small, tentative step towards the bigger goal of understanding
instance attributes.

- Adds partial support for pure instance variables declared in the class
  body, i.e. this case:
  ```py
  class C:
      variable1: str = "a"
      variable2 = "b"

  reveal_type(C().variable1)  # str
  reveal_type(C().variable2)  # Unknown | Literal["b"]
  ```
- Adds `property` as a known class to query for `@property` decorators
- Splits up various `@Todo(instance attributes)` cases into
  sub-categories.

## Test Plan

Modified existing MD tests.
2025-01-17 10:48:20 +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
github-actions[bot]
53c7ef8bfe
Sync vendored typeshed stubs (#14977)
Co-authored-by: typeshedbot <>
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>
2024-12-15 01:02:41 +00:00
Alex Waygood
c361cf66ad
[red-knot] Precise inference for __class__ attributes on objects of all types (#14921) 2024-12-11 17:30:34 +00:00
InSync
15fe540251
Improve mdtests style (#14884)
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>
2024-12-10 13:05:51 +00:00
Douglas Creager
918358aaa6
Migrate some inference tests to mdtests (#14795)
As part of #13696, this PR ports a smallish number of inference tests
over to the mdtest framework.
2024-12-06 11:19:22 +01:00
David Peter
47f39ed1a0
[red-knot] Meta data for Type::Todo (#14500)
## Summary

Adds meta information to `Type::Todo`, allowing developers to easily
trace back the origin of a particular `@Todo` type they encounter.

Instead of `Type::Todo`, we now write either `type_todo!()` which
creates a `@Todo[path/to/source.rs:123]` type with file and line
information, or using `type_todo!("PEP 604 unions not supported")`,
which creates a variant with a custom message.

`Type::Todo` now contains a `TodoType` field. In release mode, this is
just a zero-sized struct, in order not to create any overhead. In debug
mode, this is an `enum` that contains the meta information.

`Type` implements `Copy`, which means that `TodoType` also needs to be
copyable. This limits the design space. We could intern `TodoType`, but
I discarded this option, as it would require us to have access to the
salsa DB everywhere we want to use `Type::Todo`. And it would have made
the macro invocations less ergonomic (requiring us to pass `db`).

So for now, the meta information is simply a `&'static str` / `u32` for
the file/line variant, or a `&'static str` for the custom message.
Anything involving a chain/backtrace of several `@Todo`s or similar is
therefore currently not implemented. Also because we currently don't see
any direct use cases for this, and because all of this will eventually
go away.

Note that the size of `Type` increases from 16 to 24 bytes, but only in
debug mode.

## Test Plan

- Observed the changes in Markdown tests.
- Added custom messages for all `Type::Todo`s that were revealed in the
tests
- Ran red knot in release and debug mode on the following Python file:
  ```py
  def f(x: int) -> int:
      reveal_type(x)
  ```
Prints `@Todo` in release mode and `@Todo(function parameter type)` in
debug mode.
2024-11-21 09:59:47 +01:00
David Peter
f1f3bd1cd3
[red-knot] Review remaining 'possibly unbound' call sites (#14284)
## Summary

- Emit diagnostics when looking up (possibly) unbound attributes
- More explicit test assertions for unbound symbols
- Review remaining call sites of `Symbol::ignore_possibly_unbound`. Most
of them are something like `builtins_symbol(self.db,
"Ellipsis").ignore_possibly_unbound().unwrap_or(Type::Unknown)` which
look okay to me, unless we want to emit additional diagnostics. There is
one additional case in enum literal handling, which has a TODO comment
anyway.

part of #14022

## Test Plan

New MD tests for (possibly) unbound attributes.
2024-11-11 20:48:49 +01:00
Charlie Marsh
626f716de6
Add support for resolving metaclasses (#14120)
## Summary

I mirrored some of the idioms that @AlexWaygood used in the MRO work.

Closes https://github.com/astral-sh/ruff/issues/14096.

---------

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
2024-11-06 15:41:35 -05:00
Alex Waygood
df45a0e3f9
[red-knot] Add MRO resolution for classes (#14027) 2024-11-04 13:31:38 +00:00
github-actions[bot]
7c2da4f06e
Sync vendored typeshed stubs (#14030)
Co-authored-by: typeshedbot <>
Co-authored-by: Alex Waygood <alex.waygood@gmail.com>
2024-11-01 10:51:56 +00:00
Carl Meyer
b8acadd6a2
[red-knot] have mdformat wrap mdtest files to 100 columns (#14020)
This makes it easier to read and edit (and review changes to) these
files as source, even though it doesn't affect the rendering.
2024-10-31 21:00:51 +00:00
David Peter
53fa32a389
[red-knot] Remove Type::Unbound (#13980)
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## Summary

- Remove `Type::Unbound`
- Handle (potential) unboundness as a concept orthogonal to the type
system (see new `Symbol` type)
- Improve existing and add new diagnostics related to (potential)
unboundness

closes #13671 

## Test Plan

- Update existing markdown-based tests
- Add new tests for added/modified functionality
2024-10-31 20:05:53 +01:00
Alex Waygood
d2c9f5e43c
[red-knot] Fallback to attributes on types.ModuleType if a symbol can't be found in locals or globals (#13904) 2024-10-29 10:59:03 +00:00
Alex Waygood
3eb454699a
[red-knot] Format mdtest Python snippets more concisely (#13905) 2024-10-24 11:09:31 +00:00
Alex Waygood
36cb1199cc
[red-knot] Autoformat mdtest Python snippets using blacken-docs (#13809) 2024-10-19 15:57:06 +01:00
aditya pillai
ed4a0b34ba
[red-knot] don't include Unknown in the type for a conditionally-defined import (#13563)
## Summary

Fixes the bug described in #13514 where an unbound public type defaulted
to the type or `Unknown`, whereas it should only be the type if unbound.

## Test Plan

Added a new test case

---------

Co-authored-by: Carl Meyer <carl@astral.sh>
2024-10-16 13:46:03 -07:00