language-servers/ruff

mirror of https://github.com/astral-sh/ruff.git synced 2025-09-29 13:25:17 +00:00

David Peter 2ccc9b19a7

[red-knot] Improve match mdtests (#14951 )

## Summary

Minor improvement for the `match` tests to make sure we can't infer
statically whether or not a certain `case` applies.

2024-12-13 09:50:17 +01:00

638 B

Raw Blame History

Pattern matching

With wildcard

def _(target: int):
    match target:
        case 1:
            y = 2
        case _:
            y = 3

    reveal_type(y)  # revealed: Literal[2, 3]

Without wildcard

def _(target: int):
    match target:
        case 1:
            y = 2
        case 2:
            y = 3

    # revealed: Literal[2, 3]
    # error: [possibly-unresolved-reference]
    reveal_type(y)

Basic match

def _(target: int):
    y = 1
    y = 2

    match target:
        case 1:
            y = 3
        case 2:
            y = 4

    reveal_type(y)  # revealed: Literal[2, 3, 4]