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How to Type Check a Mock with pyright in Python

Shows how pyright validates a mock function against a TypedDict and Callable signature before runtime.

from typing import TypedDict, Callable


class User(TypedDict):
    id: int
    name: str


def get_user_name(user_id: int, get_user: Callable[[int], User]) -> str:
    user = get_user(user_id)
    return user["name"]


def mock_get_user(user_id: int) -> User:
    return {"id": user_id, "name": f"User {user_id}"}


if…

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