Upload inputs not being properly validated

[Nnonexistent]

If a client provides invalid input for the Upload field (e.g. string or number), strawberry don't raise any errors and executes the related resolver.

Describe the Bug

@strawberry.type
class Mutation:
    @strawberry.mutation
    def mutation(self, file: Upload) -> bool:
        return True

mutation { mutation (value: "just-a-string") }

If client will provide invalid input for the Upload field for such a mutation, the mutation will be executed without any errors.

Test that shows the issue

Ordinary fields are validated fine, but Upload fields are not validated

import pytest
from pytest_mock import MockerFixture
from starlette.testclient import TestClient

import strawberry
from strawberry.file_uploads import Upload
from tests.fastapi.app import create_app


@strawberry.type
class Query:
    empty: None = None


@strawberry.input
class SimpleInput:
    value: bool


@strawberry.input
class UploadInput:
    value: Upload


@pytest.mark.parametrize(
    ("input_value_annotation", "graphql_type", "bad_variable"),
    [
        (bool, "Boolean", "not a boolean"),
        (SimpleInput, "SimpleInput", "just a string"),
        (SimpleInput, "SimpleInput", {"value": "not a boolean"}),
        (UploadInput, "UploadInput", "just a string"),
        (UploadInput, "UploadInput", {"value": "not an upload"}),  # this is currently failing
        (Upload, "Upload", "not an upload"),  # this is currently failing
    ],
)
async def test_mutation_input_validation(
    mocker: MockerFixture, input_value_annotation, graphql_type, bad_variable
):
    mock = mocker.Mock()

    def resolver(value) -> bool:
        mock()
        return True

    # dynamic addition of input field annotation:
    resolver.__annotations__ = {"value": input_value_annotation}

    @strawberry.type
    class Mutation:
        mutation = strawberry.mutation(resolver, graphql_type=bool)

    app = create_app(schema=strawberry.Schema(Query, mutation=Mutation))

    response = TestClient(app).post(
        "/graphql",
        json={
            "query": f"mutation($value: {graphql_type}!) {{ mutation(value: $value) }}",
            "variables": {"value": bad_variable},
        },
    )

    response_json = response.json()
    assert mock.call_count == 0
    assert response_json["data"] is None
    assert response_json["errors"] is not None

System Information

• Operating system: Linux
• Strawberry version (if applicable): 0.235.2

Additional Context

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