graphql_sync success return value is wrong

[mRcSchwering]

graphql_sync first return value is a boolean. The docs say

True when no errors occurred, False otherwise.

I noticed that with ariadne==0.26.1 sometimes this boolean is wrong. Here is an example with wrong input types being used. The response data contains error messages, but the success boolean stays True. Not sure if this is by design or a bug:

from ariadne import MutationType, QueryType, graphql_sync, make_executable_schema

query = QueryType()
mutation = MutationType()


@query.field("dummy")
def resolve_dummy(*_, **kwargs):
    return True


@mutation.field("myTestMutation")
def resolve_my_test_mutation(*_, **kwargs) -> dict:
    inputs = kwargs["input"]
    print(inputs)
    return {"success": True}


SCHEMA = """
type Query {
    dummy: Boolean!
}
type Mutation {
    myTestMutation(input: MyTestMutationInput!): MyTestMutationResult!
}

input MyTestMutationInput {
    name: String!
}

type MyTestMutationResult {
    success: Boolean!
}
"""

def test_wrong_inputs():
    querystr = """
    mutation MyTestMutation($input: MyTestMutationInput!) {
        myTestMutation(input: $input) {
            success
        }
    }
    """
    variables = {"input": {"namee": 12}}
    payload = {"query": querystr, "variables": variables}

    schema = make_executable_schema(
        SCHEMA,
        query,
        mutation,
        convert_names_case=True,
    )
    success, result = graphql_sync(schema=schema, data=payload, debug=True)

    assert success