async def test_9c48(http_client):
    """
    MAY NOT allow executing mutations on GET requests
    """
    response = await http_client.query(
        method="get",
        headers={"Accept": "application/graphql-response+json"},
        query="mutation { __typename }",
    )
    assert 400 <= response.status_code <= 499

    MAY NOT allow executing mutations on GET requests
    
tests/http/test_graphql_over_http_spec.py