How to authenticate with django-grahql-jwt in a graphene-django GraphQLTestCase?

I'm trying to test my mutation according to graphene django documentation. the mutation works with @login_required decorator and there's a problem because any method of login to test doesn't work. I tried with self.client.login, self.client.force_login. I've even made a tokenAuth mutation, and hardcoded some credentials there and it also doesn't work; the user is still Anonymous.

def test_create_member_mutation(self):
    response = self.query(
        '''
        mutation createMember($firstName: String) {
            createMember(firstName: $firstName) {
                member {
                    id
                }
            }
        }
        ''',
        op_name='createMember',
        variables={'firstName': 'Foo'}
    )

    self.assertResponseNoErrors(response)

This is how I've solved it in my tests:

You can pass a token that has been made for the test user in the headers keyword argument of self.query():

from django.contrib.auth import get_user_model
from graphene_django.utils import GraphQLTestCase
from graphql_jwt.shortcuts import get_token


class ExampleTests(GraphQLTestCase):

    def test_create_member_mutation(self):
        user = get_user_model().objects.get(pk=1)
        token = get_token(user)
        headers = {"HTTP_AUTHORIZATION": f"JWT {token}"}

        graphql = '''
            mutation createMember($firstName: String) {
                createMember(firstName: $firstName) {
                    member {
                        id
                    }
                }
            }
        '''

        response = self.query(
            graphql,
            op_name='createMember',
            variables={'firstName': 'Foo'},
            headers=headers,
        )
        self.assertResponseNoErrors(response)