import pytest


@pytest.fixture
def my_fixture(some_other_fixture_which_provides_connection):
    response = some_other_fixture_which_provides_connection.some_endpoint()
    return generator(response.body)


def generator(response_body):
    for value in response_body:
        yield value


@pytest.mark.parametrize('response_value', my_fixture)
def test_response(response_value):
    assert response_value.is_OK