DI with testing

example_di.py

def some_func(redis_client) -> dict:
    data = redis_client.get(...)
    # logic...
    return data

  
class FakeRedisClient:
    _storage = dict()

    def get(key):
        return self._storage[key]

      
def test_some_func() -> None:
    result = some_func(FakeRedisClient())
    assert result

example_globals.py

redis_client = Redis(...)

def some_func() -> dict:
    data = redis_client.get(...)
    # logic...
    return data

  
def test_some_func() -> None:
    # Как мне тут проестить функцию не поднимая редис?