from mem0.configs import prompts


def test_get_update_memory_messages():
    retrieved_old_memory_dict = [{"id": "1", "text": "old memory 1"}]
    response_content = ["new fact"]
    custom_update_memory_prompt = "custom prompt determining memory update"
    
    ## When custom update memory prompt is provided
    ##
    result = prompts.get_update_memory_messages(retrieved_old_memory_dict, response_content, custom_update_memory_prompt)
    assert result.startswith(custom_update_memory_prompt)
    
    ## When custom update memory prompt is not provided
    ##
    result = prompts.get_update_memory_messages(retrieved_old_memory_dict, response_content, None)
    assert result.startswith(prompts.DEFAULT_UPDATE_MEMORY_PROMPT)