import pytest

from genesis.inference.exceptions import (
    LLMError,
    LLMNetworkError,
    LLMNotConfiguredError,
    LLMResponseError,
    LLMTimeoutError,
)


def test_error_hierarchy():
    assert issubclass(LLMNetworkError, LLMError)
    assert issubclass(LLMTimeoutError, LLMError)
    assert issubclass(LLMNotConfiguredError, LLMError)
    assert issubclass(LLMResponseError, LLMError)


def test_error_message_roundtrip():
    e = LLMTimeoutError("timeout!")
    assert str(e) == "timeout!"


def test_error_code_class_attributes():
    # error_code 与 api-design §7 错误码表一一对应（机器可读事实源）
    assert LLMError.error_code is None
    assert LLMTimeoutError.error_code == "LLM_TIMEOUT"
    assert LLMNetworkError.error_code == "LLM_NETWORK_ERROR"
    assert LLMNotConfiguredError.error_code == "LLM_NOT_CONFIGURED"
    assert LLMResponseError.error_code == "LLM_PARSE_ERROR"


def test_error_code_inherited_by_instance():
    e = LLMNetworkError("network")
    assert e.error_code == "LLM_NETWORK_ERROR"