from app.core.llm.llm_service import (
    fallback_translate_chinese,
    is_valid_translation,
    normalize_translation_text,
    translate_chinese_identifier,
)


def test_normalize_translation_text_strips_chinese():
    assert normalize_translation_text("测试宁波数据加工") == ""
    assert normalize_translation_text('"Ningbo Data Processing"') == "ningbo_data_processing"


def test_fallback_translate_ningbo_data_processing():
    result = fallback_translate_chinese("测试宁波数据加工")
    assert result == "ningbo_data_processing_test"
    assert is_valid_translation(result)


def test_translate_chinese_identifier_uses_fallback_when_llm_unavailable(monkeypatch):
    def _raise(*args, **kwargs):
        raise ValueError("DeepSeek API Key 未配置")

    monkeypatch.setattr(
        "app.core.llm.llm_service.create_llm_client",
        _raise,
    )
    result = translate_chinese_identifier("测试宁波数据加工")
    assert result == "ningbo_data_processing_test"