93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
import asyncio
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import pytest
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from nanobot.providers.base import LLMProvider, LLMResponse
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class ScriptedProvider(LLMProvider):
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def __init__(self, responses):
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super().__init__()
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self._responses = list(responses)
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self.calls = 0
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async def chat(self, *args, **kwargs) -> LLMResponse:
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self.calls += 1
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response = self._responses.pop(0)
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if isinstance(response, BaseException):
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raise response
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return response
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def get_default_model(self) -> str:
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return "test-model"
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@pytest.mark.asyncio
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async def test_chat_with_retry_retries_transient_error_then_succeeds(monkeypatch) -> None:
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provider = ScriptedProvider([
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LLMResponse(content="429 rate limit", finish_reason="error"),
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LLMResponse(content="ok"),
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])
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delays: list[int] = []
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async def _fake_sleep(delay: int) -> None:
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delays.append(delay)
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monkeypatch.setattr("nanobot.providers.base.asyncio.sleep", _fake_sleep)
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response = await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
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assert response.finish_reason == "stop"
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assert response.content == "ok"
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assert provider.calls == 2
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assert delays == [1]
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@pytest.mark.asyncio
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async def test_chat_with_retry_does_not_retry_non_transient_error(monkeypatch) -> None:
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provider = ScriptedProvider([
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LLMResponse(content="401 unauthorized", finish_reason="error"),
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])
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delays: list[int] = []
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async def _fake_sleep(delay: int) -> None:
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delays.append(delay)
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monkeypatch.setattr("nanobot.providers.base.asyncio.sleep", _fake_sleep)
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response = await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
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assert response.content == "401 unauthorized"
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assert provider.calls == 1
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assert delays == []
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@pytest.mark.asyncio
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async def test_chat_with_retry_returns_final_error_after_retries(monkeypatch) -> None:
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provider = ScriptedProvider([
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LLMResponse(content="429 rate limit a", finish_reason="error"),
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LLMResponse(content="429 rate limit b", finish_reason="error"),
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LLMResponse(content="429 rate limit c", finish_reason="error"),
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LLMResponse(content="503 final server error", finish_reason="error"),
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])
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delays: list[int] = []
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async def _fake_sleep(delay: int) -> None:
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delays.append(delay)
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monkeypatch.setattr("nanobot.providers.base.asyncio.sleep", _fake_sleep)
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response = await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
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assert response.content == "503 final server error"
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assert provider.calls == 4
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assert delays == [1, 2, 4]
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@pytest.mark.asyncio
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async def test_chat_with_retry_preserves_cancelled_error() -> None:
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provider = ScriptedProvider([asyncio.CancelledError()])
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with pytest.raises(asyncio.CancelledError):
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await provider.chat_with_retry(messages=[{"role": "user", "content": "hello"}])
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