import pytest

from app.infrastructure.memory_cache import MemoryCacheAdapter


class FailingCache:
    async def get(self, key: str) -> str:
        raise ConnectionError("redis unavailable")

    async def set(self, key: str, value: str, ex: int | None = None) -> None:
        raise ConnectionError("redis unavailable")


@pytest.mark.asyncio
async def test_cache_read_degrades_without_raising() -> None:
    result = await MemoryCacheAdapter(FailingCache()).get("memory:1")
    assert result.value is None
    assert result.degraded is True


@pytest.mark.asyncio
async def test_cache_write_failure_does_not_block_primary_store() -> None:
    assert not await MemoryCacheAdapter(FailingCache()).set("memory:1", "value")