4efe7c1376
- 32 failing tests covering all 7 StorageBackend methods on both backends - Verifies CloudConnectionError reason attribute (token_expired / invalid_grant) - Verifies CHUNK_SIZE == 10 MB (Pitfall 6 prevention) - Verifies shared CloudConnectionError import across backends - Verifies _ensure_valid_token skips refresh on non-expired tokens - Verifies _ensure_valid_token raises CloudConnectionError on invalid_grant