flagsmith-testing

Overview

Flagsmith (open-source, also SaaS at flagsmith.com) supports three test-friendly modes per docs.flagsmith.com/clients/server-side:

1. Offline mode with LocalFileHandler - loads a downloaded environment.json snapshot; zero network.
2. Local-evaluation mode - fetches environment + flags periodically, evaluates locally without per-request network.
3. Default flag handler - programmatic fallback for any flag (mock-flag-only mode).

Offline mode is the default choice for tests; local-evaluation and default_flag_handler detail live in references/flagsmith-modes.md.