Test a CrewAI Project How to test crews and flows deterministically, without API keys, and how to debug real runs with events and traces. Verified against crewai 1.15.22 and 1.15.23 on 2026-10-01. Live-tested with real LLMs on 2026-10-01. Run first; if the major/minor differs, re-verify the version-sensitive rows with the skill. --- 1. Why tests need a stub LLM A real LLM gives different text on every run, costs money, and needs a key. Every Agent without an explicit resolves to and fails at kickoff with when no key is set, so a CI run with no secrets cannot even start. You cannot assert on o…