Stop Guessing Memory: How to Automate LangChain Memory Testing and Catch 80% of Multi-Turn Failures

2 a.m. The customer Slack channel explodes — the support bot just asked for the same order number three times in a row. A frustrated user screams, “Do you have amnesia?” After digging through the code and the prompt, everything looks fine. Only then do we discover that ConversationBufferMemory silently dropped context in one of the turns. The LLM had no idea what was said earlier. Right then I thought: if we could catch this memory loss automatically in CI, we’d never ship a black eye like this.