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Rails Testing on Autopilot: Building an Agent That Writes What Developers Won't

Mistral AI's Applied AI Proto team, led by Maxime Langelier and Mathis Grosmaitre, details building an autonomous agent that generates Ruby on Rails tests automatically. The post addresses a persistent gap in development workflows: writing tests is known to be valuable yet routinely skipped. By delegating this task to an AI agent, teams can maintain higher test coverage without developer friction.