Agentic systems are non-deterministic and tool-dependent, so traditional unit tests alone aren’t enough. Here’s a testing approach that keeps agents reliable without blocking iteration.
Deterministic Unit Tests for Tools and Parsing
Test the parts you control: tool input/output parsing, prompt templates, and response validators. Use fixed inputs and assert on structure and allowed values. These tests run fast and catch regressions in glue code.
Scenario and Evaluation Tests
Run agents against curated scenarios (user intents, edge cases, safety cases) and evaluate outputs with rubrics or model-as-judge. Track metrics over time: success rate, latency, tool-use correctness. This gives you a regression signal as you change prompts or models.
Guardrails and Integration Tests
Test guardrails in isolation: input filters, output filters, and fallback behavior. Then run integration tests against a real or sandboxed environment to ensure the full flow (user → agent → tools → response) stays within policy and doesn’t leak data or call the wrong APIs.
Layering unit, scenario, and guardrail tests keeps agentic AI predictable and safe in production.
Written by Lumina Software. Questions about anything here? Book a call
