Library › Book 3 › Building a Production Test Harness
Building a Production Test Harness
10.1🔒From Guardrails to a Complete HarnessThe five guardrails define the boundaries. The production harness is the complete implementation that enforces them while providing a clean…
10.2🔒The ConstrainedTestHarness Class
10.3🔒Running Multiple Tests with the HarnessIn practice, you run many tests through the same harness. Each test gets its own step/token counters but shares the harness configuration.
10.4🔒Harness ObservabilityA production harness must be observable. Every action, decision, and guardrail check should be logged.
10.5🔒Harness Profiles for Different Test Types
10.6🔒Error Recovery in the HarnessThe harness should handle agent failures gracefully:
10.7🔒Career Translation- Built production ConstrainedTestHarness enforcing all five guardrails with pre-action validation, supporting 500+ daily agent test…
10.8🔒Q&AInterview Depth CheckPrompt: You have a test suite of 50 agentic tests. Telemetry shows that 5 tests consume 60% of the total token budget. What do you do? What…