Tag
differential-testing
- Apr 24, 2026 Shadow Traffic and Differential Comparison Before a Cutover How mirrored requests expose behavioural differences between two implementations, why response bodies rarely compare cleanly, and what a comparison harness must normalise. cloud infrastructure
- Jan 6, 2026 Test Oracles and Where Expected Values Come From Why deciding whether an observed result is correct is harder than producing the input, and the five practical oracle constructions with their failure modes. software engineering
- Sep 15, 2025 Differential Testing Between a Legacy System and Its Replacement How to run old and new implementations on the same inputs, normalise what is legitimately different, and classify divergences without an external specification to appeal to. software architecture
- Mar 3, 2024 Divergent Duplicates and the Cost of Two Truths How two copies of one business rule drift apart without any build failing, why the drift is expensive to resolve, and how to detect divergence before deciding which copy is right. software architecture