Your Test Suite Now Mostly Proves the AI Agrees With Itself

Hung Nguyen Van for DQA AI Solutions Posted on May 30 Your Test Suite Now Mostly Proves the AI Agrees With Itself # ai # coding # softwareengineering # testing Picture a renewal call. The client is happy with the work. Then they ask one fair question. "This feature here. Show me the requirement it came from, and the test that proves it does what we asked." You know the suite is green. You know coverage is high. And you realize you can't actually answer. Not quickly, not with evidence. You can show that the tests pass. You can't show that the code does what the spec said. That gap used to be tiny. In the AI coding era it has quietly become the most expensive thing in your codebase, and almost nobody is measuring it. How a green build became a feeling instead of a fact For most of software's history, the spec, the code, and the test came from different minds. A person wrote the requirement. A person wrote the code. Tests sat there as an outside check. When all three lined up, the agreement meant something, because three independent readings had converged. Now one model reads the spec, writes the code, and writes the test in the same breath. If it misreads the requirement, the code is wrong and the test is wrong in the exact same way. The test passes. Everything is green. The spec is broken and the screen tells you you're fine. A passing test used to mean an independent check agrees the code is correct. Today it usually means the model is consistent with itself. Most of your green suite is the AI grading its own homework. The cruel part is that every tool you'd reach for to catch this is the one the problem already corrupted. Coverage tells you which lines ran, never whether they do the right thing. The test runner confirms the code matches the test, which is the precise thing that's now suspect. Linters check style. Your ticket tracker never touches the code. Each tool reads one side of the triangle and trusts the other two. The one cross-check that ever mattered, a s