--- title: Testing Isn't Enough for AI-Generated Code | daily.dev description: AI-generated code can pass all tests while still implementing the wrong feature — because tests verify behavior, not intent. When an LLM agent fills gaps in a... canonical: https://daily.dev/posts/testing-isn-t-enough-for-ai-generated-code-gxxyu4lyn twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Testing Isn't Enough for AI-Generated Code | daily.dev og:description: AI-generated code can pass all tests while still implementing the wrong feature — because tests verify behavior, not intent. When an LLM agent fills gaps in a... og:url: https://daily.dev/posts/testing-isn-t-enough-for-ai-generated-code-gxxyu4lyn og:image: https://api.daily.dev/og/posts/GxXyU4lyn.png og:image:alt: Testing Isn't Enough for AI-Generated Code og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Testing Isn't Enough for AI-Generated Code **[Aviator Blog](https://daily.dev/sources/aviator-blog)** · 8 min read · 0 upvotes · 0 comments ## Summary AI-generated code can pass all tests while still implementing the wrong feature — because tests verify behavior, not intent. When an LLM agent fills gaps in a prompt with plausible guesses and then writes tests for its own output, the result is green CI with wrong functionality. The solution is a separate verification layer that checks implementation against a human-approved spec with explicit acceptance criteria. Aviator's experiment showed a verification agent checking 65 acceptance criteria in 6 minutes, catching 4 intent mismatches that no test would have flagged. The proposed workflow separates concerns: humans own spec approval, tests own behavior, and automated verification owns agreement between implementation and spec on every revision. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#testing](https://daily.dev/tags/testing), [#cicd](https://daily.dev/tags/cicd), [#ai-coding](https://daily.dev/tags/ai-coding), [#spec-driven-development](https://daily.dev/tags/spec-driven-development) [View this post on daily.dev](https://daily.dev/posts/testing-isn-t-enough-for-ai-generated-code-gxxyu4lyn) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Testing Isn't Enough for AI-Generated Code","url":"https://daily.dev/posts/testing-isn-t-enough-for-ai-generated-code-gxxyu4lyn","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/testing-isn-t-enough-for-ai-generated-code-gxxyu4lyn"},"datePublished":"2026-06-26T06:56:31.681Z","dateModified":"2026-06-26T06:57:52.669Z","description":"AI-generated code can pass all tests while still implementing the wrong feature — because tests verify behavior, not intent. 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