Framework and Benchmark for Code-Driven Agentic Testing in Web Development
- Source
- arxiv.org
- Author
- Bin Hong, Zhenchao Zhang, Jiyuan He, Kai Zhang, Zhenya Huang
- Date

Context
An AI tester can recognize that a web application is faulty while missing the defects that need fixing. CATTest measures those abilities separately across 102 AI-generated web applications with annotated bugs. Its testing writes Playwright browser-automation code, examines feedback and explores the application to produce bug reports.
The strongest reported bug-discovery score was 42.57 out of 100, calculated from per-project coverage of annotated defects. Some models scored much better at simply flagging faulty applications. That gap explains why a convincing overall verdict is insufficient evidence of thorough testing: developers need reports that identify the particular failures they can reproduce and repair.
- AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
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