The Coverage Loop: Turning Free AI Tokens into Verified C++ Tests

说明与用途

使用 AI 生成的测试通过反馈循环实现高覆盖率。

问题

Generated tests from free AI models often lack assertions and coverage, leading to ineffective unit tests.

结果

The loop reached 90% line coverage for the string utility by iteratively refining AI-generated tests based on coverage feedback.

工作流

• Send header to AI model asking for tests
• Compile and run the generated tests
• Run gcov to measure line coverage
• Extract missing lines from gcov output
• Feed missing line hints back to the AI and repeat until coverage plateaus

证据

Five steps. Each one is small.

来源

The target: a small C++ string utility. The goal: reach 90% line coverage with generated tests.

来源