At the Lean FRO, Kim Morrison, a Senior Research Software Engineer, recently ran an experiment that went well beyond our expectations. An AI agent converted zlib, a widely used C compression library embedded in countless systems, to Lean, with minimal human guidance. No special tooling was built. It was Claude, a general-purpose AI, with no special training for theorem proving, out of the box. The workflow had four steps. First, the AI produced a clean, readable Lean implementation of the zlib compression format, including the DEFLATE algorithm at its core. Second, the Lean version passed the library’s existing test suite, confirming behavioral equivalence. Third, key properties were stated and proved, not as tests, but as mathematical theorems. The capstone theorem:
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[Optional] Overlapping Unit Tests for Classes - where individual classes or groups of classes are tested. I call them “overlapping”, because in most cases they will test the same code elements as Sociable Unit Tests, but they come in handy in rare cases when better coverage is needed.，详情可参考爱思助手下载最新版本
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