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Developer finds 13 bugs in own tool by testing it on 13 open source repos

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A developer built a tool that generates architecture diagrams from code repositories, with every connection traced to a specific file, line, and commit. To stress-test it, they ran the tool against 13 repositories it had never encountered, and each one exposed a distinct bug. The bugs spanned multiple languages including Java, Go, and Rust, revealing issues such as misidentified package ownership, self-referencing imports, and hardcoded directory paths that caused thousands of false gaps. One misconfiguration in a Rust repository alone produced 3,896 unresolved references, representing 27% of all facts in that codebase. The developer concluded that tools designed to read external codebases must be tested against external codebases, and that a tool which loudly reports errors is far more trustworthy than one that silently drops what it cannot resolve.

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Developer finds 13 bugs in own tool by testing it on 13 open source repos · ShortSingh