The author of a UI auditing tool discovered that seven bugs found in three external websites were actually flaws within the tool itself. These issues stemmed from discrepancies between different parts of the tool's code, such as a counter that mislabeled findings or label-generating functions that didn't align with icon font usage. The author realized that traditional unit tests, which check individual functions, were insufficient for catching these relational bugs. The solution involved implementing tests that compare different components of the program against each other, rather than just testing functions in isolation, and emphasized the value of using the tool on unfamiliar systems to uncover such defects. AI
RANK_REASON The item describes a self-identified bug in a specific software tool, not a broader industry trend or release.
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