Russ Cox • 4/25/2025

Differential Coverage for Debugging

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The article explains 'differential coverage,' a debugging technique where you compare code coverage from passing and failing tests to isolate the code unique to the failure. It provides a concrete example using Go's testing and coverage tools to find a bug inserted into the math/big package, showing how to generate and visualize the differential profile.

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#debugging #testing #code coverage
Differential Coverage for Debugging

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