Mutation Testing for Solidity: The Audit Quality Metric Your Protocol Is Ignoring
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Mutation Testing for Solidity: The Audit Quality Metric Your Protocol Is Ignoring Your test suite shows 100% line coverage. Every function is touched, every branch is hit. Ship it, right? Not so fast. In Q1 2026 alone, DeFi protocols have lost over $137 million to exploits — and many of those protocols had "comprehensive" test suites and professional audits. The uncomfortable truth: line coverage tells you what code your tests execute, not what bugs they would catch. This is where m