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Your Go Tests Pass, But Do They Actually Test Anything? An Introduction to Mutation Testing

GitHub Copilot, Cursor, Claude Code — these tools can generate hundreds of lines of Go in seconds. But there's a problem that doesn't get enough attention: AI-generated code ships with AI-generated confidence, not correctness. Your test suite says "all green." Your coverage report says 85%. But how

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r4mimu

📅 Apr 3, 2026·⏱ 14 min read·Dev.to ↗

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https://dev.to/r4mimu/your-go-tests-pass-but-do-they-actually-test-anything-an-introduction-to-mutation-testing-1k9l

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Your Go Tests Pass, But Do They Actually Test Anything? An Introduction to Mutation Testing

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