Your Test Coverage Is Lying to You
📰 Dev.to · Alejandro Sosa
Learn how a custom Go CLI tool reveals the truth about test coverage by mapping it to business features, not just files, and why this matters for accurate assessment
Action Steps
- Build a custom CLI tool using Go to trace dependencies from React routes to SQL queries
- Map test coverage to business features instead of just files
- Run the tool on a production codebase to identify gaps in test coverage
- Configure the tool to output results in a human-readable format
- Test the tool with different input scenarios to ensure accuracy
Who Needs to Know This
Developers and QA engineers on a team can benefit from this approach to get a more accurate understanding of test coverage and its impact on business features
Key Insight
💡 Test coverage metrics can be misleading if only measured by file, and mapping coverage to business features provides a more accurate understanding of the codebase
Share This
🚨 Your test coverage might be lying to you! 🚨 Learn how to build a custom CLI tool to map test coverage to business features and get a more accurate picture
Key Takeaways
Learn how a custom Go CLI tool reveals the truth about test coverage by mapping it to business features, not just files, and why this matters for accurate assessment
Full Article
I built a Go CLI that traces dependencies from React route to SQL query and maps test coverage to business features — not files. Here's what it found on a 2,100-file production codebase.
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