🧪 Cut 90% of Tests Without Losing Coverage? Yes — With Pairwise Testing

Test matrices exploding?

Pairwise testing (aka 2-wise combinatorial) is still the sharpest tool in 2025 to shrink test suites without shrinking quality.

🔍 What’s inside the guide:

• Why 96% of bugs hide in 1–2 parameter interactions
• How pairwise testing keeps coverage auditable and CI fast
• Real-world case: dynamic pricing test matrix cut from 216 → 24
• Handling constraints like “crypto + Seoul = ❌” with grace

Bonus: tool tips, matrix sanity checks, and audit-friendly practices.

💡 If you ship with flags, configs, or feature switches — this is your new favorite method: https://medium.com/code-your-own-path/pairwise-testing-2025-cut-your-test-suite-by-90-without-cutting-quality-649991df7c71