pairwise-test-coverage

Combinatorial testing that covers all factor pairs in near-minimal test cases.

When to use: Multi-factor systems where exhaustive testing is impractical, state machines, retry/recovery logic, configuration matrices, compatibility testing, any code with 3+ interacting parameters.

When not to use: Single-factor tests (just test each value), two-factor systems (test all combinations directly), UI snapshot tests, type-only changes.

使用貪婪成對矩陣產生器進行組合測試。涵蓋近乎最小的測試案例中的所有因素對。 來源：apankov1/quality-engineering。