Comparisons·14 June 2026 · 6 min read
Black-box vs white-box vs grey-box: what testers actually use
The three 'box' terms are interview trivia until you use them right: they describe how much of the code you can see when designing a test, which decides what you'll catch. Most functional QA is quietly grey-box — here's why.
manual-qatest-designfundamentalscomparison