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ISTQB Foundation Level 4.0 Course Notes

The Value of White-box Testing

  1. Thorough Coverage
  2. Error Localization
  3. Optimization and Performance
  4. Security enhancement
  5. Regression testing
  6. Complements black box testing

My own additions:

  • Fast. Unit (Component)

Provides a measure of code coverage via statement and branch testing.

Someone, whether it’s a Developer, SDET, or QA needs to be doing white-box testing. Otherwise defects will be found through tests later in the SDLC which will then take more time to fix and verify.