Black Box Testing and White Box Testing are software testing methods with distinct focuses:
- Black Box Testing:
- Focus: Tests the application’s functionality without knowing the internal code.
- Performed by: Testers.
- Techniques: Equivalence Partitioning, Boundary Value Analysis.
- Examples: Functional, System, Acceptance Testing.
- White Box Testing:
- Focus: Examines internal code, logic, and structure.
- Performed by: Developers.
- Techniques: Code Coverage, Path Testing, Unit Testing.
- Examples: Unit, Integration Testing.
Key Difference: Black box evaluates “what” the system does; white box tests “how” it works internally. Both are complementary for ensuring robust software quality.