White Box Testing

What is White Box Testing?

White box testing (also called structural or glass-box testing) examines the internal code structure, logic, and paths of an application, rather than just its outputs.

Key Characteristics

• Requires programming knowledge to design test cases based on the code itself.
• Focuses on statement coverage, branch coverage, and path coverage.
• Typically performed by developers during unit and integration testing.
• Helps optimise code, remove dead code, and uncover hidden logical errors.

Common White Box Techniques

• Statement coverage testing.
• Branch/decision coverage testing.
• Path coverage testing.
• Loop testing.