White Box Testing

• Aims to establish that the code works as designed
• Examines the internal structure and implementation of the program
• Target specific paths through the program
• Needs accurate knowledge of the design, implementation and code

Black box testing

• Aims to establish that the code meets the requirements
• Tends to be applied later in the life cycle
• Mainly aimed at finding deviations in behavior from the specification or requirement
• Causes are inputs, effects are observable outputs