Black-box Testing

Black-box testing is solely concerned with the functionality of a program. It is not concerned about the internal functionality, only if it takes in A and returns B.

White-box Testing

White-box testing is concerned with testing all aspects (algorithms) of a program. It focuses on identifying and testing all the possible paths of execution through a program.

On each test run, the path of execution is recorded for comparison.

Alpha Testing

Alpha testing is when the product is given to a set of internal employees for general testing and feedback.

Beta Testing

Beta testing is when the product is given to a set of testers (potential users) for general testing and feedback.