What is Unit Testing?

• Unit testing is the testing of an individual unit or group of related units.

• It falls under the class of white box testing.
• It is often done by the programmer to test that the unit he/she has implemented is producing expected output against given input.
• Typically done by the programmer and not by testers, as it requires detailed knowledge of the internal program design and code.

Benefits of Unit Testing:

• Finds problems early
• Facilitates change
• Simplifies integration
• Documentation
• Design