Unit Testing

What is a Unit Test?

• Is a level of software testing where individual units/components of software are tested.
• A unit is the smallest testable part of any software.
• It usually has one (or possibly a few) inputs and a single output.

Function of Unit Tests:

• The purpose is to validate that each unit of the software performs as designed.
• Unit testing should increase confidence in changing and maintaining code.
• Makes code more reusable since this testing validates small chunks of code are functioning as expected.
• The more code that is written without being tested, the more paths the developer has to check for errors.

Test Results:

• The result of this test are used to decide if a unit is stable enough to proceed with further testing and integration. If it fails, halt and fix bugs.

Unit/Component Example:

Reference(s):

• TestingAcronyms
• CommonTestingTerms