Testing - GCSE Computer Science Definition

Testing in computer science is the process of checking if a computer program or system works correctly. It involves finding and fixing mistakes, or "bugs," to make sure the program does what it's supposed to do. When you test a program, you run it with different inputs to see if it gives the right outputs. Testing ensures that the software is reliable and meets its requirements. There are different types of testing, such as unit testing, where small pieces of a program are tested on their own, and system testing, where the whole program is tested together. Testing is important because it helps make sure the software is of high quality and ready to be used by people.