What is Unit Testing?
It is a testing method that verifies whether the smallest parts of the software work correctly on their own.
Overview
It is the basic testing done to ensure that each function or method works without errors while developing software. You can think of it as checking the pieces of a big puzzle one by one. If small parts are intact, the reliability of the entire system increases.
How it works
Developers write specific test scenarios for each piece of code. These scenarios automatically check whether the code gives the expected output to the expected input. If the test fails, it is immediately clear which small part is at fault.
Where it is used
It is used at the very beginning of the software development process, while the code is written or immediately after it is written.
Commonly confused with
It can be confused with end-to-end testing; While it tests the entire system, unit testing focuses on just one part.
Frequently asked questions
Why should I test every part?
To catch errors very early and prevent major problems that will occur throughout the system later.
Is it done automatically?
Yes, it is usually automated by the developer using testing tools.
Related terms
Related tools
This explanation was written in plain language for TreScout and machine-translated from the Turkish original · the Turkish version prevails. If something looks wrong or missing, write to hello@trescout.com. Read in Turkish →