Unit Testing

Unit testing is a software development practice where individual parts of a program—called "units"—are tested to ensure they work correctly. Each unit, such as a function or method, is checked in isolation to verify that it performs as expected. This helps catch errors early in the development process, making it easier to fix issues before the entire program is completed. By ensuring that each small piece functions correctly, unit testing contributes to the overall reliability and quality of the software, ultimately leading to better user experiences and easier maintenance.