Unit testing vs Functional testing

What is unit testing? It is a testing method where an individual component or each unit is tested. This testing method aims to ensure that the individual components or units are working as expected. The source code is broken down into various units and every unit is validated to ascertain whether it is working as expected. In this manner, bugs can be detected early in the development process and thus get fixed. Developers will also know the working of each unit, which in turn helps them make modifications faster. What is functional testing? It is a testing method where a software system or application is validated to ascertain whether the software is built according to the functional requirements. Each function is verified to know whether it works against the functional specifications or requirements. The software application’s functionality is tested by providing appropriate input and ascertaining whether the output is as expected. Those defects are found in the system that ...