The main aim of unit testing a code is to make sure that the functionality of the code behaves according to the customer requirements under several conditions. This particular approach does allow you to test the internal software parts, which are not exposed typically to the user. Programming unit testing provides the feedback for the code developing teams, in order to lead the team in the right direction.
About the Testing Cycle
Testing phase also allows the testing team to make little alterations in the code if necessary. A software testing engineer has to understand the software test life cycle to understand the testing phase along with different water fall models in the development phase.
In the conventional testing phase, it can be either automated or manual; functionality validation occurs typically after the development of the software. With the help of unit testing, the programmer’s work is validated quickly by testing the software modules. It does allow quick changes to the defects or the eccentricities from the actual design that is detected.
Unit Testing be Fun
Unit testing is done for longer, and there is enough number of automation tools to test the code. These automated tools have gained popularity very quickly.
It is a developer’s friendly tool and programmer can enjoy programming; watch out for the results that are produced after building the code.
Building APIs in the Process
Unit testing offers you a chance in coding against the API/Class, or in the TDD case. Your test cases become template for the future teammates who use API. Unit testing starts at the early phase of code development and it helps you in designing APIs. Finally, it leads to good design and also helps you in choosing good names for the methodologies and also determines the methods that are really necessary.
Unit test allows you to understand the code functionality and it also tells how the code acts in different conditions. Whether unit test fails or succeeds, you will learn few things about the execution of the code.
Unit testing offers you the capability to “Refactor without any Fear”. It means, you are allowed to change the code and functionality of the same after rigorous testing, and develop a bug-free application.
Unit testing enables you to work productively and build great software ultimately free from errors, through rigorous iterations.