The Difference between Component Testing and Unit Testing
In this section, we are going to discuss the difference between component testing and Unit testing based on the various parameters.
As we understood in the earlier section of software testing, all types of software testing have their features and functionality in order to test the application or software.
Before getting into the difference between component testing and unit testing, we will briefly introduce Component and Unit testing.
What is Component Testing?
It is one of the essential types of software testing in which the accessibility of each component is verified.
It can be implemented individually, that is, the separation from the remaining system. However, it has relied on the model of the preferred life cycle.
The execution of components testing makes sure that all the application component is working correctly and according to the requirements.
In order to execute the component testing, all the components or modules require to be in the individual and manageable state. And all the related components of the software should be user-understandable.
As we can see in the following image of the component testing process:
It is executed by the developers, where they should perform component testing before they move on to develop another component.
Once the identification of the defects happens in component testing, either the developer can fix all of them before moving to another component, or he/she can substitute between the fixing and development alternatively.
For more information about Component Testing, refers to the following link:
What is Unit Testing?
It is also a part of software testing and is used whenever the application is ready and given to the Test engineer. He/she will start checking every module of the application independently or one by one. This process is known as Unit testing.
In unit testing, the term unit is a single testable part of a software system and it is tested during the development stage of the application.
Unit testing is a testing method that tests all the independent modules to verify if there is an issue by the developer himself. It is correlated with the functional correctness of the independent modules.
For more information about Unit Testing, refers to the following link:
The key differences between Component Testing and Unit Testing
The critical difference between both testings is that the test engineers implement the Component Testing whereas the developers or SDET experts implement the Unit Testing.
Let's understand some other key differences between Component Testing and Unit testing:
Component Testing VS Unit Testing
Let us see the following comparison table to understand the essential differences between Component Testing and Unit Testing.
After seeing all the essential differences between Component Testing and Unit testing, we can conclude that component testing is quite similar to unit testing. Still, it is performed at a higher level of integration and in the application setting, not just in the context of that unit/program as in unit testing.
Once the unit testing is implemented successfully, then only we can execute the Component testing.
In Component Testing, the error identification is a bit challenging; on the other hand, Unit Testing is performed after each development process. Therefore, in-unit testing error identification is a bit easy as compared to component testing.
If the Component testing is performed appropriately, then there are fewer bugs in the next stage; thus, it is conducted before unit testing, assessing the programs.
At last, we can say that component testing is essential for finding the errors and bugs to ensure that each component of an application works resourcefully. And it is always suggested to carry out the component test before proceeding with the unit testing.