What is Software Testing?What we need to know about software testing?What is the relevance of Software testing?
Published: 2024-03-09 15:15:39

Software testing is the process to identify the bugs in software or examining the behavior of the software by testing through verification and validation.

Verification: This process is to ensure that are we building the product right? The software should confirm to its specification.

Validation: This process is to ensure that are we building the product right? The software should do what the user really requires.

The Software testing is done by two methods as Manual and Automation. The main objective of this software testing is to compare the actual results of function results with the expected functionality and to ensure the software and its applications is bug free and ready for use.

The software tester should know the process to evaluate the functionality of a software application. A tester should have the intend to find the developed software meets the specified requirements or not. The tester has to identify the defects and to ensure that the product is defect free in order to provide a quality product.

The Software Company approach the client or Client company approach the Software company. The Software company first appoint the project manager. The project manager appoints the Domain specialists for various departments. The Domain specialist explain the project details and the client can modify or update or delete the project. 

The project manager next call the technical designers. They implement the software development through SDLC (Software Development Life Cycle).
The SDLC has development phases given below:
1. First phase
2. Planning phase
3. High Level Design phase
4. Low Level Design phase
5. Coding Phase
6. Unit & Integration phase
7. System Testing phase
8. UAT (User Acceptance Testing)
9. Maintenance

To deliver a quality software product based on client requirements we need to have tested in the software development process. The benefits of the software testing is given below:

1. Cost effectiveness
2. Customer Satisfaction
3. User experience
4. Security
5. Product Quality

The Software Testing process is an equally integral part of development and planning. 

There are Three types of testing methods:
1. White-box testing
2. Black-box testing
3. Grey-box testing

White-box testing:

The White-box testing is based on applications internal code structure. In white-box testing, an internal perspective of the system, as well as programming skills, are used to design test cases. This testing is usually done at the unit level.

Black-box testing:

Black Box Testing is a software testing method in which testers evaluate the functionality of the software under test without looking at the internal code structure.

Grey-box testing:

Grey box is the combination of both White Box and Black Box Testing. The tester who works on this type of testing needs to have access to design documents. This helps to create better test cases in this process.

The success of a project due to software testing in Software Engineering had some levels of testing.

Testing Levels:

1.Unit Testing
2.Integration Testing
3.System Testing
4.Acceptance Testing

Unit Testing:

Unit Testing is done to check if the individual modules of the source code are working properly. Therefore testing each and every unit of the application separately by the developer in the developers environment. It is Component Testing or AKA Module Testing.

Integration Testing:

Integration Testing is the process of testing the connectivity or data transfer between a couple of unit tested modules. It is  String Testing or AKA I&T Testing.

System Testing:

Its a black box testing. Testing the full integrated application is also called as an end to end scenario testing. To ensure that the software works in all intended target systems. Verify thorough testing of every input in the application to check for desired outputs.

Acceptance Testing:

To obtain customer sign-off so that software can be delivered and payments received. 3 Types of Acceptance Testing are Alpha, Beta & Gamma Testing.

In most cases, the following professionals are involved in testing a system within their respective capacities:

1.Software Tester
2.Software Developer
3.Project Lead/Manager
4.End User

Finding bugs in a software is the task of the testers, but at the same time, they are domain experts of the particular software. Developers are only responsible for the specific component or
area that is assigned to them but testers understand the overall workings of the software, what the dependencies are, and the impacts of one module on another module.