Software Testing Methodologies: QA Models [Updated for 2020]

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Vineet Chaudhary
Vineet Chaudhary
Vineet Chaudhary is a tech junkie with his bachelor in Computer Applications. His interest in the latest technology around the world and his love for writing helped him become a content writer for DinoSoftLabs. In his free time, he spends time with his first love- racing games and simulators.

Article Index

1. Introduction

2. What is Software Testing Methodologies?

3. Types of Software Testing Methodologies

  •   Waterfall Model
  • Agile Methodology
  • Iterative Development
  • Spiral Method

4. Which QA Methodology is the best for testing?

5. How do you set up a software testing methodology?

6. Conclusion

 

Introduction

The development of a software is the process of writing code and then maintaining it to keep an application, or a web page working and running. Software development involves research, specifying, designing, programming, prototyping, modification, maintenance, and updation of any software product.

The software can be developed for several purposes, like meeting the needs of a client needing the software for its business, to reach out and help the potential users, or for personal use like developing software with the specific function for a close one or to automate a task.

The quality of software has to be maintained for which the development process has given rise to the field of software engineering. This has allowed the developers to manage the software development cycle using various testing methodologies and models.

 

What is Software Testing Methodologies?

The concept of software testing methodologies was introduced as several tests and strategies that are used to check if the application/software under development is according to the client’s expectations. The various testing technologies are unit testing, system testing, performance testing, integration testing

 

The testing methodologies are also referred to as QA models/QA methodology, which are as follows:

  • Waterfall Model
  • Agile Methodology
  • Iterative Development
  • Spiral Method

 

1. Waterfall Model

The waterfall model is considered as the most basic model of the software development process and is preferred broadly in the whole industry. As the waterfall starts from the top and goes all the way to the bottom, similarly, the developer follows the same approach as they move downwards towards the goal of the project.

The first phase of the model explains the requirements of the project before the process of testing the project begins. During this, the test team plans the whole procedure for the test. After the designing of the project, the testing starts to make sure it’s working correctly.

Advantages

The model for engineering is straightforward to plan, and the projects with clearly defined goals can be tested easily with this method.

Disadvantages

The model is suitable for those project which has no changes during the whole process as you can only move to the next phase once the previous one is completed. Hence it is not suitable for frequently changing projects.

 

2. Agile Methodology

Traditional software development methods work with the notion that throughout the process, there will be no changes in the requirements of the project. In certain conditions, the complexity of a project increases, and there are specific changes in the needs of the project. In such cases, Agile Methodology is used for solving the problems.

Agile Methodology follows the procedure of developing the software in rapid cycles by interacting with the customers, developers, and clients. This methodology aims to change depending on the response and not focus on excessive planning.

Every version of the project that is released is tested thoroughly, and any errors found are fixed before the next release.

Advantages

The software can be developed quickly, and changes can be made depending on the requirements of the user.

Disadvantages

The chances of the project going away from its goals increases if the customer is not clear about its goals during the continuous interactions.

 

3. Iterative Development

This model divides a big project into small parts, which are then transformed into multiple iterations of the waterfall model. In the end, either a new module is developed for the project, or the existing module is improved by making some changes in the planning. This developed module is then added to the software architecture, and then the testing phase for the project begins.

The moment an iteration is completed, the testing of the system begins, and after its completion, feedback is provided, and any errors are fixed before the next cycle. Testing time depends on the changes made in the iterations from the past iterations.

Advantages

The advantage of this method is that the feedback from the test is immediately available after every cycle.

Disadvantages

The communication overheads are increased over time since the results are sent after every cycle, and feedback has to be given.

 

4. Spiral Model

The model is similar to Agile Methodology but focuses more on the risk analysis. There are four phases to the model which involve planning, risk analysis, engineering, and finally, the evaluation of the project. The requirements of the project and the risks involved are done at the base level, and everything is built on it.

Advantages

Used for complex and large systems as it helps in avoiding the risks involved in large projects.

Disadvantages

As risk analysis is an essential part of the project, specialized experts are needed for the process, which increases the cost of the model.

 

Which QA Methodology is the best for testing?

Numerous QA methodologies are available for the development of the software and testing. Every technique that is developed has its advantages and disadvantages, and every method has a particular purpose that it plays in the development.

The selection process of the methodology depends on several factors such as the nature of the project, user and client requirements, the schedule of the project, etc. Some methods are used in the early stages of the project, while some have to be used until the working model of the system is ready.

 

How do you set up a software testing methodology?

The software testing methodologies are not used just for the sake of testing software code, but the bigger picture should be kept in mind.

Scheduling

The test should be scheduled in such a manner that the implementation of tests should match the schedule of every member of the team.

Well defined results

All the members of the project should be updated at all times, and well-defined results should be provided, and the results should be self-explanatory.

Test Approach

Once the scheduling of the project is complete, and the possible outcomes have been made available to the team. The developers should plan out the right approach for the test, and it should be used for the project.

Final Reporting

Once the test is complete, the final reports about the approach and its outcome should be determined at this step. Any necessary changes should be made, and the project should be finalized depending on the results.

 

Conclusion

The software development life cycle of a program depends on the project and involves a lot of steps. To avoid any future problems, the project has to be tested to fix any issues if they occur. The selection of the testing method depends on the project, and the requirement of the project and selecting the right model is necessary for the best outcome.

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