As software apps get complex when intertwined with a large number of modules, platforms, or devices that need to be tested regularly, it is necessary to adopt robust testing methodologies to make sure that software products being developed are fully tested, meet necessary requirements, and successfully operate in all anticipated environments with the needed usability or security with QA methodology.
Software Testing methodologies are the approaches and strategies used for testing a precise product to make sure it is fit for purpose. It generally entails testing that the product functions along with its specification, has no unwanted side effects when used in modes outside of its design parameters, and the most horrible case, will fail safely. There are tons of QA testing methodologies available that are designed for a specific purpose with their own merits and demerits.
Here we will discuss the model for testing in software testing methodologies in brief. Still, thinking what is software testing? Here are the models to operate them.
Waterfall Model
In this QA methodology, In the waterfall model, the progress of software development is checked through different phases like requirement phase, analysis, design phase, etc. The next phase begins only when the earlier phase is completed. The first phase in the waterfall model is the requirement phase where project details are clearly defined in advance before we start with software testing. In this phase, the test team brainstorms the scope of testing, testing objectives, testing strategies, etc.
Advantages: It can be used to easily plan and manage project requirements. It is low-cost and enables faster project execution in QA methodologies.
Disadvantages: It’s a predefined methodology and cannot be skipped. Even a minor change in the methodology can bear huge expenses.
Iterative Model
In this QA methodology, model, a big complex project is divided into small chunks and each part is subjected to multiple iterations of the waterfall model. At the end of each iteration, a new module is added or the existing module is enhanced. Later, modules are integrated into the software architecture and the entire system is tested together. The feedback for each iteration is quickly incorporated into the next cycle. The total testing time can be reduced for future iterations by the experience gained from past iterations.
Advantages: Shorter iterations for complex software reduce development time and cost. As opposed to the documentation this model offers more flexibility and focuses on design.
Disadvantages: General communications costs can increase significantly after each iteration of feedback. The iteration cycle is stiff and does not overlap.
Agile Methodology
In this QA methodology, An agile model uses an iterative and incremental approach together. It breaks up the product into small incremental units to provide iterations. Further, each iteration involves steps like requirements, design, coding, testing, etc. This approach allows continuous interaction with customers, collects feedback, and improves the current build at regular time intervals. Here are the reasons why you should adopt the agile methodology for your software project. In fact, it is considered to be the best model for testing in software testing methodologies, by some.
Advantages: In this methodology complex application processes are easy to manage, modify and test. The extra testing reduces the costs and risks associated with the many changes.
Disadvantages: A lower planning priority can lead to document inefficiencies. It is difficult to anticipate the time and effort involved in major projects.
V Model
In this QA methodology, the V model is an extension of the waterfall model where development work is done sequentially. It is also named the verification or validation model. It includes testing phases directly associated with every single phase of the development cycle. It is more beneficial and cost-efficient when compared to the waterfall model because testing is performed side by side instead of completing it at the end.
Advantages: Functions well for small projects when requirements are included & is much more cost-efficient than the waterfall method. Each stage is tested and validated to identify errors early in the development cycle.
Disadvantages: Does not have an inherent ability to meet changing demands and clear solutions that can eliminate software defects. Not suitable if you are looking to use it for a large project.
Spiral Model
In this QA methodology, The spiral model incorporates the iterative development approach and waterfall approach together. It is similar to the incremental model with more focus on risk analysis. The different phases of the Spiral model include the planning phase, Risk analysis, Evaluation, Engineering phase, etc.
Advantages: Reduced risk because of a high level of risk analysis. Has strong documentation support as well as works well with critical & large projects.
Disadvantages: It’s expensive & unsuitable for small projects. It requires good technical know-how as well as its dependence largely on the risk analysis phase.
