What are the types of software testing?

To choose quality of an application is never an option, it’s always a necessity. There is no choice for enterprises to choose between whether to take care of the quality of their apps or not. Because quality is a luxury that businesses offer to their customers. It is rightly said that quality is not an act, it is a habit. Businesses who understand the importance of quality take testing seriously. Undoubtedly, it is like the fuel that keeps your application going. So, making Testing an integral part of Software, most of the businesses have integrated this within their application development process. You can say that there is no single way to perform software testing, because it depends on the unique needs of the applications. You can use different types of software testing methodologies for your software development process like manual software testing services or automated testing services.

In this blog, we have a clear intent to showcase in a comprehensive way in the types of software testing used in developing these applications. It is equally important for developers and quality assurance professionals to understand the fundamentals of software testing. It is critical to understand the various forms of software testing in order to release better software and identify problems that influence application development.

Software Testing Methods

1. Functional Testing and Non-Functional Testing

Testing has two major categorical bifurcation

  1. Functional Testing
  2. Non Functional Testing

Lets see what each of this technology aspects stands for

Functional testing ensures that a software application’s functionalities are as specified in the requirements. The key differentiator of Functional testing is  that it does not rely on the application’s source code. We can check the User Interface, Database, APIs, Client/Server applications, as well as the security and functioning of the program under test, verify if all options are available or not. We can do Functional testing either manually or with the help of software i.e. automatically.

Non Functional Testing examines the application’s non-functional characteristics, such as performance, usability, and dependability, among others. You can perform tests in this section that have an influence on the basis of what affects the performance of the application. There are multiple ways we can analyze the non functional aspects of business apps with software testing.

The initial black box testing and white box testing also had these functional testing imbibed in it. The perception of ways are different but it has the same agenda of making application bug-free and high-performing. Let’s get deeper and understand types of software testing.

2. Types of Functional Testing

2.1 Unit Testing

In unit testing, individual units or components of software are tested at this level of testing. In this type of software testing, each unit is minutely observed and analyzed. The only goal is to ensure that each component of the software works as intended. A unit is the smallest possible unit of software that requires testing. It generally just has one or a few inputs and one output.

Programmers/ developers carry out this process and not the testers. Because it encompasses each code of testing which is equivalent to coding again if testers do that. Hence, developers perform this method from all the types of software testing.

2.2 Integration Testing

Individual components are integrated and tested as a group at this level of software testing. This level of testing is designed to reveal flaws in the interaction of integrated units.

There are different ways of approaching the integration tests of your software development life cycle. It can be through top down approach, or big bang approach or Sandwich/hybrid

2.3 System Testing

In the Software testing phenomenon, system testing plays an equally important role. We perform this type of testing to check whether the system meets the standards and accordingly match up the system standards. This performs end-to-end testing where there are system plans, system test cases and system tests. We use various testing methods to test the system and perform functional testing. You can also use tools for testing.

2.4 Interface Testing

Interface is basically the platform that connects the back end side of functioning and front end side of the developed application. We test the user interface of an application during user interface testing. The purpose of user interface testing is to ensure that the user interface is built in accordance with the requirements specifications document. When you see an application running successfully with great UIs, the reason behind it is strong interface testing that has made the application robust and secure to perform in any environment.

2.5 Regression Testing

Regression testing is an important step for a product’s development and is highly helpful for developers in determining the product’s stability whenever there is modifications in needs. This testing ensures that a software update does not affect the product’s current functioning. The regression testing allows developers to test, build test, till the application is bug-free. Regression testing blindly follows a few techniques such as retest all where there is retesting of the whole app till it becomes error-free. Here the execution of Regression test case prioritization is as per priority, criticality and its implication on the developing application. After this step, we can ensure that the developed app is all set to break into the market. Now at this point majorly, all the tests are completed and all the errors are also addressed.

2.6 User Acceptance Testing

Acceptance Testing is a type of software testing that examines the acceptability of a system. The goal of this test is to determine whether the system meets the business requirements and whether it is suitable for delivery. As we know, User Acceptance Testing determines whether or not software can be accepted by ensuring that it fullfils all of the client’s criteria and if it is not then it is send back to the developers to accurately check the requirement sheet and make sure you meet the unmet requirements. Later, it will again undergo the same regression testing to make sure everything is in place.

2.7 Alpha Testing

Alpha testing is one of the types of software testing that looks for all of the software’s faults and problems. We carry this type of test towards the end of the app development process, before the product launch or delivery to the client, to guarantee that the user/client receives an error-free software program. Alpha testing comes before beta testing, therefore you’ll need to do beta testing after you’ve finished with alpha testing. Alpha testing isn’t done in real testing environment. Instead, we carry these assessments in a virtual environment that closely matches the actual world.

2.8 Beta Testing

As we know, after we perform Alpha testing first, and beta testing later to that. Before a product’s debut, it’s put through its paces. We conduct it in small numbers of actual customers or users in a real-world setting to ensure that the program is error-free and runs smoothly. We can make  improvements to the software after gathering input and constructive criticism from those users.

3. Types of Non-Functional Testing

It all started with manual testing and later automated testing took over. Manual testing had a lot of hassle and was slow in showing results, which brought this automation testing in picture. It accelerates the pace of testing and now mostly depending on the app development needs, this testing is most preferable. Now, when it comes to non-functional testing, its primary function is to put the applications under test, based on load, how they perform in terms of performance, reliability, usability, and scalability, among other things. Non-functional testing, such as load and stress testing, is commonly performed with the use of automation tools and solutions like LoadView.

3.1 Documentation Testing

We know there is a document in preparation for the test to undergo smoothly. With documentation testing aids in the estimation of testing effort and coverage. The test strategy, test cases, and requirements section are all included in the software documentation. Check almost all types of documents, examples, methods, and samples as an input in the document are legit or not. If not, modify it and correct it.

3.2 Installation Testing

In the software business, installation testing is a form of quality assurance work. This has its major focuses on what consumers will need to do to correctly at the time of installation, and set up new software. It could be anything from a third-party backup app, link description or any other essential needs. It can be full, partial, or upgrade type of install/uninstall operations may be part of the testing process. This is a non functional need but without this the installation process won’t succeed.

All you must take care when you design an installation procedure is path to installation of full version of Application, automate testing efforts,Disk Space,distributed Testing Environment, validate other registry changes after installation and finally uninstallation testing.

3.3 Performance Testing

Performance tests determines whether or not the program is performing well as per the expectations.There are performance testing tools that assess the performance of your app and show you where the problems are. You may improve the performance of your software program by addressing these concerns.

The general objective of this testing, as the name implies, is to compare an application’s performance to various system and network benchmarks such as CPU utilization, page load speed, peak traffic handling, server resource consumption, and so on. There are numerous different forms of performance testing, such as load testing and stress testing. We will be understanding the 4 essential types of performance testing.

3.4 Load Testing

Load testing is a type of performance testing that determines how much load a system can withstand before its performance degrades. We can determine a system’s load capacity by performing load testing. If your developed application is able to take the amount of audiences targeted at a single time then the load test is successful. We perform unit tests here to understand how much is the load at each feature and how we should resolve it to make it a seamless performer.

3.5 Stress Testing

Stress is a type of testing that ensures the maximum limit of load that can be applied on a website or application. This type of testing ensures the feasibility of the application or website or any software and how it can be addressed.

3.6 Endurance Testing

This type of testing is continuous testing measures a specific type of workload given applied consistently on the website. Based on this, we can make the decision of the estimation of users and concurrent users using these apps

3.7 Spike Testing

For specific business scenarios when there is an unexpected user intervention or load applied in any other form on application. This is a precautionary measure to understand how the app reacts when the load is low.

3.8 Reliability Testing

Reliability testing ensures that the product is free of flaws and capable of performing its intended function.It’s all about testing an application to find out whether it has any flaws before deploying it. Each function in the software should be run at least once as part of the feature test. In addition, there should be less interaction between two or more functions. Within reliability test, you can also perform regression tests whenever there is an addition of a new functionality or deletion of old functionality. This is to ensure there is no entry of  new issues in the system.

Before setting the reliability testing objectives you must mark certain restrictions. You should mark the restrictions such as software behavior under certain testing environments, attainable targets, and time.

3.9 Security Testing

As a software testing practice, you must consider security tests to be the first thing. There are multiple ways you can maintain the security of the application. Security testing is a type of software testing that guarantees that an organization’s systems and applications are free of flaws. The goal of security testing is to identify any system flaws that might lead to data loss  or bad market reputation.

4. Conclusion

This extensive blog is a highlight of all types of software testing we need for any business. May it be any industry or sector, these are the major types of software testing which will help you create a bug-free, performing and top-notch application. We have tried and put forward all the essential points that will help you use these software development and testing techniques and practically imply it. Your app is different so the needs of testing will be different but don’t consider testing an option just because the process is not the same for all. To lead a successful app, testing is a necessity.

Itesh Sharma

Itesh Sharma is core member of Sales Department at TatvaSoft. He has got more than 6 years of experience in handling the task related to Customer Management and Project Management. Apart from his profession he also has keen interest in sharing the insight on different methodologies of software development.


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