Different Types of Testing, explained with Examples?

Different types of software testing play essential roles. Those are explained below in detail.

Accessibility Testing

Accessibility testing is the process of ensuring that software is usable by people with disabilities. This includes people with visual, hearing, mobility, and cognitive impairments. Accessibility testing can be done manually or using automation testing tools like Testsigma.

Example: A developer is creating a new website. They want to ensure the website is accessible to people with visual impairments. They use an automated accessibility testing tool to scan the website for potential accessibility issues.

The tool identifies several issues, such as missing alt text for images and buttons that are difficult to click with a mouse. The developer fixes these issues before releasing the website to the public.

Acceptance Testing

Acceptance testing is the process of verifying that a software product meets the requirements of the customer. This is typically done by the customer or a representative of the customer. Acceptance testing can be done manually or using automation testing tools.

Example: A customer is developing a new mobile app. They want to ensure the app meets their requirements before releasing it to the public. They create a list of requirements for the app, such as the ability to log in, view a list of products, and add products to a shopping cart. The customer then tests the app to see if it meets all requirements.

Black Box Testing

Black box testing is a type of testing where the tester does not have access to the internal code of the software. (like testing without complete knowledge) The tester only knows what the software is supposed to do, not how it does it. Black box testing is often used to test the functionality of the software.

Example: A tester is testing a new online banking application. They do not have access to the internal code of the application. The tester only knows that the application should allow users to deposit, withdraw, and transfer money between accounts. The tester tests the application to see if it allows users to perform these tasks correctly.

End-to-End Testing

End-to-end testing is a type of testing that tests the entire system from beginning to end. This includes testing all of the different components of the system and how they interact with each other. End-to-end testing is often used to test the usability of the system.

Example: A tester is testing a new e-commerce website. They start by creating an account on the website. Then, they add some products to their cart and checkout. The tester tests the entire process to make sure that it is easy to use and that the user can complete the purchase successfully.

Functional Testing

Functional testing is a type of testing that verifies that the software performs the functions that it is supposed to perform. This includes testing the software’s different features and ensuring they work correctly. Functional testing is often used to test the correctness of the software.

Example: A tester is testing a new word-processing application(like notepad/word). They test all of the different features of the application, such as the ability to type text, format text, and print documents. The tester ensures all the features work correctly and the user can use them efficiently.

Interactive Testing

Interactive testing is a type of testing where the tester interacts with the software in the same way that a user would. This type of testing is often used to test the usability of the software.

Example: A tester is testing a new mobile game. They play the game as if they were a real user. The tester ensures the game is easy to learn and play and that the user can complete the game objectives.

Integration Testing

Integration testing is a type of testing where different components of the software are integrated together and tested to see if they work together correctly. This type of testing is often used to test the reliability of the software.

Example: A developer is developing a new software system with several components. The developer integrates the components and tests the system to see if all components work together correctly. The developer also ensures that the system is reliable and can handle unexpected errors.

Load Testing

Load testing is a type of testing where the software is subjected to a high volume of traffic to see how it performs. This type of testing is often used to test the scalability of the software.

Example: A tester is testing a new web server. They use a load-testing tool to generate high traffic to the server. The tester monitors the server’s performance to see how it handles the load. The tester ensures the server can handle the load without crashing or becoming unresponsive.

Non Functional Testing

Non-functional testing is a type of testing that verifies the non-functional aspects of software, such as performance, security, and scalability.

Example: A tester might test the security of a new website by trying to hack into the website and exploit vulnerabilities.

Performance Testing

Performance Testing is a type of non-functional testing that verifies the performance of the software under different load conditions. This includes testing the response time of the software, the throughput of the software, and the resource utilization of the software.

Example: A tester might test the performance of a new e-commerce website by simulating many users browsing the website and adding items to their carts.

Regression Testing

This type of testing is performed to ensure that new changes to the software do not break existing functionality. Regression testing is typically performed after new features have been added to the software or after bugs have been fixed.

Example: A company is developing a new social media website. The company performs regression testing after adding a new feature to the website to ensure that the new feature does not break any existing functionality.

Sanity Testing

This type of testing is performed to quickly verify that the software is still working as expected after changes have been made. Sanity testing is typically performed manually and focuses on the most critical features of the software.

Example: A software development team is working on a new feature for their website. The team performs sanity testing on the new feature to ensure it works as expected. The team might test that the new feature can be successfully added to the website and works correctly when users interact.

Security Testing

This type of testing is performed to identify and assess security vulnerabilities in the software. Security testing can be performed at different levels, such as unit, integration, and system testing.

Example: A security tester is testing a new banking website. The tester tries to identify any vulnerabilities that could allow attackers to steal user data or compromise the website. The tester might try to log in to the website using stolen credentials or inject malicious code into the website’s database.

Single User Performance Testing

This type of testing measures the performance of the software when a single user uses it. Single-user performance testing can be used to identify any performance bottlenecks that occur when a single user uses the software.

Example: A software company is developing a new video editing software. The company performs single-user performance testing to measure how well the software performs when editing a high-resolution video. The company might measure the time it takes to load, render, and export the video.

Smoke Testing

This type of testing is performed to quickly verify that the software is still working as expected after a build is created. Smoke testing is typically performed manually and focuses on the most critical features of the software.

Example: A software development team has just created a new build of their software. The team performs smoke testing on the build to ensure the most critical features work as expected. The team might test that the software can be launched and that the user interface is still displayed correctly.

Stress Testing

This testing simulates a heavy workload on the software to see how it performs under stress. Stress testing is typically performed to identify performance bottlenecks or failures when the software is under stress.

Example: A company is developing a new e-commerce website. The company performs stress testing to see how the website performs when it is under a heavy load, such as during a holiday shopping season. The company might simulate a large number of users trying to access the website at the same time.

Unit Testing

This type of testing is performed to test individual code units, such as functions or classes. Unit testing is typically performed manually or using automated testing tools.

Example: A software developer is working on a new function for their software. The developer tests the function to ensure it works as expected. The developer might test that the function returns the correct result for different input values.

White Box Testing

This type of testing is performed with knowledge of the internal workings of the software. White box testers try to identify errors in the software by understanding how the software works and how the different components interact.

Example: A software developer is working on a new algorithm for their software. The developer performs white box testing on the algorithm to ensure it is correct. The developer might use a debugger to step through the algorithm and check that it performs as expected.