Software Testing, Types of Software Testing

15 Types of Software Testing Every Developer Should Know

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Software programs are instructions that execute a specific task on a computer. The software can be classified into several types, including embedded software, firmware, and application software.

Software testing refers to the execution of software or systems to find bugs. Software testing companies provide QA services that help identify gaps, errors, and missing requirements.

Software testing can be divided into different types. They aim to verify and validate that the software complies with its business requirements.

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Top 15 Types Of Software Testing

  • Unit Testing

Unit testing allows you to test small sections of code. This is usually a method or a single function. Developers who are familiar with the code will perform this type of testing. Unit tests are used to ensure that code works as expected when it is isolated from the rest.

  • Integration Testing

Although integration testing is similar to unit-testing, it can test multiple sections of code simultaneously. Integration tests can be used to verify that a web server and a database communicate correctly. Developers who understand how each part of the system should interact are more likely to perform integration tests.

  • Acceptance Testing

End-users and customers perform acceptance testing to ensure that the application meets their expectations and fulfills their functionality, usability, and performance needs. An independent group of testers outside the development organization often perform acceptance tests during or after the development process.

  • Regression testing

Software testing is used to find new bugs or regressions in software systems after modifications or enhancements have been made.

Regression testing is used to determine whether a change in one component of software has an effect on other parts. This is usually done to verify fixes for defects that were reported in previous testing cycles. Regression Testing can also reveal side effects (unintended consequences) that code modifications may cause.

  • System Testing
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System testing is the process of testing the entire system to determine if it meets its requirements. Black-box system tests do not test the internal mechanisms of any component or system and instead focus on the outputs that are generated in response to certain inputs and execution conditions.

  • Stress testing

This type of software testing validates your software stability and performance. It is used to determine the breaking point and maximum operating capacity for an application.

Stress testing can be done by specialists within a company rather than software testers.

Stress testing is used to determine how a system performs under stress conditions. This allows you to see what happens when the system is used at its maximum capacity.

The stress tests will determine if the system is up to the mark or if it needs to be tweaked before the product goes into production.

  • Smoke Testing

Smoke testing is a method of testing software that ensures that only the most critical functions work. Smoke testing is a term that comes from hardware testing. It involves turning on new hardware and then observing if it doesn’t catch fire or smoke.

Smoke tests can be used to verify that an application is sufficiently stable to warrant more detailed tests.

  • Accessibility testing

Accessibility testing refers to the process of making sure software is accessible for people with disabilities (blind or deaf). Although accessibility testing is similar to usability testing, there are additional considerations. A blind person might use a screen reader for text to be translated into audio. The tester should use text to speech software to test the application.

  • Compatibility Testing

Compatibility testing refers to the verification that an application will work on different platforms, browsers, operating systems, and devices. Compatibility testing may also address performance issues such as load time or memory usage.

  • Ad-hoc testing
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Ad-hoc testing allows the tester to randomly test the system’s functionality. Monkey Testing is another name for it. Anyone with basic knowledge of the application can perform ad hoc tests. This test can result in a positive or negative outcome (bugs span>

  • Black Box Testing

Black-box testing allows you to examine the app’s function as a user without having to look at its internal structure. It simply looks at the app’s functionality and checks for errors (bugs span>

These tests are what your users will do when they use your app. They don’t care about the internal workings of the app; they simply want to make sure that it works correctly.

  • Sanity Testing

This is a very basic form of testing, which is done following regression testing to verify that code changes have not affected other functions. It is basically a subset regression testing that checks if the latest changes to the code are correct. This is also known as build verification testing. It’s used to confirm that no bugs have been added in the latest build and fix an existing bug.

  • Interactive Testing

Interactive testing allows testers and developers to interact to create test scripts. The developer writes the test scripts while the tester proposes additional tests. This approach has the advantage of being fast as both creating and executing tests happen simultaneously.

This approach can lead to inaccurate assumptions in the event of a bug. The developer might write scripts that allow them to add features that make the software work according to their understanding. This could lead to a divergence in requirements and possibly bugs that go unnoticed.

Another problem with this approach is the lack of knowledge in testing. Scripts could miss critical bugs or fail to cover crucial scenarios.

  • Load Testing

Load testing, a type of performance testing, determines how your software application behaves under a particular load. Load testing helps determine the amount of traffic your website can handle without causing a drop in performance.


Load testing can predict system behavior under normal and peak conditions. This helps you to determine the maximum number of users your application can handle at once and how it behaves when it exceeds its maximum capacity. Load testing is a great way to identify potential failure points and bottlenecks before you release an application to production.

  • End-to-end testing

End-to-end tests (E2E) are the most difficult level of automated testing. E2E testing simulates actual user actions, such as clicking buttons or entering text into input boxes. It also involves interacting with the UI of an application to verify that it works correctly.

E2E testing can give you confidence. You can confidently refactor or make changes to your application if you know the behavior of your application in production.


Testing is not an event but an ongoing process. The type of test that is performed will depend on many factors, including the requirements and the risks involved. For any company to succeed, it is essential that software testing be done in a way that meets both business and senior management expectations.

Ineffective software testing can also damage your business reputation and lead to high development costs. It can also cause undue stress. Software testing is an important aspect of software development and should not be taken lightly.

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