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What are types of regression testing?

Today, every customer wants updated software, and in order to provide this, every organization is releasing constant updates in features and functionalities. But these frequent updates and changes sometimes affect the existing functionality of the software. This is where regression testing comes into the picture as it ensures the stability of software even after frequent changes.

What is regression testing?
Regression testing is an important software testing type which involves re-running the functional and non-functional test. These tests are conducted to ensure that the previously developed and checked software works fine as expected even after the change is made to the software.

What are the types of regression testing?
Below mentioned are some of the major types of regression testing:
1. Unit regression testing: This type of regression test is usually conducted in isolation as it is focused on unit code. While performing this type of test all the interactions and dependencies are blocked.
2. Partial regression testing: Whenever a new code is added to the existing code, partial regression testing is conducted. It is done to check the interaction of new code with existing code to ensure that these codes can work together in a system as expected or not.
3. Complete regression testing: Whenever multiple changes are introduced to the system, complete regression testing is performed. It is done because minor and major changes both can affect the functionality of the software.
4. Progressive regression testing: Whenever changes are made in program specifications or new test cases are designed, a progressive regression test is performed.
5. Selective regression testing: This type of regression testing is done to check the impact of new code on already existing code. A subset from the already existing test case is used to conduct a selective regression test.
6. Retest-all regression testing: This type of testing is performed to test all aspects of the software even if the change is made or not. This involves reusing all test cases and re-testing every code of the software.
7. Corrective regression testing: When there is no change made in the software, a corrective regression test is performed. In this type of regression test already existing test case can be reused easily to perform the test.
Usually, every software goes through frequent changes and updates but during this process, there are chances of bugs getting introduced or existing functionality getting affected. Therefore, regression testing is done to ensure that the exiting functionality of software works as expected after software changes.
Leverage regression testing from a next-gen software testing services provider to get quality software that delivers a seamless customer experience.


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