Why should Companies Invest in Regression Testing?
Regression testing is useful for companies whenever there is a new transformation bring into an existing version or whenever there are new changes introduced.
In regression testing, the word ‘Regress’ means to go back to a previous state, mainly in worst situations. Regression testing is that small part of the test cycle in which testers test some programs to ensure that newly added code or any code in which they make modifications will work correctly, and the previous version code in which they don’t make any changes will also behave appropriately.
Therefore, regression testing is needed and useful for companies whenever there is a new transformation bring into an existing version or whenever there are new changes introduced to the past version of a program. It helps us ensure our customers that any modification or delta development doesn’t break the original functionalities.
The Goal of Regression Testing
Regression testing aims to assure that new code changes do not have a negative impact on the previous development application and its tested functionalities.
When is the Right Time to Perform Regression Testing?
There are various scenarios when companies should hire a tester for regression testing. Some examples are given below:
When you introduce a new feature in your existing application.
When the migration of back-end code is done into a different platform.
When there are so many critical bugs found in the application during the testing phase and these bugs/defects are fixed by your developers or testers.
When after adding a new feature to the existing version of an application, you experience performance issues or any crash issues fixed by your developers.
When the client raises a change request for the application, you make specific changes in the code-base.
When any new change formulates in the testing environment.
When the application of UI gets changed to help users achieve the best experience.
Why Is IT Critical to Get Regression Check?
During the development stage of any software application, from developers and stakeholders to testers, everyone usually feels worried about providing correctness and quality to new functionalities of the project and doesn’t show much concern for existing functionalities, which were thoroughly checked during the testing process. But customers are familiar with existing features compared to new ones.
As a developer, it is your duty to help customers get new features in the latest update of an application. It is evident, you may feel more excited when working on a new piece of code, but while making any necessary changes in the existing code, you should carry out integration testing to guarantee that everything will work as expected.
You need to assure that previous functionality will never be get broken. You can choose test cases for regression testing from already created functional test cases as it allows you to give the same experience with the product, and your customers' will never feel any difficulty while operating the app with new features. To get the regression test successfully, the regression testing company should consider a traceability matrix for requirements, in which experts can include necessary artifacts from test cases, test status, test results to defect reports.
Whether you are an experienced regression testing service provider, you may still have to face some testing problems. For example,
Test suites increase in size when you conduct several regression tests. Due to budget and time constraints, it is not feasible for you to run the entire regression suite.
It is challenging to achieve maximum test coverage when you plan to reduce the test suite.
Understanding the frequency of regression tests after a bunch of bug fixes or every modification or every build update is a challenge.
Having continuous testing and continuous integration approach becomes the right choice when you implement regression testing with automated test cases as it helps you discover bugs early as possible. Also, you need to execute various types of regression testing in order to get better results, especially as a reputable regression testing company when you release new updates continuously to the software so that your customers can provide a better user experience to their targeted customers.
Let’s checkout types of regression testing and their uses:
- Corrective Regression Testing
- Selective Regression Testing
- Progressive Regression Testing
- Partial Regression Testing
- Unit Regression Testing
Corrective Regression Testing
If you are the person who is planning to have regression testing services from any software testing company, you need to check out which regression test is suitable for your application. So, when there are no new changes introduced in the existing application/software or product specification, you can ask a tester to perform corrective regression testing. In this test, they may use existing test cases to reduce the efforts and cost needed for retesting.
Selective Regression Testing
Selective regression testing is necessary if new changes are made to any module of the software application. For this, test cases can be re-executed to save time and cost. It helps analyze the impact of new code on existing software’s code.
Progressive Regression Testing
Progressive regressive testing is ideal when new changes and new test cases you prepare for program specifications. It assures that an updated or new version of your software doesn’t have any severe impact on old features.
Partial Regression Testing
Some issues arise in the application when you add new code in already written code. For this, the regression testing company has to ensure that the application will work perfectly even after adding new code to any feature.
Unit Regression Testing
Unit regression testing is the part of the unit testing phase, in which one can test the code as a single unit. In this process, complex interactions and dependencies are temporarily blocked, and one may use a more narrow and focused approach to get the testing done successfully.
Advantages of Regression Testing
Again, companies should invest in the regression testing service as it offers various benefits in the cut-throat competition and satisfy your build needs. When both functional and regression testing is performed using automated software tools like Selenium, TestComplete, Appium, IBM Rational Functional Tester, or Quick Test Professional software, you can acquire the following benefits:
- High-quality software.
- More test coverage in less time.
- Increase in efficiency.
- Continuity in business operations due to the implementation in an Agile environment.
- Faster product release with quality assurance.
- Quick detection of bugs before shipping the product to the market.
- Quick actionable feedback.
- Excellent collaboration allowance.
Regression testing is a kind of software testing performed by the regression testing company to ensure the customers that after updating in software or after making modifications in a previous software, the overall functionality of the software or application will work correctly without showing any buggy experience to its users.
Thus, to analyze the new code impact in the existing software, it is vital to conduct a regression test. However, it requires the right regression tools with the proper testing knowledge to help you save the maximum amount of money and time. In one case study from BugRaptors, you can understand that this company helped its customer get reliability and quality for the website, and their experts automate 90% of test cases to bring excellent results for both the client and its end users.