Iteration Regression Testing And Full Regression Testing in Agile

Usually, in the waterfall approach, a subset of Functional test cases is picked and the regression test suite is created. This approach is not effective in an Agile environment. The functions of the application are developed in iterations.

With each sprint, many changes would have taken place in a functional area until the final delivery. The functional test cases of a particular functional area in sprint 1, may require changes in sprint 2, because of adaptive and iterative nature of development.

Best Methods for Regression testing in Agile

i. Automated regression testing:

Because of the repetitive nature of these regression instances, they are ideal for automation. A parallel automatic run of regression testing can save time and enhance quality.

ii. Range of testing:

The reach of testing during iteration regression testing can be different from the scope of testing during full-regression testing. In iteration regression testing, a smaller scope can be under consideration for analyzing, whereas throughout full-regression just before the significant release, the entire scope covering all of the functionalities will be considered for regression.

E.g.. In sprint 1, in the event the program is published for Windows system only, the scope of testing in strategy document is only for Windows and examine cases are picked accordingly.

After many iterations, assume a major launch is intended where applications will be released on Windows, Mac, android platforms also. Here, the range of testing for full-regression testing will comprise each of the three platforms for analyzing.

Hencewe must clearly understand the range of testing -whether it's for iteration regression testing or full regression testing differently we might end up losing time or wind up testing features which were not meant to be for this sprint.

iii. Efficient regression test strategy:

Defining an efficient evaluation strategy is very important for regression testing in Agile. The regression test strategy should have a proper balance of under crucial points for effectiveness.

iv. Manual vs Automated:

Proper mix of manual and automated test cases must be chosen. The test cases that are difficult to automate ought to be kept out of this regression package because time is crucial in agile.

V. Iteration vs Full regression:

Dependent on the needs and changes in the sprint, the iteration and full regression testing type ought to be selected.

vi. Care of regression test package:

Whenever there are changes in the functional requirements. Deletion of obsolete test instances is as important as the addition of new instances dependent on the development activities consumed in the sprint. Continuous testing:

In Agile era, constant testing is the backbone of Quality Assurance. Fail fast and fail frequently through continuous testing, so that defects are uncovered quickly and fixed before delivery with minimum effect on customers.

viii. Assess the return on investment (ROI):

Return on investment is significant and should be measured in Agile regression testing also. The measured ROI is contrasted with all the ROI of the previous sprint(e.g. ROI is measured concerning the time stored during test case execution after the test cases which were being implemented manually were automatic ), to optimize the regression testing in another iteration.

Conclusion

The Agile strategy towards regression testing makes continuous testing critical. Continuous Integration, Continuous Delivery and Constant Deployment are all part of this game.

This enriches the dependence on automation for all these activities including the construct generation after the code integration. The nightly build cycles are triggered by CI server and automated continuous regression testing is conducted.

Regression testing ensures the company continuity with minimal effect on customers and consequently can't be skipped.

In each sprint, the whole team focuses on the functionality being developed in that specific sprint, and the regression tests take care of the equilibrium of the overall application, for example, code which was designed in previous sprints.

Consequently, the value of the regression in an Agile environment is immense and needs due attention not just from the testing team but also from programmers, Merchandise owners, business analysts and other stakeholders.