A Complete Guide On Automated Regression Testing



Automated Regression Testing is the research environment where most testing efforts can be automated. We would be running all of the previously executed test cases on a new build. This means that we have a test case set available and running these test cases manually is time-consuming.

Regression checks ensure that the code that was previously working correctly does not regress when changes are made. Having a robust set of unit-level regression tests offers a safety net, ensuring that code improvements do not break existing features.

It is normal to optimize regression tests. However, several automated regression testing solutions make it possible to automate regression testing at multiple test stages:

  • Automatic test regression generation
  • Automatically run regression tests
  • Maintenance of regression test automation
  • When regression testing should be performed

Automatic regression test generation

System testing makes it very costly and inefficient to change legacy code, but it is also not financially viable to manually write a comprehensive set of unit tests from scratch. 

Automated regression testing tools will automatically produce a series of passing unit tests by scanning the source code and finding all possible paths through the code. The test suite can be created according to the structural code coverage goal.

These self-generated tests can then be used as a simple safety net to detect regression bugs when code changes are made. This eliminates the emphasis on time-consuming and costly device checks, as well as being much more detailed and more reliable in determining the position of errors.

Automatically run regression tests

If a set of progressing regression testing as software testing has been developed, re-running them can be automated using a continuous integration solution such as Jenkins or Bamboo. Automatic regression testing ensures that tests can be run easily with any construct. Regular test runs make bugs easier to correct as regression errors have been found earlier. This means that code updates are already fresh in mind and that the issue is less likely to have been exacerbated by more changes.

Automatic Regression Test Maintenance

Source code changes can often mean that regression tests need to be changed. Test maintenance can be costly as a substantial effort is required by the developer to locate the dependencies and upgrade the tests to ensure they are consistent with the updated code under test. 

automated regression testing

A lot of this method can be automated. Cantata Code Change Analyzer uses information from the last test run to automate test changes. If there is more than one suitable way to update the tests, an automated test tool could provide developers with code options for re-synchronizing the tests:

  • For each change of code, too
  • ls may recommend necessary test updates
  • Provide instructions on the consequences of the acceptance of the suggestion
  • Instantly refactoring tests to incorporate the proposed update

Software regression is any undesired shift that happens as a result of code changes. A real-world example of this is when you take your car to a mechanic to repair the air conditioning, and when you get it back, the air conditioning is fixed, but the gas tank sensor doesn’t work anymore.

Regression can occur in software after a new feature has been introduced. Let’s say the email photo-sharing service adds video functionality, but the basic feature of sharing images with a set group of email addresses is fully broken after the functionality is released.

As regression testing is for established features, constant recurrence is necessary. Each release cycle should involve a reasonable amount of regression testing to assure that no new software creates glitches or breaks.

When regression testing is automated, it allows checks on a range of adjustments and frees testers to perform manual experimentation in more rare cases in the production environment. Not all regressions are due to new functionality or the effects of routine bug fixes. They can also be triggered by database changes or new versions of the browser, in the case of a web app.

Tools such as Selenium and vTest can be used for both functional automation and regression testing, helping to achieve more on a single platform. With Selenium, you can automate the test scripts as well as the results reports.

Why is Regression Testing Important?

Regression testing increases our chances of finding errors caused by software and application improvements – including upgrades or bug fixes. Keep one thing in mind, though, that we don’t offer any kind of assurance that there will never be any kind of side effects for regression testing.

Regression testing often detects adverse side effects that are often triggered by modifying the operating setting.

The regression test collection is very useful for a new way to do integration testing. This new model is much simpler and less complicated than the old way of doing integration testing-but you always need some kind of regression test collection to do it.

Advantages of Regression Testing:

  • Improves the consistency of the commodity.
  • It ensures that any bug fixes or changes that are made do not affect the current functionality of the Product.
  • Tools for automation can be used for this test.
  • It ensures that problems that are already resolved do not recur.

Disadvantages:

  • It needs to be done with a minor change in the code as well since even a small change in the code will trigger problems with the current features.
  • If automation is not used for this test in the Project, it would be a time-consuming and time-consuming process to run the test cases again and again.

Regression Testing is one of the key aspects as it helps to produce a quality product by ensuring that any improvement in the code, whether minor or significant, does not impact current or old functionality.

There are several automation tools available to automate regression test cases, but a tool should be chosen as per the project requirement. The tool should be able to update the test suite, as the Regression test suite needs to be modified regularly.