Hi everyone! today we started learning about regression testing on Flutter, Regression testing is a software testing practice that ensures an application still functions as expected after any code changes, updates, or improvements.
Regression testing is responsible for the overall stability and functionality of the existing features. Regression testing is re-running functional and non-functional tests to ensure that previously developed and tested software still performs after a change. If not, that would be called a regression.
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Table Of Contents::
Need for Regression Testing in Flutter
How to do Regression Testing in Flutter
Selecting Test Cases for Regression Testing
Regression Testing and Configuration Management
Difference between Re-Testing and Regression Testing
Challenges in Regression Testing
What is Regression Testing?:
Regression Testing is defined as a type of software testing to confirm that a recent program or code change has not adversely affected existing features. Regression Testing is nothing but a full or partial selection of already executed test cases that are re-executed to ensure existing functionalities work fine.
This testing is done to make sure that new code changes do not have side effects on the existing functionalities. It ensures that the old code still works once the latest code changes are done.
Need for Regression Testing in Flutter:
The Need for Regression Testing mainly arises in Flutter whenever there is a requirement to change the code and we need to test whether the modified code affects the other part of the software application or not. Moreover, regression testing is needed, when a new feature is added to the software application and for defect fixing as well as performance issue fixing.
How to do Regression Testing in Flutter:
To do the Regression Testing process, we must first debug the Flutter code to identify the bugs. Once the bugs are identified, required changes are made to fix them, then the regression testing is done by selecting relevant test cases from the test suite that covers both modified and affected parts of the code.
Software maintenance is an activity that includes enhancements, error corrections, optimization, and deletion of existing features. These modifications may cause the system to work incorrectly. Therefore, Regression Testing becomes necessary. Regression Testing can be carried out using the following techniques:
Retest All:
- This is one of the methods for Regression Testing in which all the tests in the existing test bucket or suite should be re-executed. This is very expensive as it requires a lot of time and resources.
Regression Test Selection:
Regression Test Selection is a technique in which some selected test cases from the test suite are executed to test whether the modified code affects the software application or not. Test cases are categorized into two parts, reusable test cases which can be used in further regression cycles and obsolete test cases which can not be used in succeeding cycles.
Prioritization of Test Cases:
- Prioritize the test cases depending on business impact, and critical & frequently used functionalities. Selection of test cases based on priority will greatly reduce the regression test suite.
Selecting Test Cases for Regression Testing:
It was found from industry data that a good number of the defects reported by customers were due to last-minute bug fixes creating side effects hence selecting the Test Case for regression testing is an art and not that easy.
Effective Regression Tests can be done by selecting the following test cases –
- Test cases that have frequent defects
- Functionalities that are more visible to the users
- Test cases that verify core features of the product
- Test cases of Functionalities which has undergone more recent changes
- All Integration Test Cases
- All Complex Test Cases
- Boundary value test cases
- A sample of Successful test cases
- A sample of Failure test cases
Regression Testing Tools:
If your software undergoes frequent changes, regression testing costs will escalate. In such cases, Manual execution of test cases increases test execution time as well as costs. Automation of regression test cases is the smart choice in such cases. The extent of automation depends on the number of test cases that remain re-usable for successive regression cycles.
1) testRigor:
testRigor is a Generative AI-driven, codeless test automation tool helping companies empower manual testers to build test automation via executable specifications in plain English, achieving speeds up to 15x faster than Selenium. Additionally, it requires 200x less time maintaining tests compared to Selenium. As a no-code automation testing solution, testRigor excels in cross-system end-to-end testing, seamlessly integrating tests across various platforms including web, mobile, Salesforce, ServiceNow, Microsoft Dynamics, SAP, and other third-party systems in a single, straightforward test.
Features:
- The free forever public version
- Test cases are in English
- Unlimited users & Unlimited tests
- The easiest way to learn automation
- Recorder for web steps
- Integrations with CI/CD and Test case management
- Email & SMS testing
- Web + Mobile + API steps in one test
2) Avo Assure:
Avo Assure is a technology agnostic, no-code test automation solution that helps you test end-to-end business processes with a few clicks of the buttons. This makes regression testing more straightforward and faster.
Features:
- Autogenerate test cases with a 100% no-code approach
- Test across the web, desktop, mobile, ERP applications, Mainframes, associated emulators, and more with a single solution.
- Enable accessibility testing
- Execute test cases in a single VM independently or in parallel with Smart Scheduling
- Integrate with Jira, Jenkins, ALM, QTest, Salesforce, Sauce Labs, TFS, etc.
- Define test plans and design test cases through the Mindmaps feature
3) Telerik Test Studio:
Telerik Test Studio is an automated testing platform for web, desktop, and responsive applications, supporting functional UI, load, and RESTful API testing. Test Studio helps teams eliminate regressions and make sure their applications still work the way they did before any changes were introduced. It comes with standalone IDE and Visual Studio integration
Features:
- Visual test recorder for codeless end-to-end tests
- Cross-browser support
- Headed or three times faster headless test execution
- Element location based on element ID and image
- CI/CD Integration and Docker support for Continuous Testing
- Data-driven testing
- Remote test scheduling and execution
- Test results and reports
4) Subject7:
Subject7 is a cloud-based, “true codeless” test automation solution that unifies all testing in a single platform and empowers anyone to become an automation expert. Our easy-to-use software enables fast, easy, and sophisticated authoring of regression tests without writing a line of code, and high scale execution that runs thousands of nightly tests.
Features:
- Integrates easily with DevOps/Agile tooling using native plugins, in-app integrations, and open APIs.
- High-scale parallel execution in the cloud or on-prem with enterprise-grade security.
- Flexible reporting of defects, with video capture of results.
- Simple, non-metered pricing, delivering financial predictability.
- SOC2 Type2 compliant
5) Eggplant:
Eggplant’s AI-driven test automation streamlines regression testing through prioritization of test cases and minimization of test maintenance.
Features:
- AI-driven test execution enables Eggplant to test the most important areas of each release.
- Reuse testing models and scripts to test multiple versions with one set of assets.
- Reduce the burden of test maintenance through self-healing functional tests.
- Understand and focus on problematic areas of your application that put your release at risk.
- Discover bugs that you would otherwise miss through automated exploratory testing.
- Reduce the time required to test key functionality of applications after updates.
- Selenium: This is an open-source tool used for automating web applications. Selenium can be used for browser-based regression testing.
- Quick Test Professional (QTP): HP Quick Test Professional is automated software designed to automate functional and regression test cases. It uses the VBScript language for automation. It is a Data-driven, Keyword-based tool.
- Rational Functional Tester (RFT): IBM’s rational functional tester is a Java tool used to automate the test cases of software applications. This is primarily used for automating regression test cases and it also integrates with Rational Test Manager.
Regression Testing and Configuration Management:
Configuration Management during Regression Testing becomes imperative in Agile Environments where a code is being continuously modified.
To ensure effective regression tests, observe the following :
- Code being regression testing should be under a configuration management tool
- No changes must be allowed to code, during the regression test phase. Regression test code must be kept immune to developer changes.
- The database used for regression testing must be isolated. No database changes must be allowed
Difference between Re-Testing and Regression Testing:
Retesting means testing the functionality or bug again to ensure the code is fixed. If it is not fixed, Defect needs to be re-opened. If fixed, Defect is closed.
Regression testing means testing your software application when it undergoes a code change to ensure that the new code has not affected other parts of the software.
Challenges in Regression Testing:
Following are the major testing problems for doing regression testing:
- With successive regression runs, test suites become fairly large. Due to time and budget constraints, the entire regression test suite cannot be executed
- Minimizing the test suite while achieving maximum Test coverage remains a challenge
- Determination of the frequency of Regression Tests, i.e., after every modification or every build update or after a bunch of bug fixes, is a challenge.
Conclusion:
An effective regression strategy, save organizations both time and money. As per one of the case studies in the banking domain, regression saves up to 60% time in bug fixes(which would have been caught by regression tests) and 40% in the money.
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