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10 Advantages of Testing in Agile Methodology

October 1, 2017
Testing in Agile, Agile Testing, Agile Testing Methodology, Testing in Agile Scrum

1. Testers in  involvement is from the beginning till end when Testing in Agile

Team Testing in Agile participates since the beginning i.e. right from sprint planning till sprint demo and retrospective meeting. Hence, parallel to developers, they get a chance to review requirements; identify scope, dependencies, and complexity; plan their efforts better. Moreover, they are at par with developers in terms of product and/or business knowledge and can suggest many scenarios to developers to take care while writing code. 

2. Quality of deliverables is the responsibility of the entire team, not only of testers

The user stories that the agile team delivers at the end of the sprint is accepted by product owner only if they are developed as well as tested as expected. It is the collective responsibility of the team to deliver the quality product. Hence unlike waterfall model, it is not just the testers but the developers are also equally responsible for poor quality of the software.

3. Testing is also done by developers, and not only by testers

In agile, developers and testers both perform testing. Developers perform automated unit testing which helps in removing bugs in the very beginning before it reaches to the tester. This helps testers to focus more on functional, integration and regression testing. Ultimately, it results in improved product quality.

4. Facilitates early testing of the product in development

In traditional waterfall, testing phase starts post development is completed. However, in agile, testing and development activities run in parallel. As Agile delivers daily builds using Continuous Integration, testers get updated builds immediately to test the latest code developed.

5. Implementing changes in requirement or functionality is easier and faster

Nature of waterfall model is such that a scope once agreed and fixed, shouldn’t be changed until the product is developed covering entire list of features. Sometimes, the additional cost is also involved to accommodate these changes considering the scope of change and the number of functionalities getting impacted because of that change. Against this, if any such defect is found during testing which needs scope change or requirement change, such changes can be immediately communicated to product owner or client and can be considered within upcoming sprint itself.

6. Testers have sufficient time to write test cases and test the application

Post sprint planning, testers have a clear idea about what they are going to test, when the functionality will be ready for testing, etc. Therefore, while developers are writing the code, testers can concentrate on writing the test cases and identifying test data. Meaning, ideally testers are ready with their artifacts on or before the code is delivered for testing.

7. Time and Cost of fixing the defects are reduced to a great extent

In a traditional waterfall model, to fix a defect that is found in a testing phase, it has to pass through the entire software development lifecycle right from Requirement Analysis till Software Development followed by Software Testing depending on the nature and analysis of the defect. This not only eats up time of the team but also increases the cost since extra efforts are involved. While in the Agile model, defects are fixed within the same sprint itself resulting into much more reduced time and cost.

8. Improved communication among testers and developers

Agile teams are expected to be co-located i.e. all team members viz. scrum master, developers, testers, architects, content writers, etc. should be sitting in the same location. And since they are sitting and working together, informal communication happens frequently and that plays a major role in improved quality and faster delivery of the product.

9. Can’t skip testing in Agile

As discussed above, for a user story to get accepted it needs to be developed as well tested. Since testing in agile plays a major role in the improved quality of the software, it can’t be neglected. The scope of testing in agile may vary based on nature of functionality, but it can’t be skipped altogether.

10. Testers’ end-to-end knowledge of the application helps improving product quality

Since testers are expected to test an entire application and end-to-end scenarios rather than limiting themselves doing functional testing or module testing, they have better knowledge of entire product functionality. In such situations, they can provide ideas to improve the product from end user’s point of view. Also, they can provide scenarios to developers earlier before the coding is started, which overall will reduce the number of defects found while testing and thus improving product quality.

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