CTFL-AT Exam Dumps : Certified Tester Foundation Level Agile Tester

The best black box test design technique for verifying the accuracy of this user story is equivalence partitioning. Equivalence partitioning is a technique that divides the input domain of a system into classes or groups that are expected to behave similarly. By testing one value from each class, the tester can reduce the number of test cases while still achieving good coverage. In this case, the input domainof the system is the amount of income, which can be divided into classes based on the tax percentage applied to different income ranges. For example, if the tax percentage is 10% for income below 10,000, 20% for income between 10,000 and 20,000, and 30% for income above 20,000, then the equivalence classes are: low income (<10,000), medium income (10,000-20,000), and high income (>20,000). By testing one value from each class, such as 5,000, 15,000, and 25,000, the tester can verify that the system calculates the correct tax percentage for each income range. This technique is more efficient and effective than testing all possible values of income, or testing only one value of income, or testing the states of income entry, or testing the statements in income calculation. References: ISTQB Foundation Level Agile Tester Syllabus1, Section 2.3.1, page 19; ISTQB Foundation Level Agile Tester Extension Sample Exam Questions2, Question 5, page 6.

As an agile tester, you should work together with the developer, suggesting reasons why the tests are failing. This is an example of the agile principle of collaboration and communication within the team, as well as the agile testing practice of early and frequent feedback. By working together with the developer, you can help to identify and resolve the root causes of the test failures, as well as share your testing knowledge and perspective. This can lead to faster and better quality delivery of the user story, as well as improved team relationships and trust.

Option A is not a good action, because reviewing and improving the design of the user story is not the tester’s responsibility, and it may not address the test failures. Option B is also not a good action, because creating bug reports for blocked tests is not an agile way of handling issues, and it may create unnecessary overhead and waste. Option D is not a good action, because it does not help to unblock the current user story, and it may distract you from the sprint goal and the team’s focus.

References: ISTQB Foundation Level Agile Tester Syllabus, Section 2.3.1, page 171; ISTQB Foundation Level Agile Tester Sample Exam Questions, Question 2.3.1-2, page 82

Testers replace developers in writing unit test automation scripts. Comprehensive Explanation: The integration of development and testing activities in Agile projects is based on the principle of cross-functional teamwork, where all team members collaborate and share their skills and knowledge to achieve a common goal. In the context of testing, this means that testing is not seen as a separate activity or phase, but as an integral part of the development process. Therefore, the following sentences are correct:

• While developers develop automated unit test scripts, testers write automated system level tests. This is an example of how developers and testers can work in parallel and complement each other’s testing efforts. Developers can focus on testing the internal quality of the code, while testers can focus on testing the external quality of the product.
• Developers write acceptance criteria and test cases, together with testers. This is an example of how developers and testers can work together to define and verify the user requirements and expectations. Developers can provide their technical expertise and input, while testers can provide their business and user perspective and feedback.
• Developers and testers may work as a pair to develop and test a feature. This is an example of how developers and testers can work closely and interactively to deliver a feature. Developers and testers can exchange ideas, suggestions, and information, and support each other in the coding and testing tasks.

The following sentence is incorrect:

• Testers replace developers in writing unit test automation scripts. This is not a valid example of the integration of development and testing activities in Agile projects, because it implies that testers take over the responsibility of developers, rather than collaborate with them. Testers should not replace developers in writing unit test automation scripts, because developers have more knowledge and experience in coding and debugging, and because unit testing is an essential part of the development process. Testers should instead work with developers to ensure that the unit test automation scripts are adequate, effective, and maintainable. References: ISTQB® Foundation Level Agile Tester Syllabus1, Section 1.2.1, page 9; ISTQB® Glossary of Testing Terms2, version 4.0, pages 16 and 55.