Which of the following testing methods tests the system efficiency by systematically selecting the suitable and minimum set of tests that are required to effectively cover the affected changes?
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A. B. C. D.changes.
Answer: A is incorrect.
Unit testing is a type of testing in which each independent unit of an application is tested separately.
During unit testing, a.
Regression testing focuses on finding defects after a major code change has occurred.
Specifically, it seeks to uncover software regressions, or old bugs that have come back.
Such regressions occur whenever software functionality that was previously working correctly stops working as intended.
Typically, regressions occur as an unintended consequence of program changes, when the newly developed part of the software collides with the previously existing code.
Regression testing tests the system efficiency by systematically selecting the suitable and minimum set of tests that are required to effectively cover the affected developer takes the smallest unit of an application, isolates it from the rest of the application code, and tests it to determine whether it works as expected.
Unit testing is performed before integrating these independent units into modules.
The most common approach to unit testing requires drivers and stubs to be written.
the application before its implementation into the production environment.
It is done either by a client or an application specialist to ensure that the software meets against a software design.
Software components may be integrated in an iterative way or all together ("big bang")
Normally the former is considered a better practice since it allows interface issues to be localized more quickly and fixed.
Integration testing works to expose defects in the interfaces and interaction between the integrated components (modules)
Progressively larger groups of tested software components corresponding to elements of the architectural design are integrated and tested until the software works as a system.
The testing method described in the question is called regression testing, which is option D.
Regression testing is the process of testing software to ensure that recent changes or updates to the software have not introduced new errors or caused previously working functionality to fail. It is used to verify that changes made to the software have not negatively impacted the existing functionality of the system.
Regression testing involves executing a selected set of test cases that are designed to cover the affected changes. The test cases are selected based on the changes made to the software, and they are executed to ensure that the changes have not introduced any new bugs or issues.
In addition to verifying that the changes made to the software have not introduced new issues, regression testing also helps to ensure that the software continues to meet the requirements and specifications that were previously established.
The other testing methods mentioned in the question are as follows:
A. Unit testing is a testing method that focuses on testing individual units or components of software in isolation. It is typically performed by developers and is used to ensure that each component of the software functions as intended.
B. Integration testing is a testing method that involves testing how different components of software work together. It is used to verify that the components integrate with each other correctly and that they can communicate and exchange data as expected.
C. Acceptance testing is a testing method that involves testing whether the software meets the requirements and specifications that were established at the beginning of the development process. It is typically performed by end-users or stakeholders to ensure that the software meets their needs and expectations.
In conclusion, regression testing is the testing method that tests the system efficiency by systematically selecting the suitable and minimum set of tests that are required to effectively cover the affected changes. It is a crucial testing method in software development that helps to ensure that software changes do not introduce new issues or negatively impact the existing functionality of the system.