What is the main purpose of using test metrics?

The main purpose of using test metrics is to measure the effectiveness of testing. By quantifying different aspects of the testing process, such as defect density, test case execution rates, and test coverage, teams can gain valuable insights into how well testing activities are performing. This allows for informed decision-making and can highlight areas where the testing process can be improved. For instance, measuring the number of defects found in relation to the number of test cases executed can help gauge whether the testing was thorough and effective.

Effective test metrics facilitate communication about the testing process to stakeholders, providing a factual basis for discussions about quality and risk assessment. They can also assist in resource allocation, helping teams to identify where additional testing efforts might be necessary to improve overall product quality.

In contrast, the other options do not align with the primary purpose of test metrics. Enforcing team deadlines relates more to project management than to measuring testing effectiveness. Interviewing users focuses on gathering requirements or feedback rather than evaluating the quality of the testing process itself. Documenting software requirements is part of the development process and not directly related to assessing the outcomes of testing activities.