What is NOT measured by test coverage?

Test coverage is a metric that helps in evaluating the extent to which the software has been tested. It provides insights into various aspects of the testing process, such as which parts of the code have been executed during testing and how thoroughly different areas of the software have been assessed.

Choosing quality of the tests performed as the aspect that is not measured by test coverage is accurate because test coverage focuses on quantitative metrics—like the number of test cases executed, the areas of the code tested, and the overall coverage of the testing effort. However, it does not address qualitative factors, such as the effectiveness, relevance, or depth of those test cases. Test coverage cannot determine whether the tests are good or if they are adequately designed to uncover defects; it simply indicates what has been tested without evaluating the quality of those tests.