Measuring testing success can be done by using quantitative indicators that reflect the performance, coverage, and reliability of your testing activities. Examples of these testing metrics include test execution time, test coverage, test results, and test efficiency. These metrics can help you pinpoint the strengths and weaknesses of your testing process, in addition to areas that need to be improved or optimized. For instance, test execution time will give insight into how long it takes to run all the test cases or a subset of them. Test coverage will measure how much of the code, functionality, or requirements are tested by the test cases. Test results will show how many tests pass, fail, or are skipped, as well as how many defects are found and fixed. And finally, test efficiency will indicate how much effort, resources, or cost are required to achieve a certain level of test coverage or quality.