Did you create JMeasurement using Test Driven Development?
Definition from wikipedia.org: "Test-Driven Development (TDD) is a software development technique that involves repeatedly first writing a test case and then implementing only the code necessary to pass the test"
Sorry for the late answer. Sourceforgge doesn't send me EMails anymore.
OK, no i haven't developed this pice of software as TDD. But for the most of the normal actions there is a testcase. I check the coverage of the test not to go under 70% Line coverage and 60% branch coverage. I do not test **.org.* and the *.gui classes. For the testing i use junit and Cobertura.
If you like you can get a fully coverage report.