If you have multiple test tasks then the jacoco plugin will add a report task for each test task. These report tasks are finalised by the buildDashboard task so if they run then the dashboard will be updated. However the report tasks do not finalise the test task so I can see no obvious way to make them run when the tests run.
Is there a simple way to do this? if not, it would be nice if the plugin could be configured to do this automatically