So far, this is looking really good!

A few things however will still need to be done. In case they are not already on your todo list:

• this should be enabled by default. Otherwise, no one will ever see it, find it, discover it whatever...
• when the mouse is moved over the pop-up, it should gain focus. Just like when you move the mouse over a javadoc popup.
• display the test result: PASS|FAIL in the popup - even just by using the same icon as in the 'Test Contributions' panel.
• the pop-up seems to be very wide, even when the test names are very short.
• the cursor should change to a pointer when the user hovers over a test name to indicate it is actually an action/link
• the text: "Covered by 1 test runs" needs to be pluralized.
• is it possible to display the test in a tree - and make it look similar/the same as "test contributions" ?