Intellij Idea How to show tests covering line

Question

I'm using IDEA in order to analyze our code coverage. I can see that some lines were called N number of times. But I also want to know which test caused that line call. I see the appropriate button "Show tests covering line", but this button is disabled for all of the lines.

So what is the reason of that behavior and is it possible to force IDEA to show tests which called a particular line of the code

Answer 1

From the docs:

This button is only available in the Tracing mode, and with the Track per test coverage check box selected

You can enable tracing and 'track test per coverage' in the Run/Debug window. Here's a screenshot:

More details in the docs.