IntelliJ IDEA 11.1 introduces a new way of browsing the gathered coverage information through a dedicated Coverage View.
This view aggregates the coverage details over a configured scope in one place. It provides ability to sort data by coverage percentage, what can be used for detection of code which is not enough covered by tests.
As always quick navigation, scroll from/to source, flatten packages mode are available in Coverage View for an easy work with the results. It also allows generating HTML report right from the view.
Please note, that the view is also available for Python, Ruby and PHP coverage plugins.