Comment 1 for bug 782117

One easy case for understanding: One test tests the generation of test data. It is listed in the middle of the tests. Many tests are using this funtionality and if they doesn't work, they are red. If the fundametal tests run first, it is more clear what error should be searched.

In this case it was not so heavy to find, but it show, what I mean. Of course we can now select by category manually, but automatically sorting is quite better way.