Details
Description
Error messages from org.apache.wicket.util.tester.WicketTester#assertComponentOnAjaxResponse(java.lang.String) are not very helpful at the moment because they don't mention the component id/path that is not found in the Ajax response.
One has to use the stacktrace to figure out which component is failing.
This could be improved by adding the component info (Component#toString(false)) in the error messages.