Not all features are supported for all test frameworks, and the following table gives a brief overview of support status:
|security manager support||Y||N||N||N||N|
|run >1 individual test method in a class||N||Y||Y||N||N|
Legend: Y means supported, N means not supported. ? means not tested.
If you would like to implement support for a given provider with an N or a ? (or create tests for it), you should create a patch and mark the issue is an improvement. If there is something wrong with an implementation marked with "Y" it's a bug.