The prove- AIB task can be used to run the test execution for various test and test related alias. However there is some discrepancy because AIB alias's consider every component which lists its self part or AIB_COMPONENTS_EXTRA, but prove task only considers entry's which are directly part of the component.

For example, if you run prove-unittests, a subset of the tests listed in build/unittests.txt will be run, and the that subset is the set of entries which listed themselves directly part of the 'unittests' AIB_COMPONENT, where the complete set is all tests which listed themselves as 'unittests' AIB_COMPONENT or 'unittests' in AIB_COMPONENT_EXTRAS.