ctrl_pool (formerly hscPipeBase) is being ported with no unit tests - the only testing is an example script that can be run by hand to demonstrate a piece of the functionality.

Some functionality may simple not be amenable to tests (such as batch submission). Other parts may be tricky to run via SCons because they're intrinsically parallel, and SCons naively wants to be able to run each test in a separate process. Overcoming those problems is the reason this is challenging - there isn't really that much functionality to test.