Test and Handle Discovery #

This document is about how cocotb discovers and stores handles once initialized after vlog_startup_routine.

1. __init__.py is eventually called, which calls get_root_handle to get you dut
2. CHECK_AND_STORE(dut)
3. Adds dut to a vector of GpiObjHdl - handle_map
4. python creates SimHandle(dut)
5. starts test via regression_manager._execute
6. ???? still need to figure out how it discovers each VpiHandle when a test initializes