Recommended method for closing coverage is to have test to run with multiple seeds , but many times certain scenarios can never be covered by the randomness and we require a directed test case. The way to write a directed test in UVM is as follows.
- Disable the regular sequence from executing on the sequencer by setting count as 0 in the directed test case.
set_config_int("*.sequencer", "count", 0);
- randomize the sequence in the directed way and execute the sequence on the sequencer using execute_item() method.
success = item.randomize();