When the aggregated coverage results in Simulink Test Manager displays "--" as a subsystem's execution, it means that there is no block that receives coverage. Blocks that receive coverage must be non-virtual blocks. The subsystem that did not receive any coverage and showed "--" in the Simulink Test Manager may contain solely virtual blocks, thus the subsystem did not receive coverage. You can use the "find_system" command to list virtual and non-virtual buses as seen below:
% finds all non-virtual blocks in the current system
>> non_virtual_block = find_system(gcs, 'FollowLinks', 'on', 'Virtual', 'off')
% finds all virtual blocks in the current system
>> virtual_block = find_system(gcs, 'FollowLinks', 'on', 'Virtual', 'on')
For more information on the "find_system" function, please consult the link below:
For more information on virtual versus non-virtual blocks, please consult the link below:
