IS-04-01 test_23 not working with Node having both senders and receivers and sharing a group name

[alabou]

Senders and Receivers of a given Node may share the same group name as allowed by "Senders and Receivers may both contain matching values of the urn:x-nmos:tag:grouphint tag, indicating that the group has elements in both signal flow directions." from https://specs.amwa.tv/nmos-parameter-registers/branches/main/tags/grouphint.html#natural-groups

test_23 combines senders and receivers of a Node and will detect duplicates that are valid according to the above statement.

[garethsb]

Ha, wonderful how that contradicts "The role of the resource in the group, MUST be unique inside the same group."

I guess this code should take resource type into account...

https://github.com/AMWA-TV/nmos-testing/blob/14c255e05f2bff29b9073ffd2bc040144b60b4d1/nmostesting/suites/IS0401Test.py#L1567-L1573