Is your feature request related to a problem? Please describe.
The unit tests and API documentation should match, where all status codes in the API documentation are tested in a unit test, and likewise all codes being tested for are documented in the API.

Describe the solution you'd like
Resolve the following mismatches:

File src/os/inc/osapi-idmap.h, function OS_GetResourceName():
NO CURRENT TESTS - Test cases and retvals likely need to be added

File src/os/inc/osapi-idmap.h, function OS_ConvertToArrayIndex():

• ONLY IN DOXY: OS_ERR_INCORRECT_OBJ_TYPE
• ONLY IN DOXY: OS_SUCCESS

File src/os/inc/osapi-idmap.h, function OS_ObjectIdToArrayIndex():

• ONLY IN DOXY: OS_ERR_INCORRECT_OBJ_TYPE
• ONLY IN DOXY: OS_ERR_INVALID_ID
• ONLY IN DOXY: OS_INVALID_POINTER
• ONLY IN DOXY: OS_SUCCESS

Additional context
Originally noted in #331, split into separate work items.

Requester Info
Joseph Hickey, Vantage Systems, Inc.