Hi folks,
Was just reusing this Cases_Test to play around with BDDFramework: not sure it was on purpose or not, but the tests did their purpose :)
The above was being caused by a bug on Cases_API\REST\ContactFind.ContactId output: it should be sent in Header, not in Body (just like the other output, Count).
...once changed (to Header), tests work all fine.
Cheers!