Ah - I'm being confused by the "should be" language, which isn't actually talking about reality, it's just some random text, isn't it ?  A s/should be/burble wirgle/g applied here and to the body check's vars stanza would be entirely as good, IIUC.  I suggest s/should be/looks like/ or some similar, it'd be less confusing !  Uses of "should" in a test sound like their semantics matter ...