This could become a Two Cream Puff Day....Yes, it is advisable to explain that in the real world, yes, True Engineers LOVE the people who do not have to spend long intellectual amounts of time planning the edge test cases, but merely establish them by the process of doing exactly what they had been briefed....
No Honest. Trust ME, Engineering really loves you when you do what they said you were suppose to do, and that actually shows one or more Oopsie...
And Rememer,
Step One is Open The Radar - and document the underexpected experience...