[x] Happy paths
[x] Function/implementation/tester as stored persistent objects
[x] Function/implementation/tester as inline objects
[x] All implementations requested
[x] Specific implementations requested
[x] All testers requested
[x] Specific testers requested
[ ] Failure paths
[x] Running on an unknown ZObject as function
[x] Running on a known but non-function ZObject
[x] Running on an unknown ZObject as implementation
[x] Running on a known but non-implementation ZObject
[x] Running on an unknown ZObject as tester
[x] Running on a known but non-tester ZObject
[x] Implementation raised an error
[x] Tester raised an error
[ ] Response was a failure; expected and actual results are injected
[ ] Infrastructure failure paths
[ ] Server not connected
[ ] Server responded oddly
[ ] General exception on run