test(object-ref-spec): add toHaveBeenCalledWith tests for get and update functions

- add toHaveBeenCalledWith to test get method
- add test when invoking get without fields in the passed options parameter to return rejected promise
- add toHaveBeenCalledWith to updatemethod spec
- add tests when invoking 'updatewithout ops in the passedoptions` parameter to return rejected promise
- add toHaveBeenCalledWith to delete method spec

closes REALLY-78