Test data fetcher

[knjk04]

Test the BookDataFetcher using the codegen provided by DGS

[knjk04]

Blocked by #63

[mreza-kiani]

hi @knjk04 Since the #63 issue is closed now, can I work on this issue?

[knjk04]

Hi @mreza-kiani, sure. Thanks, I forgot this was blocked.

[mreza-kiani]

Thank you @knjk04. Can you please describe the task a little more so I can start working on it?

[knjk04]

Similar to this DGS example, we're looking to assert that we get back the expected response

[knjk04]

@mreza-kiani How are you getting on with this?

[knjk04]

@mreza-kiani Unassigning due to no response