Migrate test cases to mimic aireos tests

[jmcgill298]

Would like to evaluate current mock setup and see if there is a better way to write the mocks

[jmcgill298]

@shakefu can you take this one?

[jmcgill298]

#131 is an example of migrating to use pytest and fixtures. This approach allows easier mechanism to provide different mock data for the same command