[johns]

What do you use for your existing tests? VCR?

[city41]

We've rolled our own system inside Jasmine that mocks out XHR. It's generally in the form of:

    @ajax.whenQuerying('someendpoint').respondWith(someData)

And internal to that system we have some components that understand the overall shape of our data model so someData can be a very small, simple object with just the data the test cares about and the internals flesh out the rest.