How are integration tests written for interacting with external API?

Question

First up, where my knowledge is at:

Unit Tests are those which test a small piece of code (single methods, mostly).

Integration Tests ar

Answer 1

This is more an additional answer to the one already given:

Looking through your code, the class GoogleAPIRequest has a hard-encoded dependency of class Request. This prevents you from testing it independently from the request class, so you can't mock the request.

You need to make the request injectable, so you can change it to a mock while testing. That done, no real API HTTP requests are send, the live data is not changed and you can test much quicker.