Which gem to choose for rails api testing?

Question

Ruby on Rails

I heard about rspec, and I even know it basicly.
Once I failed an interview with the task:
How to test a paid api without referring to it.
I wonder what he meant.
In general, it’s interesting just to understand what basic points need to be taken into account or pleasantly applied? when testing

Answer 1

https://github.com/vcr/vcr
You can do this. The idea is that you write the API response once and then you can put it as many times as you like in the tests and update the responses if necessary.
In order not to use the API at all, you can simply emulate all the API responses inside the spec https://robots.thoughtbot.com/how-to-stub-external...