Simulate slow network response

[David Suna]

I have an application that uses AngularJs which puts up a loading message while an API call is being made. I would like to simulate a slow response from the server so that I can check for the loading message. Is there a way to have zombie send out a call but not complete the response for a specified amount of time? I am using cucumber js to write end to end tests in gherkin so I would like for all of this to work through that test framework.

Any information or pointers would be appreciated.

Thanks.