There are three main steps to be followed while dealing with HTTPretty:

We should enable HTTPretty initially, so that it will apply monkey patching; that is, a dynamic replacement of the attributes of the socket module. We will be using the function register_uri for registering the uniform resource locator. The register_uri function takes class, uri and body as arguments:

   method: register_uri(class, uri, body)

And at the end of our testing process, we should disable HTTPretty so that it doesn't alter the behavior of the other. Let us take a look at using HTTPretty with an example:

import httpretty
import requests
from sure import expect
 
def example():
    httpretty.enable()
    httpretty.register_uri(httpretty.GET, "http://google.com/",
                           body="This is the mocked body",
                           status=201)
    response = requests.get("http://google.com/")
    expect(response.status_code).to.equal(201)
    httpretty.disable()

In this example, we used the httpretty.GET class in register_uri function to register the uri value that is "http://google.com/". In the next line, we used Request to get the information from the URI and then we used the expect function to assert the expected status code. In a nutshell, the preceding code tries to mock the URI and tests whether we are getting the same status code as expected.

We can simplify the preceding code using a decorator. As in the first and third step, that is, enabling and disabling HTTPretty are same all the time, we can use a decorator so that those functions get wrapped up whenever we want them to come into the picture. The decorator looks like this: @httpretty.activate. The previous code example can be rewritten using a decorator in the following way:

import httpretty
import requests

from sure import expect

@httpretty.activate
def example():
    httpretty.register_uri(httpretty.GET, "http://google.com/",
                           body="This is the mocked body",
                           status=201)
    response = requests.get("http://google.com/")
    expect(response.status_code).to.equal(201)