shadows/httpclient/src/main/java/org/robolectric/shadows/httpclient/FakeHttp.java
public static void addHttpResponseRule(String method, String uri, HttpResponse response) {
    getFakeHttpLayer().addHttpResponseRule(method, uri, response);
  }
public static void addHttpResponseRule(String method, String uri, HttpResponse response) {
    getFakeHttpLayer().addHttpResponseRule(method, uri, response);
  }
Adds an HTTP response rule. The response will be returned when the rule is matched.

@param method   method to match.
@param uri      uri to match.
@param response response to return when a match is found.