Example on how to test an Observable

TestObservable.java

@Test
public void testJson() throws Exception {
  Observable<String> jsonObservable = MockResponse.generateJson(736L, 1, 1000, 5);
  String json = jsonObservable.toBlocking().single();
  System.out.println(json);
  assertTrue(json.startsWith("{\"responseKey\":" + MockResponse.getResponseKey(736L) + ",\"delay\":1,\"itemSize\":1000,\"numItems\":5,\"items\""));
  System.out.println("json: " + json);
}