Mock CLLocationManager (swift) for Testing

Question 1

Before I actually start writing something myself are there existing frameworks (either obj-c or swift) that wrap CLLocationManager into a mocking framework?

Question 2

What is the best way to go about making a mock Location Manager?

• 
  

  Create a class that wraps around CLLocationManager, any calls into that class will return test data or actual CLLocation data depending on what "mode" we are running in

  
  


• 
  

  Extend CLLocationManager and override all the calls I want to "muck" with

  
  


• 
  

  Is there a 3rd option I haven't thought of?

  
  

Mostly I'm wondering what the pro/con of each approach would be here assuming there isn't anything already available

[edit]

Although there is a simulate location feature in XCode it does not give me exactly what I need. If I remember correctly it does not do headings, they have to be interpolated. Furthermore I may ultimately modify this class to drive CLLocationManager from a flight simulator