How to mock location service using KIF-framework

Question

I use KIF framework (http://github.com/kif-framework/KIF) for UI Tests and I need to mock location service.

The problem is location service starts BEFORE KIF method -beforeAll invoked. So it's too late to mock.

Any suggestions would be appreciated.

Answer 1

In my KIF target I have a BaseKIFSearchTestCase : KIFTestCase, where I overwrite CLLocationManager`s startUpdatingLocation in a category.

Note that this is the only category overwrite I ever made as this is really not a good idea in general. but in a test target I can accept it.

#import <CoreLocation/CoreLocation.h>

#ifdef TARGET_IPHONE_SIMULATOR


@interface CLLocationManager (Simulator)
@end

@implementation CLLocationManager (Simulator)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-protocol-method-implementation"

-(void)startUpdatingLocation 
{
    CLLocation *fakeLocation = [[CLLocation alloc] initWithLatitude:41.0096334 longitude:28.9651646];
    [self.delegate locationManager:self didUpdateLocations:@[fakeLocation]];
}
#pragma clang diagnostic pop

@end
#endif // TARGET_IPHONE_SIMULATOR



#import "BaseKIFSearchTestCase.h"

@interface BaseKIFSearchTestCase ()

@end

@implementation BaseKIFSearchTestCase
 //...

@end

---

Cleaner would be to have a subclass of CLLocationManager in your application target and another subclass with the same name in your test target that send fake location like shown above. But if this is possible depends on how your test target is set up, as it actually need to be an application target as Calabash uses it.

---

Yet another way:

• in your project create another configuration "Testing", cloning "Debug"

• add the Preprocessor Macro TESTING=1 to that configuration.

• Subclass CLLocationManager

• use that subclass where you would use CLLocaltionManger

• conditionally compile that class

  #import "GELocationManager.h"
  
  @implementation GELocationManager
  -(void)startUpdatingLocation
  {
  
  #if TESTING==1
  #warning Testmode
  
  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
          CLLocation *fakeLocation = [[CLLocation alloc] initWithLatitude:41.0096334 longitude:28.9651646];
          [self.delegate locationManager:self didUpdateLocations:@[fakeLocation]];
      });
  
  #else
      [super startUpdatingLocation];
  #endif
  
  }
  @end
  

• in your test targets scheme choose the new configuration

---

And yet another option:

Probably the best: no code needs to be changed.