unit test fix

lib/ios/RNNNavigationOptions.m

 			backgroundImageView = [[UIImageView alloc] initWithFrame:viewController.view.bounds];
 			[viewController.view insertSubview:backgroundImageView atIndex:0];
 		}
-		
+
 		backgroundImageView.layer.masksToBounds = YES;
-		backgroundImageView.image = [RCTConvert UIImage:self.backgroundImage];
+		backgroundImageView.image = [self.backgroundImage isKindOfClass:[UIImage class]] ? (UIImage*)self.backgroundImage : [RCTConvert UIImage:self.backgroundImage];
 		[backgroundImageView setContentMode:UIViewContentModeScaleAspectFill];
 	}
 	
 			backgroundImageView = [[UIImageView alloc] initWithFrame:viewController.view.bounds];
 			[viewController.navigationController.view insertSubview:backgroundImageView atIndex:0];
 		}
-		
+
 		backgroundImageView.layer.masksToBounds = YES;
-		backgroundImageView.image = [RCTConvert UIImage:self.rootBackgroundImage];
+		backgroundImageView.image = [self.rootBackgroundImage isKindOfClass:[UIImage class]] ? (UIImage*)self.rootBackgroundImage : [RCTConvert UIImage:self.rootBackgroundImage];
 		[backgroundImageView setContentMode:UIViewContentModeScaleAspectFill];
 	}
 	

lib/ios/ReactNativeNavigationTests/RNNRootViewControllerTest.m

 	self.pageName = @"somename";
 	self.componentId = @"cntId";
 	self.emitter = nil;
-	self.options = [RNNNavigationOptions new];
+	self.options = [[RNNNavigationOptions alloc] initWithDict:@{}];
 	self.uut = [[RNNRootViewController alloc] initWithName:self.pageName withOptions:self.options withComponentId:self.componentId rootViewCreator:self.creator eventEmitter:self.emitter isExternalComponent:NO];
 }
 
 	self.options.backgroundImage = backgroundImage;
 	__unused UINavigationController* nav = [[UINavigationController alloc] initWithRootViewController:self.uut];
 	[self.uut viewWillAppear:false];
+	
 	XCTAssertTrue([[(UIImageView*)self.uut.view.subviews[0] image] isEqual:backgroundImage]);
 }