CB-7663 - prep for unit tests

src/ios/CDVSplashScreen.m

@@ -19,6 +19,7 @@
 
 #import "CDVSplashScreen.h"
 #import <Cordova/CDVViewController.h>
+#import <Cordova/CDVScreenOrientationDelegate.h>
 
 #define kSplashScreenDurationDefault 0.25f
 
@@ -116,8 +117,7 @@
     [self.viewController.view removeObserver:self forKeyPath:@"bounds"];
 }
 
-// Sets the view's frame and image.
-- (void)updateImage
+- (NSString*)getImageName:(id<CDVScreenOrientationDelegate>)screenOrientationDelegate
 {
     UIInterfaceOrientation orientation = self.viewController.interfaceOrientation;
     
@@ -157,6 +157,14 @@
         }
     }
     
+    return imageName;
+}
+
+// Sets the view's frame and image.
+- (void)updateImage
+{
+    NSString* imageName = [self getImageName:(id<CDVScreenOrientationDelegate>)self.viewController];
+
     if (![imageName isEqualToString:_curImageName]) {
         UIImage* img = [UIImage imageNamed:imageName];
         _imageView.image = img;