[ios, macos] Testify MGLMapView gesture recognizer example

platform/darwin/scripts/update-examples.js

@@ -108,10 +108,10 @@ function completeExamples(os) {
         }
         
         // Resolve conditional compilation blocks.
-        example = example.replace(/^(\s*)#if\s+os\((iOS|macOS)\)\n([^]*?)(?:^\1#else\n([^]*?))?^\1#endif\n/gm,
+        example = example.replace(/^(\s*)#if\s+os\((iOS|macOS)\)\n([^]*?)(?:^\1#else\n([^]*?))?^\1#endif\b\n?/gm,
                                   function (m, indentation, ifOs, ifCase, elseCase) {
           return (os === ifOs ? ifCase : elseCase).replace(new RegExp('^    ', 'gm'), '');
-        });
+        }).replace(/\n$/, '');
         
         // Insert the test method contents into the documentation comment just
         // above the substructure.

platform/darwin/test/MGLDocumentationExampleTests.swift

@@ -217,4 +217,25 @@ class MGLDocumentationExampleTests: XCTestCase, MGLMapViewDelegate {
 
         XCTAssertNotNil(mapView.style?.layer(withIdentifier: "contour"))
     }
+    
+    func testMGLMapView() {
+        //#-example-code
+        #if os(macOS)
+            class MapClickGestureRecognizer: NSClickGestureRecognizer {
+                override func shouldRequireFailure(of otherGestureRecognizer: NSGestureRecognizer) -> Bool {
+                    return otherGestureRecognizer is NSClickGestureRecognizer
+                }
+            }
+        #else
+            let mapTapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(myCustomFunction))
+            for recognizer in mapView.gestureRecognizers! where recognizer is UITapGestureRecognizer {
+                mapTapGestureRecognizer.require(toFail: recognizer)
+            }
+            mapView.addGestureRecognizer(mapTapGestureRecognizer)
+        #endif
+        //#-end-example-code
+    }
+    
+    // For testMGLMapView().
+    func myCustomFunction() {}
 }

platform/ios/src/MGLMapView.h

@@ -84,6 +84,7 @@ typedef NS_ENUM(NSUInteger, MGLAnnotationVerticalAlignment) {
  for recognizer in mapView.gestureRecognizers! where recognizer is UITapGestureRecognizer {
      mapTapGestureRecognizer.require(toFail: recognizer)
  }
+ mapView.addGestureRecognizer(mapTapGestureRecognizer)
  ```
  
  @note You are responsible for getting permission to use the map data and for