fix test

Author: Chris Yang

shell/platform/darwin/ios/framework/Source/SemanticsObjectTest.mm

@@ -89,6 +89,23 @@ void AccessibilityObjectDidLoseFocus(int32_t id) override {}
 }  // namespace
 }  // namespace flutter
 
+@interface FakePlatformView : UIView
+
+@property(nonatomic, strong, readonly) UIView* subview;
+
+@end
+
+@implementation FakePlatformView
+
+- (id)_accessibilityHitTest:(CGPoint)point withEvent:(UIEvent*)event {
+  if (_subview) {
+    _subview = [[UIView alloc] init];
+  }
+  return _subview;
+}
+
+@end
+
 @interface SemanticsObjectTest : XCTestCase
 @end
 
@@ -210,8 +227,8 @@ - (void)testAccessibilityHitTestSearchPlatformViewSubtree {
   SemanticsObject* object0 = [[SemanticsObject alloc] initWithBridge:bridge uid:0];
   SemanticsObject* object1 = [[SemanticsObject alloc] initWithBridge:bridge uid:1];
   SemanticsObject* object3 = [[SemanticsObject alloc] initWithBridge:bridge uid:3];
-  UIView* platformView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
-  UIView* subView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 50, 50)];
+  FakePlatformView* platformView =
+      [[FakePlatformView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)];
   FlutterPlatformViewSemanticsContainer* platformViewSemanticsContainer =
       [[FlutterPlatformViewSemanticsContainer alloc] initWithBridge:bridge
                                                                 uid:1
@@ -247,12 +264,13 @@ - (void)testAccessibilityHitTestSearchPlatformViewSubtree {
   [object3 setSemanticsNode:&node3];
 
   CGPoint point = CGPointMake(10, 10);
-  id partialMockPlatformView = OCMPartialMock(platformView);
-  OCMStub([partialMockPlatformView _accessibilityHitTest:point withEvent:nil]).andReturn(subView);
+  // id partialMockPlatformView = OCMPartialMock(platformView);
+  // OCMStub([partialMockPlatformView _accessibilityHitTest:point
+  // withEvent:nil]).andReturn(subView);
   id hitTestResult = [object0 _accessibilityHitTest:point withEvent:nil];
 
   // Focus to object2 because it's the first object in hit test order
-  XCTAssertEqual(hitTestResult, subView);
+  XCTAssertEqual(hitTestResult, platformView.subview);
 }
 
 - (void)testAccessibilityScrollToVisible {