Follow up cleanup of some unit tests for right click handling. (#27152)

testing/scenario_app/ios/Scenarios/ScenariosUITests/iPadGestureTests.m

@@ -17,50 +17,69 @@ static const NSInteger kSecondsToWaitForFlutterView = 30;
   self.continueAfterFailure = NO;
 }
 
-#ifdef __IPHONE_15_0
+static BOOL performBoolSelector(id target, SEL selector) {
+  NSInvocation* invocation = [NSInvocation
+      invocationWithMethodSignature:[[target class] instanceMethodSignatureForSelector:selector]];
+  [invocation setSelector:selector];
+  [invocation setTarget:target];
+  [invocation invoke];
+  BOOL returnValue;
+  [invocation getReturnValue:&returnValue];
+  return returnValue;
+}
+
+// TODO(85810): Remove reflection in this test when Xcode version is upgraded to 13.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wundeclared-selector"
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
 - (void)testPointerButtons {
-  if (@available(iOS 15, *)) {
-    XCTSkipUnless([XCUIDevice.sharedDevice supportsPointerInteraction],
-                  "Device does not support pointer interaction");
-    XCUIApplication* app = [[XCUIApplication alloc] init];
-    app.launchArguments = @[ @"--pointer-events" ];
-    [app launch];
+  BOOL supportsPointerInteraction = NO;
+  SEL supportsPointerInteractionSelector = @selector(supportsPointerInteraction);
+  if ([XCUIDevice.sharedDevice respondsToSelector:supportsPointerInteractionSelector]) {
+    supportsPointerInteraction =
+        performBoolSelector(XCUIDevice.sharedDevice, supportsPointerInteractionSelector);
+  }
+  XCTSkipUnless(supportsPointerInteraction, "Device does not support pointer interaction.");
+  XCUIApplication* app = [[XCUIApplication alloc] init];
+  app.launchArguments = @[ @"--pointer-events" ];
+  [app launch];
 
-    NSPredicate* predicateToFindFlutterView =
-        [NSPredicate predicateWithBlock:^BOOL(id _Nullable evaluatedObject,
-                                              NSDictionary<NSString*, id>* _Nullable bindings) {
-          XCUIElement* element = evaluatedObject;
-          return [element.identifier hasPrefix:@"flutter_view"];
-        }];
-    XCUIElement* flutterView = [[app descendantsMatchingType:XCUIElementTypeAny]
-        elementMatchingPredicate:predicateToFindFlutterView];
-    if (![flutterView waitForExistenceWithTimeout:kSecondsToWaitForFlutterView]) {
-      NSLog(@"%@", app.debugDescription);
-      XCTFail(@"Failed due to not able to find any flutterView with %@ seconds",
-              @(kSecondsToWaitForFlutterView));
-    }
+  NSPredicate* predicateToFindFlutterView =
+      [NSPredicate predicateWithBlock:^BOOL(id _Nullable evaluatedObject,
+                                            NSDictionary<NSString*, id>* _Nullable bindings) {
+        XCUIElement* element = evaluatedObject;
+        return [element.identifier hasPrefix:@"flutter_view"];
+      }];
+  XCUIElement* flutterView = [[app descendantsMatchingType:XCUIElementTypeAny]
+      elementMatchingPredicate:predicateToFindFlutterView];
+  if (![flutterView waitForExistenceWithTimeout:kSecondsToWaitForFlutterView]) {
+    NSLog(@"%@", app.debugDescription);
+    XCTFail(@"Failed due to not able to find any flutterView with %@ seconds",
+            @(kSecondsToWaitForFlutterView));
+  }
 
-    XCTAssertNotNil(flutterView);
+  XCTAssertNotNil(flutterView);
 
-    [flutterView tap];
-    // Initial add event should have buttons = 0
-    XCTAssertTrue([app.textFields[@"PointerChange.add:0"] waitForExistenceWithTimeout:1],
-                  @"PointerChange.add event did not occur");
-    // Normal tap should have buttons = 0, the flutter framework will ensure it has buttons = 1
-    XCTAssertTrue([app.textFields[@"PointerChange.down:0"] waitForExistenceWithTimeout:1],
-                  @"PointerChange.down event did not occur for a normal tap");
-    XCTAssertTrue([app.textFields[@"PointerChange.up:0"] waitForExistenceWithTimeout:1],
-                  @"PointerChange.up event did not occur for a normal tap");
-    [flutterView rightClick];
-    // Since each touch is its own device, we can't distinguish the other add event(s)
-    // Right click should have buttons = 2
-    XCTAssertTrue([app.textFields[@"PointerChange.down:2"] waitForExistenceWithTimeout:1],
-                  @"PointerChange.down event did not occur for a right-click");
-    XCTAssertTrue([app.textFields[@"PointerChange.up:2"] waitForExistenceWithTimeout:1],
-                  @"PointerChange.up event did not occur for a right-click");
-    NSLog(@"DebugDescriptionX: %@", app.debugDescription);
-  }
+  [flutterView tap];
+  // Initial add event should have buttons = 0
+  XCTAssertTrue([app.textFields[@"PointerChange.add:0"] waitForExistenceWithTimeout:1],
+                @"PointerChange.add event did not occur");
+  // Normal tap should have buttons = 0, the flutter framework will ensure it has buttons = 1
+  XCTAssertTrue([app.textFields[@"PointerChange.down:0"] waitForExistenceWithTimeout:1],
+                @"PointerChange.down event did not occur for a normal tap");
+  XCTAssertTrue([app.textFields[@"PointerChange.up:0"] waitForExistenceWithTimeout:1],
+                @"PointerChange.up event did not occur for a normal tap");
+  SEL rightClick = @selector(rightClick);
+  XCTAssertTrue([flutterView respondsToSelector:rightClick],
+                @"If supportsPointerInteraction is true, this should be true too.");
+  [flutterView performSelector:rightClick];
+  // Since each touch is its own device, we can't distinguish the other add event(s)
+  // Right click should have buttons = 2
+  XCTAssertTrue([app.textFields[@"PointerChange.down:2"] waitForExistenceWithTimeout:1],
+                @"PointerChange.down event did not occur for a right-click");
+  XCTAssertTrue([app.textFields[@"PointerChange.up:2"] waitForExistenceWithTimeout:1],
+                @"PointerChange.up event did not occur for a right-click");
 }
-#endif
+#pragma clang diagnostic pop
 
 @end