anchor.diff:  
         final EditableTextState editableText = tester.state(find.byType(EditableText));
         expect(editableText.selectionOverlay!.handlesAreVisible, isTrue);
  -      expect(editableText.selectionOverlay!.toolbarIsVisible, isTrue);
  +      expect(editableText.selectionOverlay!.toolbarIsVisible, isContextMenuProvidedByPlatform ? isFalse : isTrue);
       },
     );
   
  
positive.code:       );
  
        // Selected text shows 3 toolbar buttons.
        expect(find.byType(CupertinoButton), findsNWidgets(3));
      },
    );
  
  
negative.code:       );
  
        // Long press toolbar.
        expect(find.byType(CupertinoButton), isContextMenuProvidedByPlatform ? findsNothing : findsNWidgets(2));
      },
    );
  
  