anchor.diff:            ]);
           }
   
  -        tearDown(() {
  -          mountNode = null;
  -        });
  -
           testContext = react.createContext(1);
           useContextTestFunctionComponent =
               react.registerFunctionComponent(UseContextTestComponent, displayName: 'useContextTest');
  
positive.code:     });
  
      group('useContext -', () {
        var mountNode = DivElement();
        _ContextProviderWrapper providerRef;
        int currentCount = 0;
        Context<int> testContext;
        Function useContextTestFunctionComponent;
  
        setUp(() {
          UseContextTestComponent(Map props) {
            final context = useContext(testContext);
            currentCount = context;
  
negative.code:       });
  
        tearDown(() {
          mountNode = null;
          currentCount = 0;
          testContext = null;
          useContextTestFunctionComponent = null;
  