public function testProxyFields()
 {
     $this->annotationManager->shouldReceive('getClassAnnotations')->andReturn(array());
     $this->pageFactory->shouldReceive('createDecorator')->andReturn($this->createNullDecorator());
     $decorator = m::mock($this->decoratorClass);
     $decorator->shouldReceive('decorate')->andReturnUsing(function (Property $property) {
         return $property->name == 'elementWithUse' ? 'OK' : null;
     });
     $page = new $this->pageClass($this->pageFactory);
     $this->realFactory->initElements($page, $decorator);
     $this->assertEquals('OK', $page->elementWithUse);
 }