public function renderThrowsExceptionIfTheChildNodeRenderingContextIsNotThere()
{
$this->injectDependenciesIntoViewHelper($this->viewHelper);
$this->viewHelper->initializeArguments();
$widgetContext = $this->createMock(\Neos\FluidAdaptor\Core\Widget\WidgetContext::class);
$this->request->expects($this->any())->method('getInternalArgument')->with('__widgetContext')->will($this->returnValue($widgetContext));
$widgetContext->expects($this->any())->method('getViewHelperChildNodeRenderingContext')->will($this->returnValue(null));
$widgetContext->expects($this->any())->method('getViewHelperChildNodes')->will($this->returnValue(null));
$this->viewHelper->render();
}