render() public method

Iterates through selected errors of the request.
public render ( string $for = '', string $as = 'validationResults' ) : string
$for string The name of the error name (e.g. argument name or property name). This can also be a property path (like blog.title), and will then only display the validation errors of that property.
$as string The name of the variable to store the current error
return string Rendered string
 /**
  * @test
  */
 public function renderAddsValidationResultsForOnePropertyIfForArgumentIsNotEmpty()
 {
     $mockPropertyValidationResults = $this->getMockBuilder(\Neos\Error\Messages\Result::class)->getMock();
     $mockValidationResults = $this->getMockBuilder(\Neos\Error\Messages\Result::class)->getMock();
     $mockValidationResults->expects($this->once())->method('forProperty')->with('somePropertyName')->will($this->returnValue($mockPropertyValidationResults));
     $this->request->expects($this->atLeastOnce())->method('getInternalArgument')->with('__submittedArgumentValidationResults')->will($this->returnValue($mockValidationResults));
     $this->templateVariableContainer->expects($this->at(0))->method('add')->with('validationResults', $mockPropertyValidationResults);
     $this->viewHelper->expects($this->once())->method('renderChildren');
     $this->templateVariableContainer->expects($this->at(1))->method('remove')->with('validationResults');
     $this->viewHelper->render('somePropertyName');
 }