render() public method

Renders the upload field.
public render ( ) : string
return string
 /**
  * @test
  */
 public function hiddenFieldsContainDataOfBoundPropertyIfNoValueArgumentIsSetAndNoResourceHasBeenUploaded()
 {
     $mockResourceUuid = '79ecda60-1a27-69ca-17bf-a5d9e80e6c39';
     /** @var Result|\PHPUnit_Framework_MockObject_MockObject $mockValidationResults */
     $mockValidationResults = $this->getMockBuilder(Result::class)->disableOriginalConstructor()->getMock();
     $mockValidationResults->expects($this->atLeastOnce())->method('hasErrors')->will($this->returnValue(false));
     $this->request->expects($this->atLeastOnce())->method('getInternalArgument')->with('__submittedArgumentValidationResults')->will($this->returnValue($mockValidationResults));
     /** @var PersistentResource|\PHPUnit_Framework_MockObject_MockObject $mockPropertyResource */
     $mockPropertyResource = $this->getMockBuilder(PersistentResource::class)->disableOriginalConstructor()->getMock();
     $mockFormObject = array('foo' => $mockPropertyResource);
     $this->viewHelperVariableContainerData[FormViewHelper::class] = array('formObjectName' => 'someObject', 'formObject' => $mockFormObject);
     $mockPersistenceManager = $this->createMock(PersistenceManagerInterface::class);
     $mockPersistenceManager->expects($this->once())->method('getIdentifierByObject')->with($this->identicalTo($mockPropertyResource))->will($this->returnValue($mockResourceUuid));
     $this->inject($this->viewHelper, 'persistenceManager', $mockPersistenceManager);
     $this->viewHelper->setArguments(array('property' => 'foo'));
     $expectedResult = '<input type="hidden" name="someObject[foo][originallySubmittedResource][__identity]" value="' . $mockResourceUuid . '" />';
     $actualResult = $this->viewHelper->render();
     $this->assertSame($expectedResult, $actualResult);
 }