render() public method

Renders the submit button.
public render ( ) : string
return string
 /**
  * @test
  */
 public function renderCorrectlySetsTagNameAndDefaultAttributes()
 {
     $mockTagBuilder = $this->getMockBuilder(\TYPO3Fluid\Fluid\Core\ViewHelper\TagBuilder::class)->setMethods(array('setTagName', 'addAttribute'))->getMock();
     $mockTagBuilder->expects($this->any())->method('setTagName')->with('input');
     $mockTagBuilder->expects($this->at(2))->method('addAttribute')->with('type', 'submit');
     $this->viewHelper->injectTagBuilder($mockTagBuilder);
     $this->viewHelper->initialize();
     $this->viewHelper->render();
 }