ButtonViewHelperTest.php

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<?php
namespace TYPO3\CMS\Fluid\Tests\Unit\ViewHelpers\Form;

/*                                                                        *
 * This script belongs to the FLOW3 package "TYPO3.Fluid".                *
 *                                                                        *
 * It is free software; you can redistribute it and/or modify it under    *
 * the terms of the GNU Lesser General Public License, either version 3   *
 *  of the License, or (at your option) any later version.                *
 *                                                                        *
 * The TYPO3 project - inspiring people to share!                         *
 *                                                                        */

class ButtonViewHelperTest extends \TYPO3\CMS\Fluid\Tests\Unit\ViewHelpers\Form\FormFieldViewHelperBaseTestcase
{
    protected $viewHelper;

    protected function setUp()
    {
        parent::setUp();
        $this->viewHelper = $this->getAccessibleMock(\TYPO3\CMS\Fluid\ViewHelpers\Form\ButtonViewHelper::class, ['renderChildren']);
        $this->arguments['name'] = '';
        $this->injectDependenciesIntoViewHelper($this->viewHelper);
        $this->viewHelper->initializeArguments();
    }

    public function renderCorrectlySetsTagNameAndDefaultAttributes()
    {
        $mockTagBuilder = $this->getMock(\TYPO3\CMS\Fluid\Core\ViewHelper\TagBuilder::class, ['setTagName', 'addAttribute', 'setContent']);
        $mockTagBuilder->expects($this->once())->method('setTagName')->with('button');
        $mockTagBuilder->expects($this->at(1))->method('addAttribute')->with('type', 'submit');
        $mockTagBuilder->expects($this->at(2))->method('addAttribute')->with('name', '');
        $mockTagBuilder->expects($this->at(3))->method('addAttribute')->with('value', '');
        $mockTagBuilder->expects($this->at(4))->method('setContent')->with('Button Content');

        $this->viewHelper->expects($this->atLeastOnce())->method('renderChildren')->will($this->returnValue('Button Content'));

        $this->viewHelper->_set('tag', $mockTagBuilder);

        $this->viewHelper->initialize();
        $this->viewHelper->render();
    }
}