FlashMessagesViewHelperTest.php

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

/*                                                                        *
 * This script is backported from the TYPO3 Flow 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 FlashMessagesViewHelperTest extends \TYPO3\CMS\Fluid\Tests\Unit\ViewHelpers\ViewHelperBaseTestcase
{
    protected $viewHelper;

    protected $mockTagBuilder;

    protected $mockFlashMessagingQueue;

    protected function setUp()
    {
        $mockFlashMessagingQueue = $this->getMock(\TYPO3\CMS\Core\Messaging\FlashMessageQueue::class, ['getAllMessagesAndFlush'], ['foo']);
        $mockFlashMessagingQueue->expects($this->once())->method('getAllMessagesAndFlush')->will($this->returnValue([]));
        $this->mockFlashMessagingQueue = $mockFlashMessagingQueue;

        $mockControllerContext = $this->getMock(\TYPO3\CMS\Extbase\Mvc\Controller\ControllerContext::class, [], [], '', false);
        $mockControllerContext->expects($this->any())->method('getFlashMessageQueue')->will($this->returnValue($mockFlashMessagingQueue));

        $this->mockTagBuilder = $this->getMock(\TYPO3\CMS\Fluid\Core\ViewHelper\TagBuilder::class);
        $this->viewHelper = $this->getAccessibleMock(\TYPO3\CMS\Fluid\ViewHelpers\FlashMessagesViewHelper::class, ['dummy']);
        $this->viewHelper->_set('controllerContext', $mockControllerContext);
        $this->viewHelper->_set('tag', $this->mockTagBuilder);
        $this->viewHelper->initialize();
    }

    public function renderReturnsEmptyStringIfNoFlashMessagesAreInQueue()
    {
        $this->assertEmpty($this->viewHelper->render());
    }

    public function fetchMessagesFromSpecificQueue()
    {
        $queueIdentifier = 'myQueue';

        $mockControllerContext = $this->getMock(\TYPO3\CMS\Extbase\Mvc\Controller\ControllerContext::class, [], [], '', false);
        $mockControllerContext->expects($this->once())->method('getFlashMessageQueue')->with($queueIdentifier)->will($this->returnValue($this->mockFlashMessagingQueue));

        $this->viewHelper->_set('controllerContext', $mockControllerContext);
        $this->viewHelper->setArguments(['queueIdentifier' => $queueIdentifier]);

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