DataProviderTest.php

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<?php
namespace TYPO3\CMS\Backend\Tests\Unit\Tree\Pagetree;

/*
 * This file is part of the TYPO3 CMS project.
 *
 * It is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License, either version 2
 * of the License, or any later version.
 *
 * For the full copyright and license information, please read the
 * LICENSE.txt file that was distributed with this source code.
 *
 * The TYPO3 project - inspiring people to share!
 */

class DataProviderTest extends \TYPO3\TestingFramework\Core\Unit\UnitTestCase
{
    protected $subject = null;

    protected function setUp()
    {
        $GLOBALS['TYPO3_CONF_VARS']['BE']['pageTree']['preloadLimit'] = 0;
        $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/tree/pagetree/class.t3lib_tree_pagetree_dataprovider.php']['postProcessCollections'] = [];
        $backendUserMock = $this->createMock(\TYPO3\CMS\Core\Authentication\BackendUserAuthentication::class);
        $GLOBALS['BE_USER'] = $backendUserMock;

        $this->subject = new \TYPO3\CMS\Backend\Tree\Pagetree\DataProvider();
    }

    public function getRootNodeReturnsNodeWithRootId()
    {
        $this->assertSame('root', $this->subject->getRoot()->getId());
    }

    public function getRootNodeReturnsExpandedNode()
    {
        $this->assertTrue($this->subject->getRoot()->isExpanded());
    }
}