CountViewHelperTest.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 CountViewHelperTest extends \TYPO3\CMS\Fluid\Tests\Unit\ViewHelpers\ViewHelperBaseTestcase
{
    protected $viewHelper;

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

    public function renderReturnsNumberOfElementsInAnArray()
    {
        $expectedResult = 3;
        $actualResult = $this->viewHelper->render(['foo', 'bar', 'Baz']);
        $this->assertSame($expectedResult, $actualResult);
    }

    public function renderReturnsNumberOfElementsInAnArrayObject()
    {
        $expectedResult = 2;
        $actualResult = $this->viewHelper->render(new \ArrayObject(['foo', 'bar']));
        $this->assertSame($expectedResult, $actualResult);
    }

    public function renderReturnsZeroIfGivenArrayIsEmpty()
    {
        $expectedResult = 0;
        $actualResult = $this->viewHelper->render([]);
        $this->assertSame($expectedResult, $actualResult);
    }

    public function renderUsesChildrenAsSubjectIfGivenSubjectIsNull()
    {
        $this->viewHelper->expects($this->once())->method('renderChildren')->will($this->returnValue(['foo', 'bar', 'baz']));
        $expectedResult = 3;
        $actualResult = $this->viewHelper->render(null);
        $this->assertSame($expectedResult, $actualResult);
    }

    public function renderReturnsZeroIfGivenSubjectIsNullAndRenderChildrenReturnsNull()
    {
        $this->viewHelper->expects($this->once())->method('renderChildren')->will($this->returnValue(null));
        $expectedResult = 0;
        $actualResult = $this->viewHelper->render(null);
        $this->assertSame($expectedResult, $actualResult);
    }

    public function renderThrowsExceptionIfGivenSubjectIsNotCountable()
    {
        $object = new \stdClass();
        $this->viewHelper->render($object);
    }
}