PHP Decode

<?php
/**
 * This file is part of PHPWord - A pure PHP library for reading and writing
 * word processing documents.
 *
 * PHPWord is free software distributed under the terms of the GNU Lesser
 * General Public License version 3 as published by the Free Software Foundation.
 *
 * For the full copyright and license information, please read the LICENSE
 * file that was distributed with this source code. For the full list of
 * contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
 *
 * @see         https://github.com/PHPOffice/PHPWord
 *
 * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
 */

namespace PhpOffice\PhpWordTests\Writer\ODText\Element;

use PhpOffice\Math\Element;
use PhpOffice\Math\Math;
use PhpOffice\PhpWord\PhpWord;
use PhpOffice\PhpWordTests\TestHelperDOCX;
use PHPUnit\Framework\TestCase;

/**
 * Test class for PhpOffice\PhpWord\Writer\ODText\Element subnamespace.
 */
class FormulaTest extends TestCase
{
    /**
     * Executed before each method of the class.
     */
    protected function tearDown(): void
    {
        TestHelperDOCX::clear();
    }

    public function testBasicFormula(): void
    {
        $math = new Math();
        $math
            ->add(
                new Element\Fraction(
                    new Element\Numeric(2),
                    new Element\Identifier('')
                )
            )
            ->add(
                new Element\Operator('+')
            )
            ->add(
                new Element\Identifier('a')
            )
            ->add(
                new Element\Operator('')
            )
            ->add(
                new Element\Numeric(2)
            );

        $phpWord = new PhpWord();

        $section = $phpWord->addSection();
        $section->addFormula($math);

        $doc = TestHelperDOCX::getDocument($phpWord, 'ODText');

        self::assertTrue($doc->elementExists('/office:document-content/office:body/office:text/text:section/text:p/draw:frame/draw:object'));
    }
}
 ?>