PhpSpreadsheet/tests/PhpSpreadsheetTests/SettingsTest.php

<?php

namespace PhpOffice\PhpSpreadsheetTests;

use PhpOffice\PhpSpreadsheet\Settings;
use PHPUnit\Framework\TestCase;

class SettingsTest extends TestCase
{
    /**
     * @var string
     */
    protected $prevValue;

    protected function setUp(): void
    {
        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
        if (\PHP_VERSION_ID < 80000) {
            $this->prevValue = libxml_disable_entity_loader();
            libxml_disable_entity_loader(false); // Enable entity loader
        }
    }

    protected function tearDown(): void
    {
        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
        if (\PHP_VERSION_ID < 80000) {
            libxml_disable_entity_loader($this->prevValue);
        }
    }

    public function testGetXMLSettings(): void
    {
        $result = Settings::getLibXmlLoaderOptions();
        self::assertTrue((bool) ((LIBXML_DTDLOAD | LIBXML_DTDATTR) & $result));
        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
        if (\PHP_VERSION_ID < 80000) {
            self::assertFalse(libxml_disable_entity_loader());
        }
    }

    public function testSetXMLSettings(): void
    {
        Settings::setLibXmlLoaderOptions(LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_DTDVALID);
        $result = Settings::getLibXmlLoaderOptions();
        self::assertTrue((bool) ((LIBXML_DTDLOAD | LIBXML_DTDATTR | LIBXML_DTDVALID) & $result));
        // php 8.+ deprecated libxml_disable_entity_loader() - It's on by default
        if (\PHP_VERSION_ID < 80000) {
            self::assertFalse(libxml_disable_entity_loader());
        }
    }
}