ImageImportTest.php

<?php

namespace Drupal\Tests\image\Kernel;

use Drupal\image\Entity\ImageStyle;
use Drupal\KernelTests\KernelTestBase;

/**
 * Tests config import for Image styles.
 *
 * @group image
 */
class ImageImportTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
        'image',
        'image_module_test',
    ];
    
    /**
     * Tests importing image styles.
     */
    public function testImport() {
        $style = ImageStyle::create([
            'name' => 'test',
        ]);
        $style->addImageEffect([
            'id' => 'image_module_test_null',
        ]);
        $style->addImageEffect([
            'id' => 'image_module_test_null',
        ]);
        $style->save();
        $this->assertCount(2, $style->getEffects());
        $uuid = \Drupal::service('uuid')->generate();
        $style->set('effects', [
            $uuid => [
                'id' => 'image_module_test_null',
            ],
        ]);
        $style->save();
        $style = ImageStyle::load('test');
        $this->assertCount(1, $style->getEffects());
    }

}