FieldTypeCategoryDiscoveryTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\field\Kernel;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests discovery of field type categories provided by modules.
 *
 * @group field
 */
class FieldTypeCategoryDiscoveryTest extends KernelTestBase {
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'field_plugins_test',
    ];
    
    /**
     * Tests custom field type categories created by modules.
     */
    public function testFieldTypeCategories() : void {
        $category = \Drupal::service('plugin.manager.field.field_type_category')->createInstance('test_category');
        $expected = [
            'Test category',
            'This is a test field type category.',
            -10,
            [
                'field_plugins_test/test_library',
            ],
        ];
        $this->assertSame($expected, [
            (string) $category->getLabel(),
            (string) $category->getDescription(),
            $category->getWeight(),
            $category->getLibraries(),
        ]);
    }

}