SettingsFormTest.php

<?php

namespace Drupal\Tests\advagg_cdn\Kernel\Form;

use Drupal\Core\Form\FormInterface;
use Drupal\KernelTests\KernelTestBase;
use Drupal\advagg_cdn\Form\SettingsForm;

/**
 * Tests the CDN settings form.
 *
 * @group advagg
 */
class SettingsFormTest extends KernelTestBase {
    
    /**
     * The CDN settings form object under test.
     *
     * @var \Drupal\advagg_cdn\Form\SettingsForm
     */
    protected $settingsForm;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'system',
        'advagg',
        'advagg_cdn',
    ];
    
    /**
     * {@inheritdoc}
     *
     * @covers ::__construct
     */
    protected function setUp() {
        parent::setUp();
        $this->installConfig(static::$modules);
        $this->settingsForm = SettingsForm::create($this->container);
    }
    
    /**
     * Tests for \Drupal\advagg_cdn\Form\SettingsForm.
     */
    public function testSettingsForm() {
        $this->assertInstanceOf(FormInterface::class, $this->settingsForm);
        $id = $this->settingsForm
            ->getFormId();
        $this->assertEquals('advagg_cdn_settings', $id);
        $method = new \ReflectionMethod(SettingsForm::class, 'getEditableConfigNames');
        $method->setAccessible(TRUE);
        $name = $method->invoke($this->settingsForm);
        $this->assertEquals([
            'advagg_cdn.settings',
        ], $name);
    }

}