ColorConfigSchemaTest.php

<?php

namespace Drupal\Tests\color\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * Ensures the color config schema is correct.
 *
 * @group color
 */
class ColorConfigSchemaTest extends BrowserTestBase {
  
  /**
   * Modules to install.
   *
   * @var array
   */
  public static $modules = [
    'color',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * A user with administrative permissions.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() {
    parent::setUp();
    \Drupal::service('theme_installer')->install([
      'bartik',
    ]);
    // Create user.
    $this->adminUser = $this->drupalCreateUser([
      'administer themes',
    ]);
    $this->drupalLogin($this->adminUser);
  }
  
  /**
   * Tests whether the color config schema is valid.
   */
  public function testValidColorConfigSchema() {
    $settings_path = 'admin/appearance/settings/bartik';
    $edit['scheme'] = '';
    $edit['palette[bg]'] = '#123456';
    $this->drupalPostForm($settings_path, $edit, t('Save configuration'));
  }

}