class DevelopmentSettingsFormTest

class DevelopmentSettingsFormTest extends WebDriverTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
    'dynamic_page_cache',
    'page_cache',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $admin_user = $this->drupalCreateUser([
      'administer site configuration',
    ]);
    $this->drupalLogin($admin_user);
  }
  
  /**
   * Tests turning on Twig development mode.
   *
   * @dataProvider twigDevelopmentData
   */
  public function testTwigDevelopmentMode(bool $twig_development_mode, ?bool $twig_debug, ?bool $twig_cache_disable) : void {
    $twig_debug = $twig_debug ?? $twig_development_mode;
    $twig_cache_disable = $twig_cache_disable ?? $twig_development_mode;
    $twig_config = \Drupal::getContainer()->getParameter('twig.config');
    self::assertFalse($twig_config['debug']);
    self::assertNull($twig_config['auto_reload']);
    self::assertTrue($twig_config['cache']);
    $this->drupalGet(Url::fromRoute('system.development_settings'));
    if ($twig_development_mode) {
      $this->getSession()
        ->getPage()
        ->checkField('Twig development mode');
      $this->assertSession()
        ->checkboxChecked('Twig debug mode');
      $this->assertSession()
        ->checkboxChecked('Disable Twig cache');
    }
    if (!$twig_debug) {
      $this->getSession()
        ->getPage()
        ->uncheckField('Twig debug mode');
    }
    if (!$twig_cache_disable) {
      $this->getSession()
        ->getPage()
        ->uncheckField('Disable Twig cache');
    }
    $this->getSession()
      ->getPage()
      ->pressButton('Save settings');
    $this->drupalGet(Url::fromRoute('system.status'));
    if (!$twig_development_mode) {
      $this->assertSession()
        ->pageTextNotContains('Twig development mode');
    }
    else {
      $this->assertSession()
        ->pageTextContains('Twig development mode');
      $this->assertSession()
        ->linkExists('development settings page');
    }
    $refreshed_container = $this->initKernel(Request::create('/'));
    $twig_config = $refreshed_container->getParameter('twig.config');
    self::assertEquals($twig_debug, $twig_config['debug']);
    self::assertNull($twig_config['auto_reload']);
    self::assertEquals(!$twig_cache_disable, $twig_config['cache']);
  }
  
  /**
   * Test data for Twig development mode.
   *
   * @return array[]
   */
  public static function twigDevelopmentData() : array {
    return [
      'Twig development mode checked only' => [
        TRUE,
        NULL,
        NULL,
      ],
      'Twig debug mode only, keep Twig cache' => [
        TRUE,
        TRUE,
        FALSE,
      ],
      'Twig debug mode off, disable Twig cache' => [
        TRUE,
        FALSE,
        TRUE,
      ],
      'No changes' => [
        FALSE,
        NULL,
        NULL,
      ],
    ];
  }
  
  /**
   * Tests disabling cache bins which cache markup.
   */
  public function testDisabledRenderedOutputCacheBins() : void {
    self::assertFalse(\Drupal::getContainer()->has('cache.backend.null'));
    $this->drupalGet(Url::fromRoute('system.development_settings'));
    $this->getSession()
      ->getPage()
      ->checkField('Do not cache markup');
    $this->getSession()
      ->getPage()
      ->pressButton('Save settings');
    $this->drupalGet(Url::fromRoute('system.status'));
    $this->assertSession()
      ->pageTextContains('Markup caching disabled');
    $this->assertSession()
      ->linkExists('development settings page');
    $refreshed_container = $this->initKernel(Request::create('/'));
    self::assertTrue($refreshed_container->has('cache.backend.null'));
    $cache_bins = [
      'page',
      'dynamic_page_cache',
      'render',
    ];
    foreach ($cache_bins as $cache_bin) {
      self::assertInstanceOf(NullBackend::class, $refreshed_container->get("cache.{$cache_bin}"));
    }
  }

}