Added drupal_form function.

src/TwigExtension.php

@@ -6,6 +6,7 @@ use Drupal\Core\Block\TitleBlockPluginInterface;
 use Drupal\Core\Config\ConfigFactoryInterface;
 use Drupal\Core\Controller\TitleResolverInterface;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Form\FormBuilderInterface;
 use Drupal\Core\Menu\MenuLinkTreeInterface;
 use Drupal\Core\Routing\RouteMatchInterface;
 use Drupal\Core\Site\Settings;
@@ -68,6 +69,13 @@ class TwigExtension extends \Twig_Extension {
    */
   protected $titleResolver;
 
+  /**
+   * The form builder.
+   *
+   * @var \Drupal\Core\Form\FormBuilderInterface
+   */
+  protected $formBuilder;
+
   /**
    * TwigExtension constructor.
    *
@@ -85,8 +93,10 @@ class TwigExtension extends \Twig_Extension {
    *   The request stack.
    * @param \Drupal\Core\Controller\TitleResolverInterface $title_resolver
    *   The title resolver.
+   * @param \Drupal\Core\Form\FormBuilderInterface $form_builder
+   *   The form builder.
    */
-  public function __construct(EntityTypeManagerInterface $entity_type_manager, Token $token, ConfigFactoryInterface $config_factory, RouteMatchInterface $route_match, MenuLinkTreeInterface $menu_tree, RequestStack $request_stack, TitleResolverInterface $title_resolver) {
+  public function __construct(EntityTypeManagerInterface $entity_type_manager, Token $token, ConfigFactoryInterface $config_factory, RouteMatchInterface $route_match, MenuLinkTreeInterface $menu_tree, RequestStack $request_stack, TitleResolverInterface $title_resolver, FormBuilderInterface $form_builder) {
     $this->entityTypeManager = $entity_type_manager;
     $this->token = $token;
     $this->configFactory = $config_factory;
@@ -94,6 +104,7 @@ class TwigExtension extends \Twig_Extension {
     $this->menuTree = $menu_tree;
     $this->requestStack = $request_stack;
     $this->titleResolver = $title_resolver;
+    $this->formBuilder = $form_builder;
   }
 
   /**
@@ -294,7 +305,7 @@ class TwigExtension extends \Twig_Extension {
    *   A render array to represent the form.
    */
   public function drupalForm($form_id) {
-    return \Drupal::formBuilder()->getForm($form_id);
+    return $this->formBuilder->getForm($form_id);
   }
 
   /**

tests/src/Functional/TwigTweakTest.php

@@ -5,7 +5,7 @@ namespace Drupal\Tests\twig_tweak\Functional;
 use Drupal\Tests\BrowserTestBase;
 
 /**
- * Tests twig_tweak twig extension.
+ * A test for Twig extension.
  *
  * @group twig_tweak
  */
@@ -35,7 +35,7 @@ class TwigTweakTest extends BrowserTestBase {
   }
 
   /**
-   * Tests output produced by the twig extension.
+   * Tests output produced by the Twig extension.
    */
   public function testOutput() {
     $this->drupalGet('<front>');
@@ -62,6 +62,18 @@ class TwigTweakTest extends BrowserTestBase {
     $xpath .= '/div[@class = "view-content"]//ul[count(./li) = 1]/li';
     $this->assertByXpath($xpath . '//a[contains(@href, "/node/1") and text() = "Alpha"]');
 
+    // Test block.
+    $xpath = '//div[@class = "tt-block"]';
+    $xpath .= '/div[@id="block-powered-by-drupal"]/span[contains(., "Powered by Drupal")]';
+    $this->assertByXpath($xpath);
+
+    // Test region.
+    $xpath = '//div[@class = "tt-region"]';
+    $xpath .= '/div[contains(@class, "block-page-title-block") and h1[@class="page-title" and text() = "Log in"]]';
+    $xpath .= '/following-sibling::div[@class="messages messages--warning" and contains(., "Hi!")]';
+    $xpath .= '/following-sibling::div[contains(@class, "block-system-powered-by-block")]/span[. = "Powered by Drupal"]';
+    $this->assertByXpath($xpath);
+
     // Test entity default view mode.
     $xpath = '//div[@class = "tt-entity-default"]';
     $xpath .= '/article[contains(@class, "node") and not(contains(@class, "node--view-mode-teaser"))]';
@@ -99,16 +111,8 @@ class TwigTweakTest extends BrowserTestBase {
     $xpath = '//div[@class = "tt-menu-depth"]/ul[@class = "menu"]/li[not(ul)]/a[text() = "Link 1"]';
     $this->assertByXpath($xpath);
 
-    // Test region.
-    $xpath = '//div[@class = "tt-region"]';
-    $xpath .= '/div[contains(@class, "block-page-title-block") and h1[@class="page-title" and text() = "Beta"]]';
-    $xpath .= '/following-sibling::div[@class="messages messages--warning" and contains(., "Hi!")]';
-    $xpath .= '/following-sibling::div[contains(@class, "block-system-powered-by-block")]/span[. = "Powered by Drupal"]';
-    $this->assertByXpath($xpath);
-
-    // Test block.
-    $xpath = '//div[@class = "tt-block"]';
-    $xpath .= '/div[@id="block-powered-by-drupal"]/span[contains(., "Powered by Drupal")]';
+    // Test form.
+    $xpath = '//div[@class = "tt-form"]/form[@class="system-cron-settings"]/input[@type = "submit" and @value = "Run cron"]';
     $this->assertByXpath($xpath);
 
     // Test token.

tests/twig_tweak_test/templates/twig-tweak-test.html.twig

@@ -28,6 +28,7 @@
   <div class="tt-menu-default">{{ drupal_menu('twig-tweak-test') }}</div>
   <div class="tt-menu-level">{{ drupal_menu('twig-tweak-test', 2) }}</div>
   <div class="tt-menu-depth">{{ drupal_menu('twig-tweak-test', 1, 1) }}</div>
+  <div class="tt-form">{{ drupal_form('Drupal\\system\\Form\\CronForm') }}</div>
   <div class="tt-token">{{ drupal_token('site:name') }}</div>
   <div class="tt-token-data">{{ drupal_token('node:title', {'node': node}) }}</div>
   <div class="tt-config">{{ drupal_config('user.settings', 'anonymous') }}</div>

tests/twig_tweak_test/twig_tweak_test.module

@@ -23,5 +23,5 @@ function twig_tweak_test_theme() {
  * Prepares variables for twig-tweak-test template.
  */
 function template_preprocess_twig_tweak_test(&$vars) {
-  $vars['node'] = $node = Drupal::routeMatch()->getParameter('node');
+  $vars['node'] = Drupal::routeMatch()->getParameter('node');
 }

twig_tweak.services.yml

@@ -9,5 +9,6 @@ services:
       - '@menu.link_tree'
       - '@request_stack'
       - '@title_resolver'
+      - '@form_builder'
     tags:
       - { name: twig.extension }