AjaxFormCacheTest.php

<?php

namespace Drupal\FunctionalJavascriptTests\Ajax;

use Drupal\Core\Url;
use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

/**
 * Tests the usage of form caching for AJAX forms.
 *
 * @group Ajax
 */
class AjaxFormCacheTest extends WebDriverTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'ajax_test',
        'ajax_forms_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests the usage of form cache for AJAX forms.
     */
    public function testFormCacheUsage() {
        
        /** @var \Drupal\Core\KeyValueStore\KeyValueStoreExpirableInterface $key_value_expirable */
        $key_value_expirable = \Drupal::service('keyvalue.expirable')->get('form');
        $this->drupalLogin($this->rootUser);
        // Ensure that the cache is empty.
        $this->assertCount(0, $key_value_expirable->getAll());
        // Visit an AJAX form that is not cached, 3 times.
        $uncached_form_url = Url::fromRoute('ajax_forms_test.commands_form');
        $this->drupalGet($uncached_form_url);
        $this->drupalGet($uncached_form_url);
        $this->drupalGet($uncached_form_url);
        // The number of cache entries should not have changed.
        $this->assertCount(0, $key_value_expirable->getAll());
    }
    
    /**
     * Tests AJAX forms in blocks.
     */
    public function testBlockForms() {
        $this->container
            ->get('module_installer')
            ->install([
            'block',
            'search',
        ]);
        $this->rebuildContainer();
        $this->drupalLogin($this->rootUser);
        $this->drupalPlaceBlock('search_form_block', [
            'weight' => -5,
        ]);
        $this->drupalPlaceBlock('ajax_forms_test_block');
        $this->drupalGet('');
        $session = $this->getSession();
        // Select first option and trigger ajax update.
        $session->getPage()
            ->selectFieldOption('edit-test1', 'option1');
        // DOM update: The InsertCommand in the AJAX response changes the text
        // in the option element to 'Option1!!!'.
        $opt1_selector = $this->assertSession()
            ->waitForElement('css', "select[data-drupal-selector='edit-test1'] option:contains('Option 1!!!')");
        $this->assertNotEmpty($opt1_selector);
        $this->assertTrue($opt1_selector->isSelected());
        // Confirm option 3 exists.
        $page = $session->getPage();
        $opt3_selector = $page->find('xpath', '//select[@data-drupal-selector="edit-test1"]//option[@value="option3"]');
        $this->assertNotEmpty($opt3_selector);
        // Confirm success message appears after a submit.
        $page->findButton('edit-submit')
            ->click();
        $this->assertSession()
            ->waitForButton('edit-submit');
        $updated_page = $session->getPage();
        $updated_page->hasContent('Submission successful.');
    }
    
    /**
     * Tests AJAX forms on pages with a query string.
     */
    public function testQueryString() {
        $this->container
            ->get('module_installer')
            ->install([
            'block',
        ]);
        $this->drupalLogin($this->rootUser);
        $this->drupalPlaceBlock('ajax_forms_test_block');
        $url = Url::fromRoute('entity.user.canonical', [
            'user' => $this->rootUser
                ->id(),
        ], [
            'query' => [
                'foo' => 'bar',
            ],
        ]);
        $this->drupalGet($url);
        $session = $this->getSession();
        // Select first option and trigger ajax update.
        $session->getPage()
            ->selectFieldOption('edit-test1', 'option1');
        // DOM update: The InsertCommand in the AJAX response changes the text
        // in the option element to 'Option1!!!'.
        $opt1_selector = $this->assertSession()
            ->waitForElement('css', "option:contains('Option 1!!!')");
        $this->assertNotEmpty($opt1_selector);
        $url->setOption('query', [
            'foo' => 'bar',
        ]);
        $this->assertSession()
            ->addressEquals($url);
    }

}