ViewsFormTest.php

<?php

namespace Drupal\Tests\views\Functional\Plugin;

use Drupal\Tests\views\Functional\ViewTestBase;

/**
 * Tests Views forms functionality.
 *
 * @group views
 */
class ViewsFormTest extends ViewTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'action_bulk_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests the Views form wrapper.
     */
    public function testFormWrapper() {
        $this->drupalGet('test_bulk_form');
        // Ensure we have the form tag on the page.
        $xpath = $this->cssSelect('.views-form form');
        $this->assertCount(1, $xpath, 'There is one views form on the page.');
        // Ensure we don't have nested form elements.
        $result = (bool) preg_match('#<form[^>]*?>(?!/form).*<form#s', $this->getSession()
            ->getPage()
            ->getContent());
        $this->assertFalse($result, 'The views form element is not nested.');
        // Test the form isn't shown when the display doesn't use fields.
        $this->drupalGet('display-without-fields');
        // Ensure there's no form.
        $xpath = $this->cssSelect('.views-form form');
        $this->assertCount(0, $xpath);
    }

}