ConfirmFormTest.php

<?php

namespace Drupal\Tests\system\Functional\Form;

use Drupal\Core\Url;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests confirmation forms.
 *
 * @group Form
 */
class ConfirmFormTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'form_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    public function testConfirmForm() {
        // Test the building of the form.
        $this->drupalGet('form-test/confirm-form');
        $site_name = $this->config('system.site')
            ->get('name');
        $this->assertSession()
            ->titleEquals("ConfirmFormTestForm::getQuestion(). | {$site_name}");
        $this->assertSession()
            ->pageTextContains('ConfirmFormTestForm::getDescription().');
        $this->assertSession()
            ->buttonExists('ConfirmFormTestForm::getConfirmText().');
        // Test cancelling the form.
        $this->clickLink('ConfirmFormTestForm::getCancelText().');
        $this->assertSession()
            ->addressEquals('form-test/autocomplete');
        // Test submitting the form.
        $this->drupalGet('form-test/confirm-form');
        $this->submitForm([], 'ConfirmFormTestForm::getConfirmText().');
        $this->assertSession()
            ->pageTextContains('The ConfirmFormTestForm::submitForm() method was used for this form.');
        $this->assertSession()
            ->addressEquals('');
        // Test submitting the form with a destination.
        $this->drupalGet('form-test/confirm-form', [
            'query' => [
                'destination' => 'admin/config',
            ],
        ]);
        $this->submitForm([], 'ConfirmFormTestForm::getConfirmText().');
        $this->assertSession()
            ->addressEquals('admin/config');
        // Test cancelling the form with a complex destination.
        $this->drupalGet('form-test/confirm-form-array-path');
        $this->clickLink('ConfirmFormArrayPathTestForm::getCancelText().');
        // Verify that the form's complex cancel link was followed.
        $this->assertSession()
            ->addressEquals('form-test/confirm-form?destination=admin/config');
    }
    
    /**
     * Tests that the confirm form does not use external destinations.
     */
    public function testConfirmFormWithExternalDestination() {
        $this->drupalGet('form-test/confirm-form');
        $this->assertSession()
            ->linkByHrefExists(Url::fromRoute('form_test.route8')->toString());
        $this->drupalGet('form-test/confirm-form', [
            'query' => [
                'destination' => 'node',
            ],
        ]);
        $this->assertSession()
            ->linkByHrefExists(Url::fromUri('internal:/node')->toString());
        $this->drupalGet('form-test/confirm-form', [
            'query' => [
                'destination' => 'http://example.com',
            ],
        ]);
        $this->assertSession()
            ->linkByHrefExists(Url::fromRoute('form_test.route8')->toString());
        $this->drupalGet('form-test/confirm-form', [
            'query' => [
                'destination' => '<front>',
            ],
        ]);
        $this->assertSession()
            ->linkByHrefExists(Url::fromRoute('<front>')->toString());
        // Other invalid destinations, should fall back to the form default.
        $this->drupalGet('form-test/confirm-form', [
            'query' => [
                'destination' => '/http://example.com',
            ],
        ]);
        $this->assertSession()
            ->linkByHrefExists(Url::fromRoute('form_test.route8')->toString());
    }

}