RedirectTest.php

<?php

namespace Drupal\Tests\system\Functional\Form;

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

/**
 * Tests form redirection functionality.
 *
 * @group Form
 */
class RedirectTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'form_test',
        'block',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Tests form redirection.
     */
    public function testRedirect() {
        $path = 'form-test/redirect';
        $options = [
            'query' => [
                'foo' => 'bar',
            ],
        ];
        $options['absolute'] = TRUE;
        // Test basic redirection.
        $edit = [
            'redirection' => TRUE,
            'destination' => $this->randomMachineName(),
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Submit');
        $this->assertSession()
            ->addressEquals($edit['destination']);
        // Test without redirection.
        $edit = [
            'redirection' => FALSE,
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Submit');
        $this->assertSession()
            ->addressEquals($path);
        // Test redirection with query parameters.
        $edit = [
            'redirection' => TRUE,
            'destination' => $this->randomMachineName(),
        ];
        $this->drupalGet($path, $options);
        $this->submitForm($edit, 'Submit');
        $this->assertSession()
            ->addressEquals($edit['destination']);
        // Test without redirection but with query parameters.
        $edit = [
            'redirection' => FALSE,
        ];
        $this->drupalGet($path, $options);
        $this->submitForm($edit, 'Submit');
        // When redirect is set to FALSE, there should be no redirection, and the
        // query parameters should be passed along.
        $this->assertSession()
            ->addressEquals($path . '?foo=bar');
        // Test redirection back to the original path.
        $edit = [
            'redirection' => TRUE,
            'destination' => '',
        ];
        $this->drupalGet($path);
        $this->submitForm($edit, 'Submit');
        $this->assertSession()
            ->addressEquals($path);
        // Test redirection back to the original path with query parameters.
        $edit = [
            'redirection' => TRUE,
            'destination' => '',
        ];
        $this->drupalGet($path, $options);
        $this->submitForm($edit, 'Submit');
        // When using an empty redirection string, there should be no redirection,
        // and the query parameters should be passed along.
        $this->assertSession()
            ->addressEquals($path . '?foo=bar');
    }
    
    /**
     * Tests form redirection from 404/403 pages with the Block form.
     */
    public function testRedirectFromErrorPages() {
        // Make sure the block containing the redirect form is placed.
        $this->drupalPlaceBlock('redirect_form_block');
        // Create a user that does not have permission to administer blocks.
        $user = $this->drupalCreateUser([
            'administer themes',
        ]);
        $this->drupalLogin($user);
        // Visit page 'foo' (404 page) and submit the form. Verify it ends up
        // at the right URL.
        $expected = Url::fromRoute('form_test.route1', [], [
            'query' => [
                'test1' => 'test2',
            ],
            'absolute' => TRUE,
        ])->toString();
        $this->drupalGet('foo');
        $this->assertSession()
            ->statusCodeEquals(404);
        $this->submitForm([], 'Submit');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->addressEquals($expected);
        // Visit the block admin page (403 page) and submit the form. Verify it
        // ends up at the right URL.
        $this->drupalGet('admin/structure/block');
        $this->assertSession()
            ->statusCodeEquals(403);
        $this->submitForm([], 'Submit');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertSession()
            ->addressEquals($expected);
    }

}