--- /dev/null
+<?php
+
+namespace Drupal\Tests\system\Functional\System;
+
+use Drupal\Component\Render\FormattableMarkup;
+use Drupal\Tests\BrowserTestBase;
+use Drupal\Tests\system\Functional\Cache\AssertPageCacheContextsAndTagsTrait;
+use Drupal\user\RoleInterface;
+
+/**
+ * Tests page access denied functionality, including custom 403 pages.
+ *
+ * @group system
+ */
+class AccessDeniedTest extends BrowserTestBase {
+
+ use AssertPageCacheContextsAndTagsTrait;
+
+ /**
+ * Modules to enable.
+ *
+ * @var array
+ */
+ public static $modules = ['block', 'node', 'system_test'];
+
+ protected $adminUser;
+
+ protected function setUp() {
+ parent::setUp();
+
+ $this->drupalPlaceBlock('page_title_block');
+
+ // Create an administrative user.
+ $this->adminUser = $this->drupalCreateUser(['access administration pages', 'administer site configuration', 'link to any page', 'administer blocks']);
+ $this->adminUser->roles[] = 'administrator';
+ $this->adminUser->save();
+
+ user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, ['access user profiles']);
+ user_role_grant_permissions(RoleInterface::AUTHENTICATED_ID, ['access user profiles']);
+ }
+
+ public function testAccessDenied() {
+ $this->drupalGet('admin');
+ $this->assertText(t('Access denied'), 'Found the default 403 page');
+ $this->assertResponse(403);
+
+ // Ensure that users without permission are denied access and have the
+ // correct path information in drupalSettings.
+ $this->drupalLogin($this->createUser([]));
+ $this->drupalGet('admin', ['query' => ['foo' => 'bar']]);
+
+ $settings = $this->getDrupalSettings();
+ $this->assertEqual($settings['path']['currentPath'], 'admin');
+ $this->assertEqual($settings['path']['currentPathIsAdmin'], TRUE);
+ $this->assertEqual($settings['path']['currentQuery'], ['foo' => 'bar']);
+
+ $this->drupalLogin($this->adminUser);
+
+ // Set a custom 404 page without a starting slash.
+ $edit = [
+ 'site_403' => 'user/' . $this->adminUser->id(),
+ ];
+ $this->drupalPostForm('admin/config/system/site-information', $edit, t('Save configuration'));
+ $this->assertRaw(new FormattableMarkup("The path '%path' has to start with a slash.", ['%path' => $edit['site_403']]));
+
+ // Use a custom 403 page.
+ $edit = [
+ 'site_403' => '/user/' . $this->adminUser->id(),
+ ];
+ $this->drupalPostForm('admin/config/system/site-information', $edit, t('Save configuration'));
+
+ // Enable the user login block.
+ $block = $this->drupalPlaceBlock('user_login_block', ['id' => 'login']);
+
+ // Log out and check that the user login block is shown on custom 403 pages.
+ $this->drupalLogout();
+ $this->drupalGet('admin');
+ $this->assertText($this->adminUser->getUsername(), 'Found the custom 403 page');
+ $this->assertText(t('Username'), 'Blocks are shown on the custom 403 page');
+
+ // Log back in and remove the custom 403 page.
+ $this->drupalLogin($this->adminUser);
+ $edit = [
+ 'site_403' => '',
+ ];
+ $this->drupalPostForm('admin/config/system/site-information', $edit, t('Save configuration'));
+
+ // Logout and check that the user login block is shown on default 403 pages.
+ $this->drupalLogout();
+ $this->drupalGet('admin');
+ $this->assertText(t('Access denied'), 'Found the default 403 page');
+ $this->assertResponse(403);
+ $this->assertText(t('Username'), 'Blocks are shown on the default 403 page');
+
+ // Log back in, set the custom 403 page to /user/login and remove the block
+ $this->drupalLogin($this->adminUser);
+ $this->config('system.site')->set('page.403', '/user/login')->save();
+ $block->disable()->save();
+
+ // Check that we can log in from the 403 page.
+ $this->drupalLogout();
+ $edit = [
+ 'name' => $this->adminUser->getUsername(),
+ 'pass' => $this->adminUser->pass_raw,
+ ];
+ $this->drupalPostForm('admin/config/system/site-information', $edit, t('Log in'));
+
+ // Check that we're still on the same page.
+ $this->assertText(t('Basic site settings'));
+ }
+
+ /**
+ * Tests that an inaccessible custom 403 page falls back to the default.
+ */
+ public function testAccessDeniedCustomPageWithAccessDenied() {
+ // Sets up a 403 page not accessible by the anonymous user.
+ $this->config('system.site')->set('page.403', '/system-test/custom-4xx')->save();
+
+ $this->drupalGet('/system-test/always-denied');
+ $this->assertNoText('Admin-only 4xx response');
+ $this->assertText('You are not authorized to access this page.');
+ $this->assertResponse(403);
+ // Verify the access cacheability metadata for custom 403 is bubbled.
+ $this->assertCacheContext('user.roles');
+
+ $this->drupalLogin($this->adminUser);
+ $this->drupalGet('/system-test/always-denied');
+ $this->assertText('Admin-only 4xx response');
+ $this->assertResponse(403);
+ // Verify the access cacheability metadata for custom 403 is bubbled.
+ $this->assertCacheContext('user.roles');
+ }
+
+}