class PageNotFoundTest

class PageNotFoundTest extends BrowserTestBase {
  use AssertPageCacheContextsAndTagsTrait;
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'system_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  protected $adminUser;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    // Create an administrative user.
    $this->adminUser = $this->drupalCreateUser([
      'administer site configuration',
      'link to any page',
    ]);
    $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 testPageNotFound() {
    $this->drupalLogin($this->adminUser);
    $this->drupalGet($this->randomMachineName(10));
    $this->assertSession()
      ->pageTextContains('Page not found');
    // Set a custom 404 page without a starting slash.
    $edit = [
      'site_404' => 'user/' . $this->adminUser
        ->id(),
    ];
    $this->drupalGet('admin/config/system/site-information');
    $this->submitForm($edit, 'Save configuration');
    $this->assertSession()
      ->pageTextContains("The path '{$edit['site_404']}' has to start with a slash.");
    // Use a custom 404 page.
    $edit = [
      'site_404' => '/user/' . $this->adminUser
        ->id(),
    ];
    $this->drupalGet('admin/config/system/site-information');
    $this->submitForm($edit, 'Save configuration');
    $this->drupalGet($this->randomMachineName(10));
    $this->assertSession()
      ->pageTextContains($this->adminUser
      ->getAccountName());
  }
  
  /**
   * Tests that an inaccessible custom 404 page falls back to the default.
   */
  public function testPageNotFoundCustomPageWithAccessDenied() {
    // Sets up a 404 page not accessible by the anonymous user.
    $this->config('system.site')
      ->set('page.404', '/system-test/custom-4xx')
      ->save();
    $this->drupalGet('/this-path-does-not-exist');
    $this->assertSession()
      ->pageTextNotContains('Admin-only 4xx response');
    $this->assertSession()
      ->pageTextContains('The requested page could not be found.');
    $this->assertSession()
      ->statusCodeEquals(404);
    // Verify the access cacheability metadata for custom 404 is bubbled.
    $this->assertCacheContext('user.roles');
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('/this-path-does-not-exist');
    $this->assertSession()
      ->pageTextContains('Admin-only 4xx response');
    $this->assertSession()
      ->pageTextNotContains('The requested page could not be found.');
    $this->assertSession()
      ->statusCodeEquals(404);
    // Verify the access cacheability metadata for custom 404 is bubbled.
    $this->assertCacheContext('user.roles');
  }

}