diff -u b/core/tests/Drupal/Tests/Core/Route/RouterRoleTest.php b/core/tests/Drupal/Tests/Core/Route/RouterRoleTest.php
--- b/core/tests/Drupal/Tests/Core/Route/RouterRoleTest.php
+++ b/core/tests/Drupal/Tests/Core/Route/RouterRoleTest.php
@@ -111,6 +111,8 @@
    *   The path to check access for.
    * @param array $grant_accounts
    *   A list of accounts which should have access to the given path.
+   * @param array $deny_accounts
+   *   A list of accounts which should not have access to the given path.
    *
    * @see \Drupal\Tests\Core\Route\RouterRoleTest::getTestRouteCollection
    * @see \Drupal\Tests\Core\Route\RouterRoleTest::roleAccessProvider