only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/user/tests/src/Functional/RoleListBuilderTest.php
@@ -0,0 +1,57 @@
+<?php
+
+namespace Drupal\Tests\user\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Drupal\user\Entity\Role;
+
+/**
+ * Tests for the RolesListBuilder.
+ *
+ * @group user
+ * @see \Drupal\user\RoleListBuilder
+ */
+class RoleListBuilderTest extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaultTheme = 'stark';
+
+  /**
+   * {@inheritdoc}
+   */
+  protected static $modules = [
+    'user',
+  ];
+
+  /**
+   * Ensures the rows of the list are built correctly.
+   */
+  public function testListBuilder() {
+
+    // Create a role to view.
+    /** @var \Drupal\user\RoleInterface $role */
+    $role = Role::create([
+      'id' => 'role_1',
+      'label' => 'My Role',
+      'description' => 'Lorem ipsum',
+    ]);
+    $role->save();
+
+    // Log in as an administrator.
+    $admin = $this->createUser([], NULL, TRUE);
+    $this->drupalLogin($admin);
+
+    $this->drupalGet('/admin/people/roles');
+
+    $this->assertSession()->pageTextContains('Name');
+    $this->assertSession()->pageTextContains('Description');
+
+    // Check that the role values are displayed correctly.
+    $this->assertSession()->pageTextContains($role->label());
+    $this->assertSession()->pageTextContains($role->getDescription());
+
+  }
+
+}
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/user/tests/src/Functional/Update/AddUserRoleDescriptionTest.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace Drupal\Tests\user\Functional\Update;
+
+use Drupal\FunctionalTests\Update\UpdatePathTestBase;
+
+/**
+ * Ensures description is added to user role configurations.
+ *
+ * @group Update
+ */
+class AddUserRoleDescriptionTest extends UpdatePathTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function setDatabaseDumpFiles() {
+    $this->databaseDumpFiles = [
+      __DIR__ . '/../../../../../system/tests/fixtures/update/drupal-8.8.0.bare.standard.php.gz',
+    ];
+  }
+
+  /**
+   * Ensures description is added to user role configurations.
+   */
+  public function testUpdate() {
+    $anonymous_user_role_description = \Drupal::config('user.role.anonymous')->get('description');
+    $authenticated_user_role_description = \Drupal::config('user.role.authenticated')->get('description');
+    $this->assertNull($anonymous_user_role_description, 'Description does not exist for anonymous user role.');
+    $this->assertNull($authenticated_user_role_description, 'Description does not exist for authenticated user role.');
+
+    $this->runUpdates();
+
+    $anonymous_user_role_description = \Drupal::config('user.role.anonymous')->get('description');
+    $authenticated_user_role_description = \Drupal::config('user.role.authenticated')->get('description');
+    $this->assertEquals('The role given to users that are not logged in.', $anonymous_user_role_description, 'Description has been added for anonymous user role.');
+    $this->assertEquals('The basic role given to logged in users.', $authenticated_user_role_description, 'Description has been added for authenticated user role.');
+  }
+
+}