reverted:
--- b/core/modules/config/src/Tests/ConfigDraggableListBuilderTest.php
+++ /dev/null
@@ -1,47 +0,0 @@
-<?php
-
-namespace Drupal\config\Tests;
-
-use Drupal\simpletest\WebTestBase;
-use Drupal\user\Entity\Role;
-/**
- * Tests draggable list builder.
- *
- * @group config
- */
-class ConfigDraggableListBuilderTest extends WebTestBase {
-
-  /**
-   * {@inheritdoc}
-   */
-  public static $modules = array('config_test');
-
-
-  /**
-   * Test draggable lists.
-   */
-  public function testDraggableList() {
-    $this->drupalLogin($this->drupalCreateUser(array('administer permissions')));
-
-    // Create more than 50 roles.
-    for ($i = 0; $i < 51; $i++) {
-      $role = Role::create([
-        'id' => 'role_' . $i,
-        'label' => "Role $i",
-      ]);
-
-      $role->save();
-    }
-
-    // Navigate to Roles page
-    $this->drupalGet('admin/people/roles');
-
-    // Test for the page title.
-    $this->assertTitle(t('Roles') . ' | Drupal');
-
-    // Count the number of rows in table.
-    $rows = $this->xpath('//form[@class="user-admin-roles-form"]/table/tbody/tr');
-    $this->assertTrue(count($rows) > 50, 'All roles are visible on admin page');
-  }
-
-}
only in patch2:
unchanged:
--- /dev/null
+++ b/core/modules/config/tests/src/Functional/ConfigDraggableListBuilderTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace Drupal\Tests\config\Functional;
+
+use Drupal\Tests\BrowserTestBase;
+use Drupal\user\Entity\Role;
+
+/**
+ * Tests draggable list builder.
+ *
+ * @group config
+ */
+class ConfigDraggableListBuilderTest extends BrowserTestBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public static $modules = array('config_test');
+
+  /**
+   * Test draggable lists.
+   */
+  public function testDraggableList() {
+    $this->drupalLogin($this->drupalCreateUser(array('administer permissions')));
+
+    // Create more than 50 roles.
+    for ($i = 0; $i < 51; $i++) {
+      $role = Role::create([
+        'id' => 'role_' . $i,
+        'label' => "Role $i",
+      ]);
+      $role->save();
+    }
+
+    // Navigate to Roles page
+    $this->drupalGet('admin/people/roles');
+
+    // Test for the page title.
+    $this->assertSession()->titleEquals(t('Roles') . ' | Drupal');
+
+    // Count the number of rows in table.
+    $rows = $this->xpath('//form[@class="user-admin-roles-form"]/table/tbody/tr');
+    $this->assertGreaterThan(50, count($rows));
+    for ($i = 0; $i < 51; $i++) {
+      $this->assertSession()->pageTextContains("Role $i");
+    }
+  }
+
+}