diff --git a/core/modules/views_ui/src/Tests/DisplayTest.php b/core/modules/views_ui/src/Tests/DisplayTest.php
index 53e3556..4fab7d8 100644
--- a/core/modules/views_ui/src/Tests/DisplayTest.php
+++ b/core/modules/views_ui/src/Tests/DisplayTest.php
@@ -38,9 +38,7 @@ class DisplayTest extends UITestBase {
    * Tests adding a display.
    */
   public function testAddDisplay() {
-    $view = array(
-    );
-    $view = $this->randomView($view);
+    $view = $this->randomView();
     $this->assertNoText('Block');
     $this->assertNoText('Block 2');
 
@@ -48,29 +46,15 @@ public function testAddDisplay() {
     $this->assertText('Block');
     $this->assertNoText('Block 2');
 
-    $this->drupalPostForm(NULL, [], 'Block');
+    // Views has special form handling in views_ui_form_button_was_clicked()
+    // to be able to change the submit button text via JS, this simulates what
+    // the JS is doing.
+    $this->drupalPostForm(NULL, [], NULL, [], [], NULL, '&op=Block');
     $this->assertText('Block');
     $this->assertText('Block 2');
   }
 
   /**
-   * {@inheritdoc}
-   */
-  protected function handleForm(&$post, &$edit, &$upload, $submit, $form) {
-    $result = parent::handleForm($post, $edit, $upload, $submit, $form);
-    // We override the method to be able to post 'Block' as button. Views has
-    // its own special form handling in views_ui_form_button_was_clicked() to be
-    // able to change the submit button text via JS.
-    // By passing 'Block' as the button we are able to simulate what the JS is
-    // doing.
-    if ($submit === 'Block') {
-      $post['op'] = 'Block';
-      $result = TRUE;
-    }
-    return $result;
-  }
-
-  /**
    * Tests reordering of displays.
    */
   public function testReorderDisplay() {