diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php b/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
index 3929649..5523518 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/PreviewTest.php
@@ -97,35 +97,22 @@ public function testPreviewWithPagersUI() {
     $this->assertTrue(!empty($elements), 'Full pager found.');
 
     // Verify elements and links to pages.
-    foreach ($elements as $page => $element) {
-      // Make element/page index 1-based.
-      $page++;
-      // We expect to find 5 elements: current page == 1, links to pages 2 and
-      // and 3, links to 'next >' and 'last >>' pages.
-      switch ($page) {
-        case 1:
-          $this->assertClass($element, 'pager-current', 'Element for current page has .pager-current class.');
-          $this->assertFalse(isset($element->a), 'Element for current page has no link.');
-          break;
-
-        case 2:
-        case 3:
-          $this->assertClass($element, 'pager-item', "Element for page $page has .pager-item class.");
-          $this->assertTrue($element->a, "Link to page $page found.");
-          break;
-
-        case 4:
-          $this->assertClass($element, 'pager-next', "Element for next page has .pager-next class.");
-          $this->assertTrue($element->a, "Link to next page found.");
-          break;
-
-        case 5:
-          $this->assertClass($element, 'pager-last', "Element for last page has .pager-last class.");
-          $this->assertTrue($element->a, "Link to last page found.");
-          break;
-
-      }
-    }
+    // We expect to find 5 elements: current page == 1, links to pages 2 and
+    // and 3, links to 'next >' and 'last >>' pages.
+    $this->assertClass($elements[0], 'pager-current', 'Element for current page has .pager-current class.');
+    $this->assertFalse(isset($elements[0]->a), 'Element for current page has no link.');
+
+    $this->assertClass($elements[1], 'pager-item', "Element for page 2 has .pager-item class.");
+    $this->assertTrue($elements[1]->a, "Link to page 2 found.");
+
+    $this->assertClass($elements[2], 'pager-item', "Element for page 3 has .pager-item class.");
+    $this->assertTrue($elements[2]->a, "Link to page 3 found.");
+
+    $this->assertClass($elements[3], 'pager-next', "Element for next page has .pager-next class.");
+    $this->assertTrue($elements[3]->a, "Link to next page found.");
+
+    $this->assertClass($elements[4], 'pager-last', "Element for last page has .pager-last class.");
+    $this->assertTrue($elements[4]->a, "Link to last page found.");
 
     // Test Mini Pager.
     $this->getPreviewAJAX('test_mini_pager', 'default', 3);
@@ -135,29 +122,16 @@ public function testPreviewWithPagersUI() {
     $this->assertTrue(!empty($elements), 'Mini pager found.');
 
     // Verify elements and links to pages.
-    foreach ($elements as $page => $element) {
-      // Make element/page index 1-based.
-      $page++;
-      // We expect to find 3 elements: previous page (with no link), current page == 1,
-      // and link to 'next >' page.
-      switch ($page) {
-        case 1:
-          $this->assertClass($element, 'pager-previous', 'Element for previous page has .pager-previous class.');
-          $this->assertFalse(isset($element->a), 'Element for previous page has no link.');
-          break;
-
-        case 2:
-          $this->assertClass($element, 'pager-current', 'Element for current page has .pager-current class.');
-          $this->assertFalse(isset($element->a), 'Element for current page has no link.');
-          break;
-
-        case 3:
-          $this->assertClass($element, 'pager-next', "Element for next page has .pager-next class.");
-          $this->assertTrue($element->a, "Link to next page found.");
-          break;
-
-      }
-    }
+    // We expect to find 3 elements: previous and current pages, with no link,
+    // and next page with a link.
+    $this->assertClass($elements[0], 'pager-previous', 'Element for previous page has .pager-previous class.');
+    $this->assertFalse(isset($elements[0]->a), 'Element for previous page has no link.');
+
+    $this->assertClass($elements[1], 'pager-current', 'Element for current page has .pager-current class.');
+    $this->assertFalse(isset($elements[1]->a), 'Element for current page has no link.');
+
+    $this->assertClass($elements[2], 'pager-next', "Element for next page has .pager-next class.");
+    $this->assertTrue($elements[2]->a, "Link to next page found.");
   }
 
   /**