diff -u b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
--- b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
+++ b/core/tests/Drupal/Tests/Component/Utility/SortArrayTest.php
@@ -324,13 +324,8 @@
    *   TRUE if the assertion passed; FALSE otherwise.
    */
   protected function assertBothNegativePositiveOrZero($expected, $result) {
-    if (!is_numeric($expected) || !is_numeric($result)) {
-      return $this->assertTrue(FALSE, 'Parameters are not numeric.');
-    }
-    if (($expected < 0 && $result < 0) || ($expected > 0 && $result > 0) || ($expected === 0 && $result === 0))  {
-      return $this->assertTrue(TRUE, 'Numbers are either both negative, both positive or both zero.');
-    }
-    $this->assertTrue(FALSE, 'Numbers are not either both negative, both positive or both zero.');
+    $this->assertTrue(is_numeric($expected) && is_numeric($result), 'Parameters are numeric.');
+    $this->assertTrue(($expected < 0 && $result < 0) || ($expected > 0 && $result > 0) || ($expected === 0 && $result === 0), 'Numbers are not either both negative, both positive or both zero.');
   }
 
 }