diff --git a/tests/phpunit/CiviTest/CiviUnitTestCase.php b/tests/phpunit/CiviTest/CiviUnitTestCase.php
index 4dc889d045a3..b713dcb0c872 100644
--- a/tests/phpunit/CiviTest/CiviUnitTestCase.php
+++ b/tests/phpunit/CiviTest/CiviUnitTestCase.php
@@ -482,6 +482,8 @@ protected function tearDown() {
 
     $this->cleanTempDirs();
     $this->unsetExtensionSystem();
+    $this->assertEquals([], CRM_Core_DAO::$_nullArray);
+    $this->assertEquals(NULL, CRM_Core_DAO::$_nullObject);
   }
 
   /**
diff --git a/tests/phpunit/api/v3/ContributionPageTest.php b/tests/phpunit/api/v3/ContributionPageTest.php
index 7329a193e806..298b2b4342c2 100644
--- a/tests/phpunit/api/v3/ContributionPageTest.php
+++ b/tests/phpunit/api/v3/ContributionPageTest.php
@@ -87,6 +87,7 @@ public function tearDown() {
       $this->callAPISuccess('contact', 'delete', array('id' => $id));
     }
     $this->quickCleanUpFinancialEntities();
+    parent::tearDown();
   }
 
   /**