core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
index 4e4f613..95bd570 100644
--- a/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
+++ b/core/tests/Drupal/Tests/Core/Config/ConfigFactoryTest.php
@@ -81,6 +81,10 @@ public function testRename() {
       ->method('invalidateTags')
       ->with($old->getCacheTags());
 
+    $this->storage->expects($this->once())
+      ->method('rename')
+      ->with($old->getName(), $new->getName());
+
     $this->configFactory->rename($old->getName(), $new->getName());
   }