diff --git a/Test/BaseTest.php b/Test/BaseTest.php
index b1be7a17f..7f0f5c022 100644
--- a/Test/BaseTest.php
+++ b/Test/BaseTest.php
@@ -257,4 +257,9 @@ public function getPartialObject($object, $arguments = [], $mockMethods = [])
 
         return $mock;
     }
+
+    protected function assertInternalType(string $type, $value)
+    {
+        $this->assertEquals($type, gettype($value));
+    }
 }