Raise QNameElementTrait coverage

Author: tvdijen

tests/XML/QNameElementTraitTest.php

@@ -51,6 +51,19 @@ public function testMarshalling(): void
     }
 
 
+    /**
+     */
+    public function testMarshallingNonNamespacedQualifiedName(): void
+    {
+        $qnameElement = new QNameElement('Sender', null);
+
+        $this->assertEquals(
+            '<ssp:QNameElement xmlns:ssp="urn:x-simplesamlphp:namespace">Sender</ssp:QNameElement>',
+            strval($qnameElement)
+        );
+    }
+
+
     /**
      */
     public function testMarshallingInvalidQualifiedNameThrowsException(): void