dev#221102 : build SOAP test with HttpClientFactory

library/Class/WebService/MappedSoapClient.php

@@ -154,7 +154,7 @@ class Class_WebService_MappedSoapClient extends SoapClient {
   {
     if (static::$_testing)
       return $this->getWebClient()
-                  ->open_url($action, ['request' => $request,
+                  ->postData($action, ['request' => $request,
                                        'location' => $location,
                                        'version' => $version]);