This tutorial by Charitha Kankanamge takes you through different approaches to testing Web services.
There are multiple approaches to invoking Web services, regardless of the platform or technology used to built such services. If a service consumer has access to the contract (WSDL) file of a given Web service, then, that particular service can be invoked via either a tool or a client application, whichever is the preferred option. This tutorial focuses on six different approaches to testing and invoking Web services.
Federico Cargnelutti 