void CheckOperationMessage (OperationMessage opmsg, string msg, Type type, string action)
{
Assert.AreEqual (type, opmsg.GetType (), "#com1");
Assert.AreEqual (msg, opmsg.Message.ToString (), "#com2");
Assert.AreEqual (0, opmsg.Extensions.Count, "#com3");
Assert.AreEqual (1, opmsg.ExtensibleAttributes.Length, "#com4");
Assert.IsNull (opmsg.Name, "#com5");
XmlAttribute attr = opmsg.ExtensibleAttributes [0];
Assert.AreEqual ("Action", attr.LocalName, "#ca1");
Assert.AreEqual ("http://www.w3.org/2006/05/addressing/wsdl", attr.NamespaceURI, "#ca2");
Assert.AreEqual (action, attr.Value, "#ca3");
}