calling web service return error in request

Question

 I have web service like the following

[ServiceContract] [ServiceKnownType(typeof(test))] interface ItestbService {     [OperationContract]     IList<test> RetrieveTestList(); }  public class TestWebService : ItestbService {     [WebInvoke(UriTemplate = "RetrieveTestList", Method = "GET", ResponseFormat = WebMessageFormat.Json,RequestFormat = WebMessageFormat.Json)]     public IList<test> RetrieveTestList()     {         return new test().ListOftests();     }

then in separate project I hosted it using the following code using svc file using the following line

<%@ ServiceHost Language="C#" Debug="true" Service="test.WebService.TestWebService" CodeBehind="test.WebService.TestWebService.cs" %>

and this is the web.config

<system.serviceModel>   <services>     <service name="test.WebService.TestWebService">       <endpoint address="" binding="webHttpBinding" contract="test.WebService.ItestbService" behaviorConfiguration="web">       </endpoint>     </service>   </services>   <behaviors>     <endpointBehaviors>       <behavior name="web">         <webHttp />         <dataContractSerializer maxItemsInObjectGraph="2147483647"/>       </behavior>     </endpointBehaviors>     <serviceBehaviors>       <behavior>         <dataContractSerializer maxItemsInObjectGraph="2147483647" />         <serviceMetadata httpGetEnabled="true" />         <serviceDebug includeExceptionDetailInFaults="true" />       </behavior>     </serviceBehaviors>   </behaviors>   <bindings>     <webHttpBinding>       <binding name="defaultRest">         <readerQuotas maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxDepth="64" maxNameTableCharCount="2147483647" />         <security mode="None" />       </binding>     </webHttpBinding>   </bindings>   <serviceHostingEnvironment multipleSiteBindingsEnabled="true" /> </system.serviceModel>

put when call in the browser the method it give bad request