如何模拟WebOperationContext进行单元测试？

Question

我正在尝试为以下 WCF Rest 服务编写一个单元测试（更多的是集成测试）。

我如何处理

GetAwesomeResultsAsXml()
嘲笑方面？

最好的方法是什么？  

WebOperationContext

Answer 1

public class AwesomeRestService : AwesomeRestServiceBase, IAwesomeRestService
    {
        public AwesomeSearchResults<AwesomeProductBase> GetAwesomeResultsAsXml()
        {
            return GetResults();
        }

        private static AwesomeSearchResults<AwesomeProductBase> GetResults()
        {
            var searchContext = AwesomeSearchContext
                               .Parse(WebOperationContext.Current);
            ..............
            ..............
            ..............
        }


    }

[ServiceContract]
    public interface IAwesomeRestService
    {
        [OperationContract]
        [WebInvoke(Method = "GET", ResponseFormat = WebMessageFormat.Xml,
        BodyStyle =  WebMessageBodyStyle.Bare,
            UriTemplate = "/search/xml")]
        AwesomeQueryResults<AwesomeProductBase> GetAwesomeResultsAsXml();


    }







public class AwesomeSearchContext
        {
            ................
            ................
            ................
             public static AwesomeSearchContext Parse 
                                           (WebOperationContext operationContext)
            {
                return WebOperationContext.Current != null ? new     
 AwesomeSearchContext(operationContext.IncomingRequest.UriTemplateMatch.QueryParameters) : null;
            }
        }

Answer 2

首先，你必须

// Prepare WebOperationContext
var factory = new ChannelFactory<IOauth2>(
    new WebHttpBinding(),
    new EndpointAddress("http://localhost:80"));

OperationContext.Current = new OperationContext(factory.CreateChannel() as IContextChannel);
Debug.Assert(WebOperationContext.Current != null);

=>

open "Solution Explorer > your test project > Reference"

=>

right-click the  "System.ServiceModel.Web"

参考：

press "add Fakes Assembly"

样品：

using Microsoft.QualityTools.Testing.Fakes;
using System.ServiceModel.Web.Fakes;

现在您可以在 WCF 服务代码中获取 WebOperationContext.Current.IncomingRequest.Headers["myCustomHeader"] 。

MSDN 上有关 MS Fakes 框架的更多信息：

https://msdn.microsoft.com/en-us/library/hh549176.aspx

Answer 3

https://code.google.com/p/moq/

) 或 rhinomocks 等模拟工具。 由于它们不允许您模拟静态成员，因此您需要将调用包装到 webcontext.current。 以下是包装静态 mmmember 并使用起订量进行测试的示例：

使用起订量模拟静态属性

Answer 4

using (ShimsContext.Create())
{
    var response = new ShimOutgoingWebResponseContext();
    var request = new ShimIncomingWebRequestContext();

    var ctx_hd = new WebHeaderCollection();
    ctx_hd.Add("myCustomHeader", "XXXX");
    request.HeadersGet = () => ctx_hd;

    var ctx = new ShimWebOperationContext
    {
        OutgoingResponseGet = () => response,
        IncomingRequestGet = () => request
    };
    ShimWebOperationContext.CurrentGet = () => ctx;

    //Test your code here...
}

Answer 5

using (ShimsContext.Create())
        {

            var response = new ShimOutgoingWebResponseContext();
            var ctx = new ShimWebOperationContext
            {
                OutgoingResponseGet = () => response
            };

            ShimWebOperationContext.CurrentGet = () => ctx;

            try
            {
                ParameterInspector.BeforeCall("operationName", new string[]{"some_argument"} );
            }
            catch (Exception e)
            {
                Assert.IsNull(e);
            }
        }

有关如何使用此功能的更多信息，请参阅

此答案

。

Answer 6

public class AwesomeRestServiceClient : ClientBase<IAwesomeRestService>, IAwesomeRestService
{
    public class AwesomeRestServiceClient(string address)
        : base(new WebHttpBinding(), new EndpointAddress(address))
    {   
        this.Endpoint.EndpointBehaviors.Add(new WebHttpBehavior());
    }

    public AwesomeSearchResults<AwesomeProductBase> GetAwesomeResultsAsXml()
    {
        using (new OperationContextScope(this.InnerChannel))
        {
            return base.Channel.GetAwesomeResultsAsXml();
        }
    }
}