如何使用垫片和/或最小起订量模拟服务器传输方法

Question

我正在尝试模拟以下传输请求。

我尝试过使用 Moq，但它不喜欢它是一个方法调用这一事实。有任何想法吗？

我试过使用垫片，但它对我来说并不完全有意义。 https://social.msdn.microsoft.com/Forums/vstudio/en-US/4e423407-300d-46ba-bfc9-30465fb18f07/how-to-fake-httpcontextcurrent-using-shim?forum=vstest 我尝试以这种方式模拟 http 上下文，但它也没有用。 https://justinchmura.com/2014/06/26/mock-httpcontext/

public class MyModule1 : IHttpModule
{
    /// <summary>
    /// You will need to configure this module in the Web.config file of your
    /// web and register it with IIS before being able to use it. For more information
    /// see the following link: https://go.microsoft.com/?linkid=8101007
    /// </summary>
    #region IHttpModule Members

    public void Dispose()
    {
        //clean-up code here.
    }

    public void Init(HttpApplication context)
    {
        // Below is an example of how you can handle LogRequest event and provide 
        // custom logging implementation for it
        context.LogRequest += new EventHandler(OnLogRequest);
        context.BeginRequest += new EventHandler(OnBeginRequest);
    }

    private void OnBeginRequest(object sender, EventArgs e)
    {
        onbegin(new HttpContextWrapper(((HttpApplication)sender).Context));


    }

    private void onbegin(HttpContextBase context)
    {
        // other header stuff goes here
        context.Server.TransferRequest("bobsyouruncle", true);
    }

    #endregion

    public void OnLogRequest(Object source, EventArgs e)
    {
        //custom logging logic can go here
    }

Answer 1

类似于我在此处提供的答案中采用的方法

您可以创建一个工厂 method/function，将当前紧密耦合的实现问题包装在抽象中，从而实现更好的模拟和可测试性

重构模块

public class MyModule1 : IHttpModule {
    public void Dispose() {
        //clean-up code here.
    }

    public void Init(HttpApplication application) {
        // Below is an example of how you can handle LogRequest event and provide 
        // custom logging implementation for it
        application.LogRequest += new EventHandler(OnLogRequest);
        application.BeginRequest += new EventHandler(OnBeginRequest);
    }

    public Func<object, HttpContextBase> GetContext = (object sender) => {
        return new HttpContextWrapper(((HttpApplication)sender).Context);
    };

    public void OnBeginRequest(object sender, EventArgs e) {
        var context = GetContext(sender);
        onbegin(context);
    }

    private void onbegin(HttpContextBase context) {
        // other header stuff goes here
        context.Server.TransferRequest("bobsyouruncle", true);
    }

    public void OnLogRequest(Object source, EventArgs e) {
        //custom logging logic can go here
    }

    //...
}

测试使用 mock 时可以替换 GetContext 工厂函数。

例如

[TestMethod]
public void Server_Should_Transfer() {
    //Arrange
    var server = new Mock<HttpServerUtilityBase>();
    var context = new Mock.<HttpContextBase>();
    context.Setup(_ => _.Server).Returns(server.Object);

    var sut = new MyModule1();

    //replace with mock context for test
    sut.GetContext = (object sender) => context.Object;

    //Act
    sut.OnBeginRequest(new object(), EventArgs.Empty);

    //Assert
    server.Verify(_ => _.TransferRequest("bobsyouruncle", true), Times.AtLeastOnce);
}

如何使用垫片和/或最小起订量模拟服务器传输方法

How to mock out the server transfer method using shims and or Moq

c#

module

moq

mocking

shim