单元测试中间件，如何将 HttpRequest 添加到 .NET Core 3.1 中的 HttpContext

Question

我正在思考如何测试一个 .NET Core 中间件。

public class MyMiddleware
    {
    public async Task Invoke(HttpContext context) {
    
      var requestProperties = GetPropertiesFromRequest(context.Request);
    } 
    
    public string GetPropertiesFromRequest(HttpRequest request) {
      //do stuff with request
    }
}

我设置了单元测试，我需要将 HttpContext 传递给中间件。我遇到的问题是我似乎找不到将 HttpRequest 添加到上下文的方法。

    [Fact]
    public async Task Middleware_should_get_properties_from_request()
    {
        var request = new HttpRequestMessage()
        {
            Method = HttpMethod.Get,
            RequestUri = new Uri("https://localhost:5001/"),
            Content = new StringContent({ 'message':'some content'}, Encoding.UTF8, "application/json"),
        };

    HttpContext context = new DefaultHttpContext();
    //context.Request = request;  //how to set the request on the context ?

     var myMiddleware = new MyMiddleware();
     await myMiddleware.Invoke(context);

     //Assert properties 
 }

HttpContext 上的请求属性是只读的。还有另一种方法可以将 httpRequest 添加到上下文吗？

Answer 1

只需根据上下文的请求设置属性属性。 DefaultHttpContext默认创建一个

//...

var httpContext = new DefaultHttpContext();

var json = JsonConvert.SerializeObject("{ 'message':'some content'}");
var stream = new MemoryStream(Encoding.UTF8.GetBytes(json));
httpContext.Request.Body = stream;

httpContext.Request.ContentLength = stream.Length;
httpContext.Request.ContentType = "application/json";

 var myMiddleware = new MyMiddleware();

//Act
await myMiddleware.Invoke(httpContext);

//Assert
//...

单元测试中间件，如何将 HttpRequest 添加到 .NET Core 3.1 中的 HttpContext

Unit test MiddleWare, how to add a HttpRequest to a HttpContext in .NET Core 3.1

c#

unit-testing

middleware

httprequest

.net-core