如何在FakeHttpContext中设置Request.Header以进行单元测试

Question

我有一个FakeHttpContext我一直在尝试修改以包含一些标题用于测试目的

public static HttpContext FakeHttpContext()
{
    var httpRequest = new HttpRequest("", "http://stackoverflow/", "");
    var stringWriter = new StringWriter();
    var httpResponse = new HttpResponse(stringWriter);
    var httpContext = new HttpContext(httpRequest, httpResponse);   

    var sessionContainer = new HttpSessionStateContainer("id", new SessionStateItemCollection(),
                                                    new HttpStaticObjectsCollection(), 10, true,
                                                    HttpCookieMode.AutoDetect,
                                                    SessionStateMode.InProc, false);

    httpContext.Items["AspSession"] = typeof(HttpSessionState).GetConstructor(
                                        BindingFlags.NonPublic | BindingFlags.Instance,
                                        null, CallingConventions.Standard,
                                        new[] { typeof(HttpSessionStateContainer) },
                                        null)
                                .Invoke(new object[] { sessionContainer });

    return httpContext;
 }

此作品,未经头,但是当我添加任何的代码行中之间的HttpRequest和StringWriter的线.

    httpRequest.Headers.Add("blah", "1234");
    httpRequest.Headers["blah"] = "1234";

它抛出

System.Web.dll中发生了'System.PlatformNotSupportedException'类型的异常,但未在用户代码中处理

• 为什么我得到那个例外？
• 有没有可能的方法将标头添加到HttpContext以测试 WebApi控制器？

Answer 1

我刚刚发现,使用HttpRequestMessage类,您可以轻松添加标头以测试WebAPI控制器,而无需创建任何假的 HttpContext.

var request = new HttpRequestMessage(HttpMethod.Get, "http://stackoverflow");
request.Headers.Add("deviceId","1234");
_myController.Request = request;

Answer 2

我正在使用 .Net Core 3.1 和 Moq 框架。我创建了一个 DefaultHttpContext，在那里设置标题，最后将它分配给控制器 ControllerContext 构造函数。

var httpContext = new DefaultHttpContext();
httpContext.Request.Headers["X-Example"] = "test-header";
var controller = new ExampleController(mockClient.Object, mockLogger.Object) 
{ 
    ControllerContext = new ControllerContext()
    {
        HttpContext = httpContext
    }
};

来源：https : //www.thecodebuzz.com/unit-test-mock-httprequest-in-asp-net-core-controller/