单元测试ASP.NET Web API

Question

我正在测试一个简单的帖子：

public HttpResponseMessage<Document> PostDocument(Document document) 
{
    document = repository.Add(document); 

    var response = new HttpResponseMessage<Document>(document, HttpStatusCode.Created); 

    var uri = Url.Route(null, new { id = document.Id }); 

    response.Headers.Location = new Uri(Request.RequestUri, uri); 

    return response; 
}

但是，'URL'和'Request'显然是null。

有没有替代模拟出ControllerContext和HttpContext？

更新：

将其更改为：

 public HttpResponseMessage<Document> PostDocument(Document document,Uri location = null) 
{
    document = repository.Add(document); 

    var response = new HttpResponseMessage<Document>(document, HttpStatusCode.Created);

    if (location == null)
    {
        var uri = Url.Route(null, new { id = document.Id });
        location = new Uri(Request.RequestUri, uri);
    }

    response.Headers.Location = location;

    return response; 
}

更新2：

这个更好：

public HttpResponseMessage<Document> PostDocument(Document document)
{
    var uri = Url.Route(null, new { id = document.Id });
    var location = new Uri(Request.RequestUri, uri);

    return PostDocument(document, location);
}

[NonAction]
public HttpResponseMessage<Document> PostDocument(Document document, Uri location) 
{
    document = repository.Add(document); 

    var response = new HttpResponseMessage<Document>(document, HttpStatusCode.Created);
    response.Headers.Location = location;
    return response; 
}

Answer 1

使用FakeItEasy我在TestInitialize中完成了这项工作。

this.Controller.ControllerContext = new System.Web.Http.Controllers.HttpControllerContext();
this.Controller.Request = A.Fake<HttpRequestMessage>();

Answer 2

Request属性应该是可设置的，所以你只需要设置ControllerContext （它应该有一个no-arg构造函数，所以你甚至不必模拟）。

Answer 3

您的方法可能会将HttpRequestMessage作为参数接收。

 public HttpResponseMessage<Document> PostDocument(Document document, HttpRequestMessage message)
{

} 

您可以从中获取RequestUri。 在单元测试中，您可以将HttpRequestMessage对象的测试加倍。