我在写单元测试的一些我们开发的Web服务。 我有一个[TestMethod的]该职位的web服务作为休息。 伟大的作品但它不触发我创建的事件处理方法。 经过调试，我注意到，在执行TestMethod的后事件处理程序越来越除尘器。 它去testcleanup。
有没有人遇到这个问题？ 下面的代码
[TestMethod,TestCategory("WebServices")]
public void ValidateWebServiceGetUserAuthToken()
{
string _jsonstringparams =
"{ \"Password\": \"xxx\", \"UserId\": \"xxxx\"}";
using (var _requestclient = new WebClient())
{
_requestclient.UploadStringCompleted += _requestclient_UploadStringCompleted;
var _uri = String.Format("{0}?format=Json", _webservicesurl);
_requestclient.Headers.Add(HttpRequestHeader.ContentType, "application/json");
_requestclient.UploadStringAsync(new Uri(_uri), "POST", _jsonstringparams);
}
}
void _requestclient_UploadStringCompleted(object sender, UploadStringCompletedEventArgs e)
{
if (e.Result != null)
{
var _responsecontent = e.Result.ToString();
Console.WriteLine(_responsecontent);
}
else
{
Assert.IsNotNull(e.Error.Message, "Test Case Failed");
}
}
问题是在于UploadStringAsync返回void（也就是说，它的发射后不管），并没有本质上让你检测完成。
有一对夫妇的选择。 第一个选项（这是一个我建议）是使用HttpClient的替代和使用PostAsync方法-你可以await 。 在这种情况下，我会做这样的事情：
[TestMethod, TestCategory("WebServices")]
public async Task ValidateWebServiceGetUserAuthToken()
{
string _jsonstringparams =
"{ \"Password\": \"xxx\", \"UserId\": \"xxxx\"}";
using (var httpClient = new HttpClient())
{
var _uri = String.Format("{0}?format=Json", _webservicesurl);
var stringContent = new StringContent(_jsonstringparams);
stringContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
HttpResponseMessage response = await httpClient.PostAsync(_uri, stringContent);
// Or whatever status code this service response with
Assert.AreEqual(HttpStatusCode.Accepted, response.StatusCode);
var responseText = await response.Content.ReadAsStringAsync();
// TODO: something more specific to your needs
Assert.IsTrue(!string.IsNullOrWhiteSpace(responseText));
}
}
另一种选择是改变你的完整事件处理信号返回到您的测试上载完成，并在您的测试，等待事件发生。 例如：
[TestMethod, TestCategory("WebServices")]
public void ValidateWebServiceGetUserAuthToken()
{
string _jsonstringparams =
"{ \"Password\": \"xxx\", \"UserId\": \"xxxx\"}";
using (var _requestclient = new WebClient())
{
_requestclient.UploadStringCompleted += _requestclient_UploadStringCompleted;
var _uri = String.Format("{0}?format=Json", _webservicesurl);
_requestclient.Headers.Add(HttpRequestHeader.ContentType, "application/json");
_requestclient.UploadStringAsync(new Uri(_uri), "POST", _jsonstringparams);
completedEvent.WaitOne();
}
}
private ManualResetEvent completedEvent = new ManualResetEvent(false);
void _requestclient_UploadStringCompleted(object sender, UploadStringCompletedEventArgs e)
{
if (e.Result != null)
{
var _responsecontent = e.Result.ToString();
Console.WriteLine(_responsecontent);
}
else
{
Assert.IsNotNull(e.Error.Message, "Test Case Failed");
}
completedEvent.Set();
}
除了上述问题的答案的帖子，我也加入到支持httpwebresponse所以我不必等待事件的方法。
public static AuthTokenResponse GetUserToken(string username, string password)
{
string _jsonstringparams =
String.Format("{{ \"Password\": \"{0}\", \"UserId\": \"{1}\"}}", password, username);
string _webservicesurl = ConfigurationManager.AppSettings["WebservicesUrl"];
HttpWebRequest _requestclient = (HttpWebRequest)WebRequest.Create(String.Format("{0}?format=Json", _webservicesurl));
_requestclient.ContentType = "application/json";
_requestclient.Method = "POST";
using (var streamWriter = new StreamWriter(_requestclient.GetRequestStream()))
{
streamWriter.Write(_jsonstringparams);
streamWriter.Flush();
streamWriter.Close();
var httpResponse = (HttpWebResponse)_requestclient.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
_responsecontent = streamReader.ReadToEnd();
}
AuthTokenResponse _clienttoken = JsonConvert.DeserializeObject<AuthTokenResponse>(_responsecontent);
return _clienttoken;
}
}
