我想为Web服务编写单元测试。我创建我的测试项目,引用我的web项目(不是服务引用,程序集引用),然后编写一些代码来测试Web服务 - 它们工作正常。但是,有一些服务可以确保用户使用HttpContext.Current.User.Identity.IsAuthenticated
登录到Web应用程序。
在测试的上下文中,没有HttpContext这样的东西,所以测试总是失败。这些Web服务应该如何进行单元测试?
答案 0 :(得分:25)
Here是一个相关的讨论。
我直接停止引用HttpContext.Current
。而是使用这个类:
public class HttpContextFactory
{
private static HttpContextBase m_context;
public static HttpContextBase Current
{
get
{
if (m_context != null)
return m_context;
if (HttpContext.Current == null)
throw new InvalidOperationException("HttpContext not available");
return new HttpContextWrapper(HttpContext.Current);
}
}
public static void SetCurrentContext(HttpContextBase context)
{
m_context = context;
}
}
并在我们的代码中使用HttpContextFactory.Current
代替HttpContext.Current
。
然后你在测试中写下这个:
HttpContextFactory.SetCurrentContext(GetMockedHttpContext());
其中GetMockedHttpContext()来自here,如下所示:
private System.Web.HttpContextBase GetMockedHttpContext()
{
var context = new Mock<HttpContextBase>();
var request = new Mock<HttpRequestBase>();
var response = new Mock<HttpResponseBase>();
var session = new Mock<HttpSessionStateBase>();
var server = new Mock<HttpServerUtilityBase>();
var user = new Mock<IPrincipal>();
var identity = new Mock<IIdentity>();
context.Setup(ctx => ctx.Request).Returns(request.Object);
context.Setup(ctx => ctx.Response).Returns(response.Object);
context.Setup(ctx => ctx.Session).Returns(session.Object);
context.Setup(ctx => ctx.Server).Returns(server.Object);
context.Setup(ctx => ctx.User).Returns(user.Object);
user.Setup(x => x.Identity).Returns(identity.Object);
identity.Setup(id => id.IsAuthenticated).Returns(true);
identity.Setup(id => id.Name).Returns("test");
return context.Object;
}
它使用名为mocking framework
的moq在测试项目中,您必须添加对System.Web
和System.Web.Abstractions
的引用,其中HttpContextBase
已定义。
答案 1 :(得分:2)
如果您正在使用模拟,则可以将此逻辑包装在另一个类中:
interface IAuthenticator
{
bool IsAuthenticated();
}
并实施真实的:
class Authenticator : IAuthenticator
{
bool IsAuthenticated()
{
return HttpContext.Current.User.Identity.IsAuthenticated;
}
}
但是在测试中,创建一个mock并返回true或false:
Mock<IAuthenticator> mock = new Mock<IAuthenticator>();
mock.Expect(x => x.IsAuthenticated()).Returns(true);
答案 2 :(得分:1)
您可能会考虑依赖System.Web.Abstractions.HttpContextBase而不是使用HttpContext.Current。 System.Web.Abstractions程序集已经包含了许多常见的ASP.NET Http *类。它们在整个ASP.NET MVC代码中使用。如果您使用的是IoC / DI框架,那么它非常易于使用。例如,在Ninject中:
Bind<HttpContextBase>.ToMethod(x => new HttpContextWrapper(HttpContext.Current));
然后在你的构造函数中......
public class SomeWebService
{
private HttpContextBase _httpContext;
public SomeWebService(HttpContextBase httpContext)
{
_httpContext = httpContext;
}
public void SomeOperationNeedingAuthorization()
{
IIdentity userIdentity = _httpContext.User.Identity;
if (!userIdentity.IsAuthenticated)
return;
// Do something here...
}
}
这样做过于简单了,但我希望你明白这一点......正如Aliostad所说,你可以使用Rhino Mocks或Moq等轻松模拟HttpContextBase来测试SomeOperationNeedingAuthorization。
答案 3 :(得分:0)
我最终在网络服务上添加了一个属性:
Private mIdentity As System.Security.Principal.IIdentity
Public Property Identity() As System.Security.Principal.IIdentity
Get
If mIdentity Is Nothing Then mIdentity = HttpContext.Current.User.Identity
Return mIdentity
End Get
Set(ByVal value As System.Security.Principal.IIdentity)
mIdentity = value
End Set
End Property
然后在我的网络服务方法中:
<WebMethod()> _
Public Function GetProject(ByVal projectId As Int32) As String
If Me.Identity.IsAuthenticated Then
'code here
End If
End Function
然后在我的测试中(我正在使用RhinoMocks):
Dim mockery As New MockRepository()
Dim mockIdentity As System.Security.Principal.IIdentity = mockery.DynamicMock(Of System.Security.Principal.IIdentity)()
Dim projectService As New TeamDynamix.Enterprise.Web.Next.ProjectService()
projectService.Identity = mockIdentity
mockIdentity.Stub(Function(i As System.Security.Principal.IIdentity) i.IsAuthenticated).Return(True)
答案 4 :(得分:0)
基于上面的解决方案,我在O2 Platform中实现了一个包装类,允许轻松使用这些模拟类,例如,这是我可以从HttpRequest.InputStream中编写和读取的方法。 p>
var mockHttpContext = new API_Moq_HttpContext();
var httpContext = mockHttpContext.httpContext();
httpContext.request_Write("<html><body>".line());
httpContext.request_Write(" this is a web page".line());
httpContext.request_Write("</body></html>");
return httpContext.request_Read();
有关详细信息,请参阅此博文:http://o2platform.wordpress.com/2011/04/05/mocking-httpcontext-httprequest-and-httpresponse-for-unittests-using-moq/