我的控制器中有以下行：
string lTempPath = Path.Combine(Server.MapPath("~/Temp"),lRandomFileName);
问题是服务器不是虚拟的,只能使用getter访问.
我得到了
“The method or operation is not implemented.”
我该如何模拟这台服务器？
我创建的测试如下：
[TestCase]
public void PreviewActionShouldGenerateUrlOfPdf()
{
//Arrange
var server = MockRepository.GenerateMock<HttpServerUtilityBase>();
server.Stub(s => s.MapPath("~Temp")).Return("~/Temp");
var httpContext = MockRepository.GenerateMock<HttpContextBase>();
httpContext.Stub(hc => hc.Server).Return(server);
httpContext.Server.Stub(s => s.MapPath("~/Temp")).Return("~/Temp");
var controller = new StudiesController()
{
ReportingService = MockRepository.GenerateMock<IReportingService>(),SecurityService = MockRepository.GenerateMock<ISecurityService>()
};
controller.ControllerContext = new ControllerContext(httpContext,new RouteData(),controller);
controller.ReportingService.Stub(rs => rs.GetStudyByGID(new Guid())).Return(new Study());
controller.ReportingService.Stub(rs => rs.ListPractices()).Return(new[] { new Practice(),new Practice() });
controller.SecurityService.Stub(ss => ss.GetUser("")).IgnoreArguments().Return(new User());
controller.ControllerContext.HttpContext = MockRepository.GeneratePartialMock<FakeHttpContext>("http://test.com");
controller.HttpContext.User = new FakePrincipal(new FakeIdentity("test"),new string[0]);
controller.ControllerContext.HttpContext.Stub(x => x.Request).Return(MockRepository.GenerateMock<HttpRequestBase>());
controller.ControllerContext.HttpContext.Request.Stub(x => x.Url).Return(new Uri("http://test.com"));
controller.ReportingService.Stub(
rs =>
rs.GenerateReport(new Study(),new Practice(),new User(),false,ReportGenerationOutputFormat.PDF)).IgnoreArguments().Return(new StudyReportSnapshot());
var content = new ContentResult();
//Act
var result = (ContentResult)controller.Preview(new Guid());
//Assert
Assert.AreEqual(result.Content,content.Content);
}
解决方法
假设您正在使用某种IOC / DI容器,则不应依赖Controller.Server.相反,你应该使用HttpServerUtilityBase.
此示例假定Ninject为IOC容器,但任何常用容器都将执行以下操作：
首先,将HttpServerUtilityBase注册到您的IOC容器,如下所示：
kernel.Bind<HttpServerUtilityBase>().ToMethod(c => new HttpServerUtilityWrapper(HttpContext.Current.Server));
这将确保在运行时您的应用程序将使用当前请求的服务器属性.
然后,向控制器添加一个接受HttpServerUtilityBase实例的构造函数：
public MyController(HttpServerUtilityBase server)
{
this._server = server;
}
现在,在您调用Server.MapPath之前的任何地方,只需调用_server.MapPath.
最后,在你的测试中,你可以像这样模拟HttpServerUtilityBase(假设Moq是模拟框架)：
var server = new Mock<HttpServerUtilityBase>(); server.Setup(s => s.MapPath(It.IsAny<string>())).Returns<string>(s => /* set up how you want MapPath to behave here */);
编辑
既然你提到你没有使用DI框架,你可以诉诸“穷人的依赖注入”.基本上添加一个重载的构造函数：
public MyController()
: this(new HttpServerUtilityWrapper(HttpContext.Current.Server))
{
}
public MyController(HttpServerUtilityBase server)
{
this._server = server;
}
这将允许生产代码使用当前的Web请求,但是您可以创建自己的HttpServerUtilityBase实现以用于测试.
