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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.IO;
using System.Web.Routing;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Test
{
public class PartialViewResultTest
{
private const string _viewName = "My cool partial view.";
[Fact]
public void EmptyViewNameUsesActionNameAsViewName()
{
// Arrange
ControllerBase controller = new Mock<ControllerBase>().Object;
HttpContextBase httpContext = CreateHttpContext();
RouteData routeData = new RouteData();
routeData.Values["action"] = _viewName;
ControllerContext context = new ControllerContext(httpContext, routeData, controller);
Mock<IViewEngine> viewEngine = new Mock<IViewEngine>(MockBehavior.Strict);
Mock<IView> view = new Mock<IView>(MockBehavior.Strict);
List<IViewEngine> viewEngines = new List<IViewEngine>();
viewEngines.Add(viewEngine.Object);
Mock<ViewEngineCollection> viewEngineCollection = new Mock<ViewEngineCollection>(MockBehavior.Strict, viewEngines);
PartialViewResult result = new PartialViewResultHelper { ViewEngineCollection = viewEngineCollection.Object };
viewEngine
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName, It.IsAny<bool>()))
.Callback<ControllerContext, string, bool>(
(controllerContext, viewName, useCache) =>
{
Assert.Same(httpContext, controllerContext.HttpContext);
Assert.Same(routeData, controllerContext.RouteData);
})
.Returns(new ViewEngineResult(view.Object, viewEngine.Object));
viewEngineCollection
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName))
.Returns(new ViewEngineResult(view.Object, viewEngine.Object));
view
.Setup(o => o.Render(It.IsAny<ViewContext>(), httpContext.Response.Output))
.Callback<ViewContext, TextWriter>(
(viewContext, writer) =>
{
Assert.Same(view.Object, viewContext.View);
Assert.Same(result.ViewData, viewContext.ViewData);
Assert.Same(result.TempData, viewContext.TempData);
Assert.Same(controller, viewContext.Controller);
});
viewEngine
.Setup(e => e.ReleaseView(context, It.IsAny<IView>()))
.Callback<ControllerContext, IView>(
(controllerContext, releasedView) => { Assert.Same(releasedView, view.Object); });
// Act
result.ExecuteResult(context);
// Assert
viewEngine.Verify();
viewEngineCollection.Verify();
view.Verify();
}
[Fact]
public void EngineLookupFailureThrows()
{
// Arrange
ControllerBase controller = new Mock<ControllerBase>().Object;
HttpContextBase httpContext = CreateHttpContext();
RouteData routeData = new RouteData();
routeData.Values["action"] = _viewName;
ControllerContext context = new ControllerContext(httpContext, routeData, controller);
Mock<IViewEngine> viewEngine = new Mock<IViewEngine>(MockBehavior.Strict);
List<IViewEngine> viewEngines = new List<IViewEngine>();
viewEngines.Add(viewEngine.Object);
Mock<ViewEngineCollection> viewEngineCollection = new Mock<ViewEngineCollection>(MockBehavior.Strict, viewEngines);
PartialViewResult result = new PartialViewResultHelper { ViewEngineCollection = viewEngineCollection.Object };
viewEngineCollection
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName))
.Returns(new ViewEngineResult(new[] { "location1", "location2" }));
viewEngine
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName, It.IsAny<bool>()))
.Callback<ControllerContext, string, bool>(
(controllerContext, viewName, useCache) =>
{
Assert.Same(httpContext, controllerContext.HttpContext);
Assert.Same(routeData, controllerContext.RouteData);
})
.Returns(new ViewEngineResult(new[] { "location1", "location2" }));
// Act & Assert
Assert.Throws<InvalidOperationException>(
() => result.ExecuteResult(context),
@"The partial view '" + _viewName + @"' was not found or no view engine supports the searched locations. The following locations were searched:
location1
location2");
viewEngine.Verify();
viewEngineCollection.Verify();
}
[Fact]
public void EngineLookupSuccessRendersView()
{
// Arrange
ControllerBase controller = new Mock<ControllerBase>().Object;
HttpContextBase httpContext = CreateHttpContext();
RouteData routeData = new RouteData();
ControllerContext context = new ControllerContext(httpContext, routeData, controller);
Mock<IViewEngine> viewEngine = new Mock<IViewEngine>(MockBehavior.Strict);
List<IViewEngine> viewEngines = new List<IViewEngine>();
viewEngines.Add(viewEngine.Object);
Mock<ViewEngineCollection> viewEngineCollection = new Mock<ViewEngineCollection>(MockBehavior.Strict, viewEngines);
Mock<IView> view = new Mock<IView>(MockBehavior.Strict);
PartialViewResult result = new PartialViewResultHelper { ViewEngineCollection = viewEngineCollection.Object, ViewName = _viewName };
view
.Setup(o => o.Render(It.IsAny<ViewContext>(), httpContext.Response.Output))
.Callback<ViewContext, TextWriter>(
(viewContext, writer) =>
{
Assert.Same(view.Object, viewContext.View);
Assert.Same(result.ViewData, viewContext.ViewData);
Assert.Same(result.TempData, viewContext.TempData);
Assert.Same(controller, viewContext.Controller);
});
viewEngineCollection
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName))
.Returns(new ViewEngineResult(view.Object, viewEngine.Object));
viewEngine
.Setup(e => e.FindPartialView(It.IsAny<ControllerContext>(), _viewName, It.IsAny<bool>()))
.Callback<ControllerContext, string, bool>(
(controllerContext, viewName, useCache) =>
{
Assert.Same(httpContext, controllerContext.HttpContext);
Assert.Same(routeData, controllerContext.RouteData);
})
.Returns(new ViewEngineResult(view.Object, viewEngine.Object));
viewEngine
.Setup(e => e.ReleaseView(context, It.IsAny<IView>()))
.Callback<ControllerContext, IView>(
(controllerContext, releasedView) => { Assert.Same(releasedView, view.Object); });
// Act
result.ExecuteResult(context);
// Assert
viewEngineCollection.Verify();
viewEngine.Verify();
view.Verify();
}
[Fact]
public void ExecuteResultWithExplicitViewObject()
{
// Arrange
ControllerBase controller = new Mock<ControllerBase>().Object;
HttpContextBase httpContext = CreateHttpContext();
RouteData routeData = new RouteData();
routeData.Values["action"] = _viewName;
ControllerContext context = new ControllerContext(httpContext, routeData, controller);
Mock<IView> view = new Mock<IView>(MockBehavior.Strict);
PartialViewResult result = new PartialViewResultHelper { View = view.Object };
view
.Setup(o => o.Render(It.IsAny<ViewContext>(), httpContext.Response.Output))
.Callback<ViewContext, TextWriter>(
(viewContext, writer) =>
{
Assert.Same(view.Object, viewContext.View);
Assert.Same(result.ViewData, viewContext.ViewData);
Assert.Same(result.TempData, viewContext.TempData);
Assert.Same(controller, viewContext.Controller);
});
// Act
result.ExecuteResult(context);
// Assert
view.Verify();
}
private static HttpContextBase CreateHttpContext()
{
Mock<HttpContextBase> mockHttpContext = new Mock<HttpContextBase>();
mockHttpContext.Setup(c => c.Response.Output).Returns(TextWriter.Null);
return mockHttpContext.Object;
}
private class PartialViewResultHelper : PartialViewResult
{
public PartialViewResultHelper()
{
ViewEngineCollection = new ViewEngineCollection(new IViewEngine[] { new WebFormViewEngine() });
}
}
}
}
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