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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.IO;
using System.Web.Mvc.Properties;
using System.Web.Routing;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Html.Test
{
public class ChildActionExtensionsTest
{
Mock<HtmlHelper> htmlHelper;
Mock<HttpContextBase> httpContext;
Mock<RouteBase> route;
Mock<IViewDataContainer> viewDataContainer;
RouteData originalRouteData;
RouteCollection routes;
ViewContext viewContext;
VirtualPathData virtualPathData;
public ChildActionExtensionsTest()
{
route = new Mock<RouteBase>();
route.Setup(r => r.GetVirtualPath(It.IsAny<RequestContext>(), It.IsAny<RouteValueDictionary>()))
.Returns(() => virtualPathData);
virtualPathData = new VirtualPathData(route.Object, "~/VirtualPath");
routes = new RouteCollection();
routes.Add(route.Object);
originalRouteData = new RouteData();
string returnValue = "";
httpContext = new Mock<HttpContextBase>();
httpContext.Setup(hc => hc.Request.ApplicationPath).Returns("~");
httpContext.Setup(hc => hc.Response.ApplyAppPathModifier(It.IsAny<string>()))
.Callback<string>(s => returnValue = s)
.Returns(() => returnValue);
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()));
viewContext = new ViewContext
{
RequestContext = new RequestContext(httpContext.Object, originalRouteData)
};
viewDataContainer = new Mock<IViewDataContainer>();
htmlHelper = new Mock<HtmlHelper>(viewContext, viewDataContainer.Object, routes);
}
[Fact]
public void GuardClauses()
{
// Act & Assert
Assert.ThrowsArgumentNull(
() => ChildActionExtensions.ActionHelper(null /* htmlHelper */, "abc", null /* controllerName */, null /* routeValues */, null /* textWriter */),
"htmlHelper"
);
Assert.ThrowsArgumentNullOrEmpty(
() => ChildActionExtensions.ActionHelper(htmlHelper.Object, null /* actionName */, null /* controllerName */, null /* routeValues */, null /* textWriter */),
"actionName"
);
Assert.ThrowsArgumentNullOrEmpty(
() => ChildActionExtensions.ActionHelper(htmlHelper.Object, String.Empty /* actionName */, null /* controllerName */, null /* routeValues */, null /* textWriter */),
"actionName"
);
}
[Fact]
public void ServerExecuteCalledWithWrappedChildActionMvcHandler()
{
// Arrange
IHttpHandler callbackHandler = null;
TextWriter callbackTextWriter = null;
bool callbackPreserveForm = false;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>(
(handler, textWriter, preserveForm) =>
{
callbackHandler = handler;
callbackTextWriter = textWriter;
callbackPreserveForm = preserveForm;
});
TextWriter stringWriter = new StringWriter();
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null /* routeValues */, stringWriter);
// Assert
Assert.NotNull(callbackHandler);
HttpHandlerUtil.ServerExecuteHttpHandlerWrapper wrapper = callbackHandler as HttpHandlerUtil.ServerExecuteHttpHandlerWrapper;
Assert.NotNull(wrapper);
Assert.NotNull(wrapper.InnerHandler);
ChildActionExtensions.ChildActionMvcHandler childHandler = wrapper.InnerHandler as ChildActionExtensions.ChildActionMvcHandler;
Assert.NotNull(childHandler);
Assert.Same(stringWriter, callbackTextWriter);
Assert.True(callbackPreserveForm);
}
[Fact]
public void RouteDataTokensIncludesParentActionViewContext()
{
// Arrange
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null /* routeValues */, null /* textWriter */);
// Assert
Assert.Same(viewContext, mvcHandler.RequestContext.RouteData.DataTokens[ControllerContext.ParentActionViewContextToken]);
}
[Fact]
public void RouteValuesIncludeNewActionName()
{
// Arrange
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null /* routeValues */, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.Equal("actionName", routeData.Values["action"]);
}
[Fact]
public void RouteValuesIncludeOldControllerNameWhenControllerNameIsNullOrEmpty()
{
// Arrange
originalRouteData.Values["controller"] = "oldController";
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null /* routeValues */, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.Equal("oldController", routeData.Values["controller"]);
}
[Fact]
public void RouteValuesIncludeNewControllerNameWhenControllNameIsNotEmpty()
{
// Arrange
originalRouteData.Values["controller"] = "oldController";
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", "newController", null /* routeValues */, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.Equal("newController", routeData.Values["controller"]);
}
[Fact]
public void PassedRouteValuesOverrideParentRequestRouteValues()
{
// Arrange
originalRouteData.Values["name1"] = "value1";
originalRouteData.Values["name2"] = "value2";
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, new RouteValueDictionary { { "name2", "newValue2" } }, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.Equal("value1", routeData.Values["name1"]);
Assert.Equal("newValue2", routeData.Values["name2"]);
Assert.Equal("newValue2", (routeData.Values[ChildActionValueProvider.ChildActionValuesKey] as DictionaryValueProvider<object>).GetValue("name2").RawValue);
}
[Fact]
public void NoChildActionValuesDictionaryCreatedIfNoRouteValuesPassed()
{
// Arrange
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.Null(routeData.Values[ChildActionValueProvider.ChildActionValuesKey]);
}
[Fact]
public void RouteValuesDoesNotIncludeExplicitlyPassedAreaName()
{
// Arrange
Route route = routes.MapRoute("my-area", "my-area");
route.DataTokens["area"] = "myArea";
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, new RouteValueDictionary { { "area", "myArea" } }, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.False(routeData.Values.ContainsKey("area"));
Assert.Null((routeData.Values[ChildActionValueProvider.ChildActionValuesKey] as DictionaryValueProvider<object>).GetValue("area"));
}
[Fact]
public void RouteValuesIncludeExplicitlyPassedAreaNameIfAreasNotInUse()
{
// Arrange
Route route = routes.MapRoute("my-area", "my-area");
MvcHandler mvcHandler = null;
httpContext.Setup(hc => hc.Server.Execute(It.IsAny<IHttpHandler>(), It.IsAny<TextWriter>(), It.IsAny<bool>()))
.Callback<IHttpHandler, TextWriter, bool>((handler, _, __) => mvcHandler = (MvcHandler)((HttpHandlerUtil.ServerExecuteHttpHandlerWrapper)handler).InnerHandler);
// Act
ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, new RouteValueDictionary { { "area", "myArea" } }, null /* textWriter */);
// Assert
RouteData routeData = mvcHandler.RequestContext.RouteData;
Assert.True(routeData.Values.ContainsKey("area"));
Assert.Equal("myArea", (routeData.Values[ChildActionValueProvider.ChildActionValuesKey] as DictionaryValueProvider<object>).GetValue("area").RawValue);
}
[Fact]
public void NoMatchingRouteThrows()
{
// Arrange
routes.Clear();
// Act & Assert
Assert.Throws<InvalidOperationException>(
() => ChildActionExtensions.ActionHelper(htmlHelper.Object, "actionName", null /* controllerName */, null /* routeValues */, null /* textWriter */),
MvcResources.Common_NoRouteMatched
);
}
}
}
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