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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 Moq;
using Xunit;
namespace System.Web.Mvc.Html.Test
{
public class RenderPartialExtensionsTest
{
[Fact]
public void RenderPartialWithViewName()
{
// Arrange
SpyHtmlHelper helper = SpyHtmlHelper.Create();
// Act
helper.RenderPartial("partial-view");
// Assert
Assert.Equal("partial-view", helper.RenderPartialInternal_PartialViewName);
Assert.Same(helper.ViewData, helper.RenderPartialInternal_ViewData);
Assert.Null(helper.RenderPartialInternal_Model);
Assert.Same(helper.ViewContext.Writer, helper.RenderPartialInternal_Writer);
Assert.Same(ViewEngines.Engines, helper.RenderPartialInternal_ViewEngineCollection);
}
[Fact]
public void RenderPartialWithViewNameAndViewData()
{
// Arrange
SpyHtmlHelper helper = SpyHtmlHelper.Create();
ViewDataDictionary viewData = new ViewDataDictionary();
// Act
helper.RenderPartial("partial-view", viewData);
// Assert
Assert.Equal("partial-view", helper.RenderPartialInternal_PartialViewName);
Assert.Same(viewData, helper.RenderPartialInternal_ViewData);
Assert.Null(helper.RenderPartialInternal_Model);
Assert.Same(helper.ViewContext.Writer, helper.RenderPartialInternal_Writer);
Assert.Same(ViewEngines.Engines, helper.RenderPartialInternal_ViewEngineCollection);
}
[Fact]
public void RenderPartialWithViewNameAndModel()
{
// Arrange
SpyHtmlHelper helper = SpyHtmlHelper.Create();
object model = new object();
// Act
helper.RenderPartial("partial-view", model);
// Assert
Assert.Equal("partial-view", helper.RenderPartialInternal_PartialViewName);
Assert.Same(helper.ViewData, helper.RenderPartialInternal_ViewData);
Assert.Same(model, helper.RenderPartialInternal_Model);
Assert.Same(helper.ViewContext.Writer, helper.RenderPartialInternal_Writer);
Assert.Same(ViewEngines.Engines, helper.RenderPartialInternal_ViewEngineCollection);
}
[Fact]
public void RenderPartialWithViewNameAndModelAndViewData()
{
// Arrange
SpyHtmlHelper helper = SpyHtmlHelper.Create();
object model = new object();
ViewDataDictionary viewData = new ViewDataDictionary();
// Act
helper.RenderPartial("partial-view", model, viewData);
// Assert
Assert.Equal("partial-view", helper.RenderPartialInternal_PartialViewName);
Assert.Same(viewData, helper.RenderPartialInternal_ViewData);
Assert.Same(model, helper.RenderPartialInternal_Model);
Assert.Same(helper.ViewContext.Writer, helper.RenderPartialInternal_Writer);
Assert.Same(ViewEngines.Engines, helper.RenderPartialInternal_ViewEngineCollection);
}
internal class SpyHtmlHelper : HtmlHelper
{
public string RenderPartialInternal_PartialViewName;
public ViewDataDictionary RenderPartialInternal_ViewData;
public object RenderPartialInternal_Model;
public TextWriter RenderPartialInternal_Writer;
public ViewEngineCollection RenderPartialInternal_ViewEngineCollection;
SpyHtmlHelper(ViewContext viewContext, IViewDataContainer viewDataContainer)
: base(viewContext, viewDataContainer)
{
}
public static SpyHtmlHelper Create()
{
ViewDataDictionary viewData = new ViewDataDictionary();
Mock<ViewContext> mockViewContext = new Mock<ViewContext>() { DefaultValue = DefaultValue.Mock };
mockViewContext.Setup(c => c.HttpContext.Response.Output).Throws(new Exception("Response.Output should never be called."));
mockViewContext.Setup(c => c.ViewData).Returns(viewData);
mockViewContext.Setup(c => c.Writer).Returns(new StringWriter());
Mock<IViewDataContainer> container = new Mock<IViewDataContainer>();
container.Setup(c => c.ViewData).Returns(viewData);
return new SpyHtmlHelper(mockViewContext.Object, container.Object);
}
internal override void RenderPartialInternal(string partialViewName, ViewDataDictionary viewData, object model,
TextWriter writer, ViewEngineCollection viewEngineCollection)
{
RenderPartialInternal_PartialViewName = partialViewName;
RenderPartialInternal_ViewData = viewData;
RenderPartialInternal_Model = model;
RenderPartialInternal_Writer = writer;
RenderPartialInternal_ViewEngineCollection = viewEngineCollection;
writer.Write("This is the result of the view");
}
}
}
}
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