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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.Routing;
using System.Web.UI;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Test
{
public class ViewMasterPageTest
{
[Fact]
public void GetModelFromViewPage()
{
// Arrange
ViewMasterPage vmp = new ViewMasterPage();
ViewPage vp = new ViewPage();
vmp.Page = vp;
object model = new object();
vp.ViewData = new ViewDataDictionary(model);
// Assert
Assert.Equal(model, vmp.Model);
}
[Fact]
public void GetModelFromViewPageStronglyTyped()
{
// Arrange
ViewMasterPage<FooModel> vmp = new ViewMasterPage<FooModel>();
ViewPage vp = new ViewPage();
vmp.Page = vp;
FooModel model = new FooModel();
vp.ViewData = new ViewDataDictionary(model);
// Assert
Assert.Equal(model, vmp.Model);
}
[Fact]
public void GetViewDataFromViewPage()
{
// Arrange
ViewMasterPage vmp = new ViewMasterPage();
ViewPage vp = new ViewPage();
vmp.Page = vp;
vp.ViewData = new ViewDataDictionary { { "a", "123" }, { "b", "456" } };
// Assert
Assert.Equal("123", vmp.ViewData.Eval("a"));
Assert.Equal("456", vmp.ViewData.Eval("b"));
}
[Fact]
public void GetViewItemFromViewPageTViewData()
{
// Arrange
MockViewMasterPageDummyViewData vmp = new MockViewMasterPageDummyViewData();
MockViewPageDummyViewData vp = new MockViewPageDummyViewData();
vmp.Page = vp;
vp.ViewData.Model = new DummyViewData { MyInt = 123, MyString = "abc" };
// Assert
Assert.Equal(123, vmp.ViewData.Model.MyInt);
Assert.Equal("abc", vmp.ViewData.Model.MyString);
}
[Fact]
public void GetWriterFromViewPage()
{
// Arrange
bool triggered = false;
HtmlTextWriter writer = new HtmlTextWriter(TextWriter.Null);
ViewMasterPage vmp = new ViewMasterPage();
MockViewPage vp = new MockViewPage();
vp.RenderCallback = delegate()
{
triggered = true;
Assert.Equal(writer, vmp.Writer);
};
vmp.Page = vp;
// Act & Assert
Assert.Null(vmp.Writer);
vp.RenderControl(writer);
Assert.Null(vmp.Writer);
Assert.True(triggered);
}
[Fact]
public void GetViewDataFromPageThrows()
{
// Arrange
ViewMasterPage vmp = new ViewMasterPage();
vmp.Page = new Page();
// Assert
Assert.Throws<InvalidOperationException>(
delegate { object foo = vmp.ViewData; },
"A ViewMasterPage can be used only with content pages that derive from ViewPage or ViewPage<TModel>.");
}
[Fact]
public void GetViewItemFromWrongGenericViewPageType()
{
// Arrange
MockViewMasterPageDummyViewData vmp = new MockViewMasterPageDummyViewData();
MockViewPageBogusViewData vp = new MockViewPageBogusViewData();
vmp.Page = vp;
vp.ViewData.Model = new SelectListItem();
// Assert
Assert.Throws<InvalidOperationException>(
delegate { object foo = vmp.ViewData.Model; },
"The model item passed into the dictionary is of type 'System.Web.Mvc.SelectListItem', but this dictionary requires a model item of type 'System.Web.Mvc.Test.ViewMasterPageTest+DummyViewData'.");
}
[Fact]
public void GetViewDataFromNullPageThrows()
{
// Arrange
MockViewMasterPageDummyViewData vmp = new MockViewMasterPageDummyViewData();
// Assert
Assert.Throws<InvalidOperationException>(
delegate { object foo = vmp.ViewData; },
"A ViewMasterPage can be used only with content pages that derive from ViewPage or ViewPage<TModel>.");
}
[Fact]
public void GetViewDataFromRegularPageThrows()
{
// Arrange
MockViewMasterPageDummyViewData vmp = new MockViewMasterPageDummyViewData();
vmp.Page = new Page();
// Assert
Assert.Throws<InvalidOperationException>(
delegate { object foo = vmp.ViewData; },
"A ViewMasterPage can be used only with content pages that derive from ViewPage or ViewPage<TModel>.");
}
[Fact]
public void GetHtmlHelperFromViewPage()
{
// Arrange
ViewMasterPage vmp = new ViewMasterPage();
ViewPage vp = new ViewPage();
vmp.Page = vp;
ViewContext vc = new Mock<ViewContext>().Object;
HtmlHelper<object> htmlHelper = new HtmlHelper<object>(vc, vp);
vp.Html = htmlHelper;
// Assert
Assert.Equal(vmp.Html, htmlHelper);
}
[Fact]
public void GetUrlHelperFromViewPage()
{
// Arrange
ViewMasterPage vmp = new ViewMasterPage();
ViewPage vp = new ViewPage();
vmp.Page = vp;
RequestContext rc = new RequestContext(new Mock<HttpContextBase>().Object, new RouteData());
UrlHelper urlHelper = new UrlHelper(rc);
vp.Url = urlHelper;
// Assert
Assert.Equal(vmp.Url, urlHelper);
}
[Fact]
public void ViewBagProperty_ReflectsViewData()
{
// Arrange
ViewPage page = new ViewPage();
ViewMasterPage masterPage = new ViewMasterPage();
masterPage.Page = page;
masterPage.ViewData["A"] = 1;
// Act & Assert
Assert.NotNull(masterPage.ViewBag);
Assert.Equal(1, masterPage.ViewBag.A);
}
[Fact]
public void ViewBagProperty_PropagatesChangesToViewData()
{
// Arrange
ViewPage page = new ViewPage();
ViewMasterPage masterPage = new ViewMasterPage();
masterPage.Page = page;
masterPage.ViewData["A"] = 1;
// Act
masterPage.ViewBag.A = "foo";
masterPage.ViewBag.B = 2;
// Assert
Assert.Equal("foo", masterPage.ViewData["A"]);
Assert.Equal(2, masterPage.ViewData["B"]);
}
// Master page types
private sealed class MockViewMasterPageDummyViewData : ViewMasterPage<DummyViewData>
{
}
// View data types
private sealed class DummyViewData
{
public int MyInt { get; set; }
public string MyString { get; set; }
}
// Page types
private sealed class MockViewPageBogusViewData : ViewPage<SelectListItem>
{
}
private sealed class MockViewPageDummyViewData : ViewPage<DummyViewData>
{
}
private sealed class MockViewPage : ViewPage
{
public Action RenderCallback { get; set; }
protected override void RenderChildren(HtmlTextWriter writer)
{
if (RenderCallback != null)
{
RenderCallback();
}
base.RenderChildren(writer);
}
}
private sealed class FooModel
{
}
}
}
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