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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Web.Mvc.Test;
using Microsoft.Web.UnitTestUtil;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Html.Test
{
public class ValueExtensionsTest
{
// Value
[Fact]
public void ValueWithNullNameThrows()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
// Act & Assert
Assert.ThrowsArgumentNull(
() => helper.Value(name: null),
"name"
);
}
[Fact]
public void ValueGetsValueFromViewData()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
// Act
MvcHtmlString html = helper.Value("foo");
// Assert
Assert.Equal("ViewDataFoo", html.ToHtmlString());
}
// ValueFor
[Fact]
public void ValueForWithNullExpressionThrows()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
// Act & Assert
Assert.ThrowsArgumentNull(
() => helper.ValueFor<FooBarModel, object>(expression: null),
"expression"
);
}
[Fact]
public void ValueForGetsExpressionValueFromViewDataModel()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
// Act
MvcHtmlString html = helper.ValueFor(m => m.foo);
// Assert
Assert.Equal("ViewItemFoo", html.ToHtmlString());
}
// All Value Helpers including ValueForModel
[Fact]
public void ValueHelpersWithErrorsGetValueFromModelState()
{
// Arrange
ViewDataDictionary<FooBarModel> viewDataWithErrors = new ViewDataDictionary<FooBarModel> { { "foo", "ViewDataFoo" } };
viewDataWithErrors.Model = new FooBarModel() { foo = "ViewItemFoo", bar = "ViewItemBar" };
viewDataWithErrors.TemplateInfo.HtmlFieldPrefix = "FieldPrefix";
ModelState modelStateFoo = new ModelState();
modelStateFoo.Value = HtmlHelperTest.GetValueProviderResult(new string[] { "AttemptedValueFoo" }, "AttemptedValueFoo");
viewDataWithErrors.ModelState["FieldPrefix.foo"] = modelStateFoo;
ModelState modelStateFooBar = new ModelState();
modelStateFooBar.Value = HtmlHelperTest.GetValueProviderResult(new string[] { "AttemptedValueFooBar" }, "AttemptedValueFooBar");
viewDataWithErrors.ModelState["FieldPrefix"] = modelStateFooBar;
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(viewDataWithErrors);
// Act & Assert
Assert.Equal("AttemptedValueFoo", helper.Value("foo").ToHtmlString());
Assert.Equal("AttemptedValueFoo", helper.ValueFor(m => m.foo).ToHtmlString());
Assert.Equal("AttemptedValueFooBar", helper.ValueForModel().ToHtmlString());
}
[Fact]
public void ValueHelpersWithEmptyNameConvertModelValueUsingCurrentCulture()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
string expectedModelValue = "{ foo = ViewItemFoo, bar = 1900/01/01 12:00:00 AM }";
// Act & Assert
using (HtmlHelperTest.ReplaceCulture("en-ZA", "en-US"))
{
Assert.Equal(expectedModelValue, helper.Value(name: String.Empty).ToHtmlString());
Assert.Equal(expectedModelValue, helper.ValueFor(m => m).ToHtmlString());
Assert.Equal(expectedModelValue, helper.ValueForModel().ToHtmlString());
}
}
[Fact]
public void ValueHelpersFormatValue()
{
// Arrange
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(GetValueViewData());
string expectedModelValue = "-{ foo = ViewItemFoo, bar = 1900/01/01 12:00:00 AM }-";
string expectedBarValue = "-1900/01/01 12:00:00 AM-";
// Act & Assert
using (HtmlHelperTest.ReplaceCulture("en-ZA", "en-US"))
{
Assert.Equal(expectedModelValue, helper.ValueForModel("-{0}-").ToHtmlString());
Assert.Equal(expectedBarValue, helper.Value("bar", "-{0}-").ToHtmlString());
Assert.Equal(expectedBarValue, helper.ValueFor(m => m.bar, "-{0}-").ToHtmlString());
}
}
[Fact]
public void ValueHelpersEncodeValue()
{
// Arrange
ViewDataDictionary<FooBarModel> viewData = new ViewDataDictionary<FooBarModel> { { "foo", @"ViewDataFoo <"">" } };
viewData.Model = new FooBarModel { foo = @"ViewItemFoo <"">" };
ModelState modelStateFoo = new ModelState();
modelStateFoo.Value = HtmlHelperTest.GetValueProviderResult(new string[] { @"AttemptedValueBar <"">" }, @"AttemptedValueBar <"">");
viewData.ModelState["bar"] = modelStateFoo;
HtmlHelper<FooBarModel> helper = MvcHelper.GetHtmlHelper(viewData);
// Act & Assert
Assert.Equal("<{ foo = ViewItemFoo <">, bar = (null) }", helper.ValueForModel("<{0}").ToHtmlString());
Assert.Equal("<ViewDataFoo <">", helper.Value("foo", "<{0}").ToHtmlString());
Assert.Equal("<ViewItemFoo <">", helper.ValueFor(m => m.foo, "<{0}").ToHtmlString());
Assert.Equal("AttemptedValueBar <">", helper.ValueFor(m => m.bar).ToHtmlString());
}
private sealed class FooBarModel
{
public string foo { get; set; }
public object bar { get; set; }
public override string ToString()
{
return String.Format("{{ foo = {0}, bar = {1} }}", foo ?? "(null)", bar ?? "(null)");
}
}
private static ViewDataDictionary<FooBarModel> GetValueViewData()
{
ViewDataDictionary<FooBarModel> viewData = new ViewDataDictionary<FooBarModel> { { "foo", "ViewDataFoo" } };
viewData.Model = new FooBarModel { foo = "ViewItemFoo", bar = new DateTime(1900, 1, 1, 0, 0, 0) };
return viewData;
}
}
}
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