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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.Globalization;
using System.Linq;
using System.Web.Mvc;
using Moq;
using Xunit;
namespace Microsoft.Web.Mvc.Test
{
public class TempDataValueProviderFactoryTest
{
[Fact]
public void GetValueProvider_CorrectlyRetainsOrRemovesKeys()
{
// Arrange
string[] expectedRetainedKeys = new[]
{
"retainMe"
};
TempDataDictionary tempData = new TempDataDictionary
{
{ "retainMe", "retainMeValue" },
{ "removeMe", "removeMeValue" },
{ "previouslyRemoved", "previouslyRemovedValue" }
};
object dummy = tempData["previouslyRemoved"]; // mark value for removal
ControllerContext controllerContext = GetControllerContext(tempData);
TempDataValueProviderFactory factory = new TempDataValueProviderFactory();
// Act
IValueProvider valueProvider = factory.GetValueProvider(controllerContext);
ValueProviderResult nonExistentResult = valueProvider.GetValue("nonExistent");
ValueProviderResult removeMeResult = valueProvider.GetValue("removeme");
// Assert
Assert.Null(nonExistentResult);
Assert.Equal("removeMeValue", removeMeResult.AttemptedValue);
Assert.Equal(CultureInfo.InvariantCulture, removeMeResult.Culture);
// Verify that keys have been removed or retained correctly by the provider
Mock<ITempDataProvider> mockTempDataProvider = new Mock<ITempDataProvider>();
string[] retainedKeys = null;
mockTempDataProvider
.Setup(o => o.SaveTempData(controllerContext, It.IsAny<IDictionary<string, object>>()))
.Callback(
delegate(ControllerContext cc, IDictionary<string, object> d) { retainedKeys = d.Keys.ToArray(); });
tempData.Save(controllerContext, mockTempDataProvider.Object);
Assert.Equal(expectedRetainedKeys, retainedKeys);
}
[Fact]
public void GetValueProvider_EmptyTempData_ReturnsNull()
{
// Arrange
TempDataDictionary tempData = new TempDataDictionary();
ControllerContext controllerContext = GetControllerContext(tempData);
TempDataValueProviderFactory factory = new TempDataValueProviderFactory();
// Act
IValueProvider provider = factory.GetValueProvider(controllerContext);
// Assert
Assert.Null(provider);
}
private static ControllerContext GetControllerContext(TempDataDictionary tempData)
{
return new ControllerContext
{
Controller = new EmptyController
{
TempData = tempData
}
};
}
private sealed class EmptyController : Controller
{
}
}
}
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