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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System;
using System.Collections.Generic;
using System.Web.Mvc;
using Microsoft.Web.UnitTestUtil;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace Microsoft.Web.Mvc.ModelBinding.Test
{
public class ExtensibleModelBinderAdapterTest
{
[Fact]
public void BindModel_PropertyFilterIsSet_Throws()
{
// Arrange
ControllerContext controllerContext = GetControllerContext();
ModelBindingContext bindingContext = new ModelBindingContext
{
FallbackToEmptyPrefix = true,
ModelMetadata = new DataAnnotationsModelMetadataProvider().GetMetadataForType(null, typeof(SimpleModel)),
PropertyFilter = (new BindAttribute { Include = "FirstName " }).IsPropertyAllowed
};
ModelBinderProviderCollection binderProviders = new ModelBinderProviderCollection();
ExtensibleModelBinderAdapter shimBinder = new ExtensibleModelBinderAdapter(binderProviders);
// Act & assert
Assert.Throws<InvalidOperationException>(
delegate { shimBinder.BindModel(controllerContext, bindingContext); },
@"The new model binding system cannot be used when a property whitelist or blacklist has been specified in [Bind] or via the call to UpdateModel() / TryUpdateModel(). Use the [BindRequired] and [BindNever] attributes on the model type or its properties instead.");
}
[Fact]
public void BindModel_SuccessfulBind_RunsValidationAndReturnsModel()
{
// Arrange
ControllerContext controllerContext = GetControllerContext();
bool validationCalled = false;
ModelBindingContext bindingContext = new ModelBindingContext
{
FallbackToEmptyPrefix = true,
ModelMetadata = new DataAnnotationsModelMetadataProvider().GetMetadataForType(null, typeof(int)),
ModelName = "someName",
ModelState = controllerContext.Controller.ViewData.ModelState,
PropertyFilter = _ => true,
ValueProvider = new SimpleValueProvider
{
{ "someName", "dummyValue" }
}
};
Mock<IExtensibleModelBinder> mockIntBinder = new Mock<IExtensibleModelBinder>();
mockIntBinder
.Setup(o => o.BindModel(controllerContext, It.IsAny<ExtensibleModelBindingContext>()))
.Returns(
delegate(ControllerContext cc, ExtensibleModelBindingContext mbc)
{
Assert.Same(bindingContext.ModelMetadata, mbc.ModelMetadata);
Assert.Equal("someName", mbc.ModelName);
Assert.Same(bindingContext.ValueProvider, mbc.ValueProvider);
mbc.Model = 42;
mbc.ValidationNode.Validating += delegate { validationCalled = true; };
return true;
});
ModelBinderProviderCollection binderProviders = new ModelBinderProviderCollection();
binderProviders.RegisterBinderForType(typeof(int), mockIntBinder.Object, false /* suppressPrefixCheck */);
ExtensibleModelBinderAdapter shimBinder = new ExtensibleModelBinderAdapter(binderProviders);
// Act
object retVal = shimBinder.BindModel(controllerContext, bindingContext);
// Assert
Assert.Equal(42, retVal);
Assert.True(validationCalled);
Assert.True(bindingContext.ModelState.IsValid);
}
[Fact]
public void BindModel_SuccessfulBind_ComplexTypeFallback_RunsValidationAndReturnsModel()
{
// Arrange
ControllerContext controllerContext = GetControllerContext();
bool validationCalled = false;
List<int> expectedModel = new List<int> { 1, 2, 3, 4, 5 };
ModelBindingContext bindingContext = new ModelBindingContext
{
FallbackToEmptyPrefix = true,
ModelMetadata = new DataAnnotationsModelMetadataProvider().GetMetadataForType(null, typeof(List<int>)),
ModelName = "someName",
ModelState = controllerContext.Controller.ViewData.ModelState,
PropertyFilter = _ => true,
ValueProvider = new SimpleValueProvider
{
{ "someOtherName", "dummyValue" }
}
};
Mock<IExtensibleModelBinder> mockIntBinder = new Mock<IExtensibleModelBinder>();
mockIntBinder
.Setup(o => o.BindModel(controllerContext, It.IsAny<ExtensibleModelBindingContext>()))
.Returns(
delegate(ControllerContext cc, ExtensibleModelBindingContext mbc)
{
Assert.Same(bindingContext.ModelMetadata, mbc.ModelMetadata);
Assert.Equal("", mbc.ModelName);
Assert.Same(bindingContext.ValueProvider, mbc.ValueProvider);
mbc.Model = expectedModel;
mbc.ValidationNode.Validating += delegate { validationCalled = true; };
return true;
});
ModelBinderProviderCollection binderProviders = new ModelBinderProviderCollection();
binderProviders.RegisterBinderForType(typeof(List<int>), mockIntBinder.Object, false /* suppressPrefixCheck */);
ExtensibleModelBinderAdapter shimBinder = new ExtensibleModelBinderAdapter(binderProviders);
// Act
object retVal = shimBinder.BindModel(controllerContext, bindingContext);
// Assert
Assert.Equal(expectedModel, retVal);
Assert.True(validationCalled);
Assert.True(bindingContext.ModelState.IsValid);
}
[Fact]
public void BindModel_UnsuccessfulBind_BinderFails_ReturnsNull()
{
// Arrange
ControllerContext controllerContext = GetControllerContext();
Mock<IExtensibleModelBinder> mockListBinder = new Mock<IExtensibleModelBinder>();
mockListBinder.Setup(o => o.BindModel(controllerContext, It.IsAny<ExtensibleModelBindingContext>())).Returns(false).Verifiable();
ModelBinderProviderCollection binderProviders = new ModelBinderProviderCollection();
binderProviders.RegisterBinderForType(typeof(List<int>), mockListBinder.Object, true /* suppressPrefixCheck */);
ExtensibleModelBinderAdapter shimBinder = new ExtensibleModelBinderAdapter(binderProviders);
ModelBindingContext bindingContext = new ModelBindingContext
{
FallbackToEmptyPrefix = false,
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(List<int>)),
ModelState = controllerContext.Controller.ViewData.ModelState
};
// Act
object retVal = shimBinder.BindModel(controllerContext, bindingContext);
// Assert
Assert.Null(retVal);
Assert.True(bindingContext.ModelState.IsValid);
mockListBinder.Verify();
}
[Fact]
public void BindModel_UnsuccessfulBind_SimpleTypeNoFallback_ReturnsNull()
{
// Arrange
ControllerContext controllerContext = GetControllerContext();
Mock<ModelBinderProvider> mockBinderProvider = new Mock<ModelBinderProvider>();
mockBinderProvider.Setup(o => o.GetBinder(controllerContext, It.IsAny<ExtensibleModelBindingContext>())).Returns((IExtensibleModelBinder)null).Verifiable();
ModelBinderProviderCollection binderProviders = new ModelBinderProviderCollection
{
mockBinderProvider.Object
};
ExtensibleModelBinderAdapter shimBinder = new ExtensibleModelBinderAdapter(binderProviders);
ModelBindingContext bindingContext = new ModelBindingContext
{
FallbackToEmptyPrefix = true,
ModelMetadata = new DataAnnotationsModelMetadataProvider().GetMetadataForType(null, typeof(int)),
ModelState = controllerContext.Controller.ViewData.ModelState
};
// Act
object retVal = shimBinder.BindModel(controllerContext, bindingContext);
// Assert
Assert.Null(retVal);
Assert.True(bindingContext.ModelState.IsValid);
mockBinderProvider.Verify();
mockBinderProvider.Verify(o => o.GetBinder(controllerContext, It.IsAny<ExtensibleModelBindingContext>()), Times.AtMostOnce());
}
private static ControllerContext GetControllerContext()
{
return new ControllerContext
{
Controller = new SimpleController()
};
}
private class SimpleController : Controller
{
}
private class SimpleModel
{
public string FirstName { get; set; }
public string LastName { get; set; }
}
}
}
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