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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.Linq;
using System.Web.Http.Controllers;
using System.Web.Http.Dependencies;
using System.Web.Http.ValueProviders;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http.ModelBinding
{
public class ModelBinderAttributeTest
{
[Fact]
public void Empty_BinderType()
{
HttpConfiguration config = new HttpConfiguration();
config.Services.Replace(typeof(ModelBinderProvider), new CustomModelBinderProvider());
ModelBinderAttribute attr = new ModelBinderAttribute();
ModelBinderProvider provider = attr.GetModelBinderProvider(config);
Assert.IsType<CustomModelBinderProvider>(provider);
}
[Fact]
public void Illegal_BinderType()
{
// Given an illegal type.
// Constructor shouldn't throw. But trying to instantiate the model binder provider will throw.
ModelBinderAttribute attr = new ModelBinderAttribute(typeof(object));
Assert.Equal(typeof(object), attr.BinderType); // can still lookup illegal type
Assert.Throws<InvalidOperationException>(
() => attr.GetModelBinderProvider(new HttpConfiguration())
);
}
[Fact]
public void BinderType_Provided()
{
HttpConfiguration config = new HttpConfiguration();
ModelBinderAttribute attr = new ModelBinderAttribute(typeof(CustomModelBinderProvider));
ModelBinderProvider provider = attr.GetModelBinderProvider(config);
Assert.IsType<CustomModelBinderProvider>(provider);
}
[Fact]
public void BinderType_From_DependencyResolver()
{
// To test dependency resolver, the registered type and actual type should be different.
HttpConfiguration config = new HttpConfiguration();
var mockDependencyResolver = new Mock<IDependencyResolver>();
mockDependencyResolver.Setup(r => r.GetService(typeof(CustomModelBinderProvider)))
.Returns(new SecondCustomModelBinderProvider());
config.DependencyResolver = mockDependencyResolver.Object;
ModelBinderAttribute attr = new ModelBinderAttribute(typeof(CustomModelBinderProvider));
ModelBinderProvider provider = attr.GetModelBinderProvider(config);
Assert.IsType<SecondCustomModelBinderProvider>(provider);
}
[Fact]
public void BinderType_From_DependencyResolver_ReleasedWhenConfigIsDisposed()
{
// Arrange
HttpConfiguration config = new HttpConfiguration();
var mockDependencyResolver = new Mock<IDependencyResolver>();
SecondCustomModelBinderProvider provider = new SecondCustomModelBinderProvider();
mockDependencyResolver.Setup(r => r.GetService(typeof(CustomModelBinderProvider))).Returns(provider);
config.DependencyResolver = mockDependencyResolver.Object;
ModelBinderAttribute attr = new ModelBinderAttribute(typeof(CustomModelBinderProvider));
attr.GetModelBinderProvider(config);
// Act
config.Dispose();
// Assert
mockDependencyResolver.Verify(dr => dr.Dispose(), Times.Once());
}
[Fact]
public void Set_ModelBinder_And_ValueProviders()
{
HttpConfiguration config = new HttpConfiguration();
ModelBinderAttribute attr = new ValueProviderAttribute(typeof(CustomValueProviderFactory)) { BinderType = typeof(CustomModelBinderProvider) };
IEnumerable<ValueProviderFactory> vpfs = attr.GetValueProviderFactories(config);
Assert.IsType<CustomModelBinderProvider>(attr.GetModelBinderProvider(config));
Assert.Equal(1, vpfs.Count());
Assert.IsType<CustomValueProviderFactory>(vpfs.First());
}
private class CustomModelBinderProvider : ModelBinderProvider
{
public override IModelBinder GetBinder(HttpActionContext actionContext, ModelBindingContext bindingContext)
{
throw new NotImplementedException();
}
}
private class SecondCustomModelBinderProvider : ModelBinderProvider
{
public override IModelBinder GetBinder(HttpActionContext actionContext, ModelBindingContext bindingContext)
{
throw new NotImplementedException();
}
}
private class CustomValueProviderFactory : ValueProviderFactory
{
public override IValueProvider GetValueProvider(HttpActionContext actionContext)
{
throw new NotImplementedException();
}
}
}
}
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