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linux-packaging-mono/external/aspnetwebstack/test/System.Web.Http.Test/ModelBinding/Binders/SimpleModelBinderProviderTest.cs

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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Web.Http.Metadata.Providers;
using System.Web.Http.Util;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http.ModelBinding.Binders
{
public class SimpleModelBinderProviderTest
{
[Fact]
public void ConstructorWithFactoryThrowsIfModelBinderFactoryIsNull()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new SimpleModelBinderProvider(typeof(object), (Func<IModelBinder>)null),
"modelBinderFactory");
}
[Fact]
public void ConstructorWithFactoryThrowsIfModelTypeIsNull()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new SimpleModelBinderProvider(null, () => null),
"modelType");
}
[Fact]
public void ConstructorWithInstanceThrowsIfModelBinderIsNull()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new SimpleModelBinderProvider(typeof(object), (IModelBinder)null),
"modelBinder");
}
[Fact]
public void ConstructorWithInstanceThrowsIfModelTypeIsNull()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new SimpleModelBinderProvider(null, new Mock<IModelBinder>().Object),
"modelType");
}
[Fact]
public void GetBinder_TypeDoesNotMatch_ReturnsNull()
{
// Arrange
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), new Mock<IModelBinder>().Object)
{
SuppressPrefixCheck = true
};
ModelBindingContext bindingContext = GetBindingContext(typeof(object));
// Act
IModelBinder binder = provider.GetBinder(null, bindingContext);
// Assert
Assert.Null(binder);
}
[Fact]
public void GetBinder_TypeMatches_PrefixNotFound_ReturnsNull()
{
// Arrange
IModelBinder binderInstance = new Mock<IModelBinder>().Object;
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), binderInstance);
ModelBindingContext bindingContext = GetBindingContext(typeof(string));
bindingContext.ValueProvider = new SimpleHttpValueProvider();
// Act
IModelBinder returnedBinder = provider.GetBinder(null, bindingContext);
// Assert
Assert.Null(returnedBinder);
}
[Fact]
public void GetBinder_TypeMatches_PrefixSuppressed_ReturnsFactoryInstance()
{
// Arrange
int numExecutions = 0;
IModelBinder theBinderInstance = new Mock<IModelBinder>().Object;
Func<IModelBinder> factory = delegate
{
numExecutions++;
return theBinderInstance;
};
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), factory)
{
SuppressPrefixCheck = true
};
ModelBindingContext bindingContext = GetBindingContext(typeof(string));
// Act
IModelBinder returnedBinder = provider.GetBinder(null, bindingContext);
returnedBinder = provider.GetBinder(null, bindingContext);
// Assert
Assert.Equal(2, numExecutions);
Assert.Equal(theBinderInstance, returnedBinder);
}
[Fact]
public void GetBinder_TypeMatches_PrefixSuppressed_ReturnsInstance()
{
// Arrange
IModelBinder theBinderInstance = new Mock<IModelBinder>().Object;
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), theBinderInstance)
{
SuppressPrefixCheck = true
};
ModelBindingContext bindingContext = GetBindingContext(typeof(string));
// Act
IModelBinder returnedBinder = provider.GetBinder(null, bindingContext);
// Assert
Assert.Equal(theBinderInstance, returnedBinder);
}
[Fact]
public void GetBinderThrowsIfBindingContextIsNull()
{
// Arrange
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), new Mock<IModelBinder>().Object);
// Act & assert
Assert.ThrowsArgumentNull(
delegate { provider.GetBinder(null, null); }, "bindingContext");
}
[Fact]
public void ModelTypeProperty()
{
// Arrange
SimpleModelBinderProvider provider = new SimpleModelBinderProvider(typeof(string), new Mock<IModelBinder>().Object);
// Act & assert
Assert.Equal(typeof(string), provider.ModelType);
}
private static ModelBindingContext GetBindingContext(Type modelType)
{
return new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => null, modelType)
};
}
}
}