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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 System.Web.Http.Validation;
using System.Web.TestUtil;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Http.ModelBinding
{
public class ModelBindingContextTest
{
[Fact]
public void CopyConstructor()
{
// Arrange
ModelBindingContext originalBindingContext = new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(object)),
ModelName = "theName",
ModelState = new ModelStateDictionary(),
ValueProvider = new SimpleHttpValueProvider()
};
// Act
ModelBindingContext newBindingContext = new ModelBindingContext(originalBindingContext);
// Assert
Assert.Null(newBindingContext.ModelMetadata);
Assert.Equal("", newBindingContext.ModelName);
Assert.Equal(originalBindingContext.ModelState, newBindingContext.ModelState);
Assert.Equal(originalBindingContext.ValueProvider, newBindingContext.ValueProvider);
}
[Fact]
public void ModelProperty()
{
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(null, typeof(int))
};
// Act & assert
MemberHelper.TestPropertyValue(bindingContext, "Model", 42);
}
[Fact]
public void ModelProperty_ThrowsIfModelMetadataDoesNotExist()
{
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext();
// Act & assert
Assert.Throws<InvalidOperationException>(
() => bindingContext.Model = null,
"The ModelMetadata property must be set before accessing this property.");
}
[Fact]
public void ModelNameProperty()
{
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext();
// Act & assert
Assert.Reflection.StringProperty(bindingContext, bc => bc.ModelName, String.Empty);
}
[Fact]
public void ModelStateProperty()
{
// Arrange
ModelBindingContext bindingContext = new ModelBindingContext();
ModelStateDictionary modelState = new ModelStateDictionary();
// Act & assert
MemberHelper.TestPropertyWithDefaultInstance(bindingContext, "ModelState", modelState);
}
[Fact]
public void ModelAndModelTypeAreFedFromModelMetadata()
{
// Act
ModelBindingContext bindingContext = new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => 42, typeof(int))
};
// Assert
Assert.Equal(42, bindingContext.Model);
Assert.Equal(typeof(int), bindingContext.ModelType);
}
[Fact]
public void ValidationNodeProperty()
{
// Act
ModelBindingContext bindingContext = new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => 42, typeof(int))
};
// Act & assert
MemberHelper.TestPropertyWithDefaultInstance(bindingContext, "ValidationNode", new ModelValidationNode(bindingContext.ModelMetadata, "someName"));
}
[Fact]
public void ValidationNodeProperty_DefaultValues()
{
// Act
ModelBindingContext bindingContext = new ModelBindingContext
{
ModelMetadata = new EmptyModelMetadataProvider().GetMetadataForType(() => 42, typeof(int)),
ModelName = "theInt"
};
// Act
ModelValidationNode validationNode = bindingContext.ValidationNode;
// Assert
Assert.NotNull(validationNode);
Assert.Equal(bindingContext.ModelMetadata, validationNode.ModelMetadata);
Assert.Equal(bindingContext.ModelName, validationNode.ModelStateKey);
}
}
}
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