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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Test
{
public class AdditionalMetadataAttributeTest
{
[Fact]
public void GuardClauses()
{
// Act & assert
Assert.ThrowsArgumentNull(
() => new AdditionalMetadataAttribute(null, new object()),
"name");
AdditionalMetadataAttribute attr = new AdditionalMetadataAttribute("key", null);
Assert.ThrowsArgumentNull(
() => attr.OnMetadataCreated(null),
"metadata");
}
[Fact]
public void OnMetaDataCreatedSetsAdditionalValue()
{
// Arrange
string name = "name";
object value = new object();
ModelMetadata modelMetadata = new ModelMetadata(new Mock<ModelMetadataProvider>().Object, null, null, typeof(object), null);
AdditionalMetadataAttribute attr = new AdditionalMetadataAttribute(name, value);
// Act
attr.OnMetadataCreated(modelMetadata);
// Assert
Assert.Equal(modelMetadata.AdditionalValues[name], value);
Assert.Equal(attr.Name, name);
Assert.Equal(attr.Value, value);
}
[Fact]
public void MultipleAttributesCanSetValuesOnMetadata()
{
// Arrange
string name1 = "name1";
string name2 = "name2";
object value1 = new object();
object value2 = new object();
object value3 = new object();
ModelMetadata modelMetadata = new ModelMetadata(new Mock<ModelMetadataProvider>().Object, null, null, typeof(object), null);
AdditionalMetadataAttribute attr1 = new AdditionalMetadataAttribute(name1, value1);
AdditionalMetadataAttribute attr2 = new AdditionalMetadataAttribute(name2, value2);
AdditionalMetadataAttribute attr3 = new AdditionalMetadataAttribute(name1, value3);
// Act
attr1.OnMetadataCreated(modelMetadata);
attr2.OnMetadataCreated(modelMetadata);
attr3.OnMetadataCreated(modelMetadata);
// Assert
Assert.Equal(2, modelMetadata.AdditionalValues.Count);
Assert.Equal(modelMetadata.AdditionalValues[name1], value3);
Assert.Equal(modelMetadata.AdditionalValues[name2], value2);
Assert.NotEqual(attr1.TypeId, attr2.TypeId);
Assert.NotEqual(attr2.TypeId, attr3.TypeId);
Assert.NotEqual(attr3.TypeId, attr1.TypeId);
}
}
}
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