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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Reflection;
using Moq;
using Xunit;
using Assert = Microsoft.TestCommon.AssertEx;
namespace System.Web.Mvc.Test
{
public class ParameterDescriptorTest
{
[Fact]
public void BindingInfoProperty()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor(typeof(object), "someName");
// Act
ParameterBindingInfo bindingInfo = pd.BindingInfo;
// Assert
Assert.IsType(typeof(ParameterDescriptor).GetNestedType("EmptyParameterBindingInfo", BindingFlags.NonPublic),
bindingInfo);
}
[Fact]
public void DefaultValuePropertyDefaultsToNull()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor();
// Act
object defaultValue = pd.DefaultValue;
// Assert
Assert.Null(defaultValue);
}
[Fact]
public void GetCustomAttributesReturnsEmptyArrayOfAttributeType()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor();
// Act
ObsoleteAttribute[] attrs = (ObsoleteAttribute[])pd.GetCustomAttributes(typeof(ObsoleteAttribute), true);
// Assert
Assert.Empty(attrs);
}
[Fact]
public void GetCustomAttributesThrowsIfAttributeTypeIsNull()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor();
// Act & assert
Assert.ThrowsArgumentNull(
delegate { pd.GetCustomAttributes(null /* attributeType */, true); }, "attributeType");
}
[Fact]
public void GetCustomAttributesWithoutAttributeTypeCallsGetCustomAttributesWithAttributeType()
{
// Arrange
object[] expected = new object[0];
Mock<ParameterDescriptor> mockDescriptor = new Mock<ParameterDescriptor>() { CallBase = true };
mockDescriptor.Setup(d => d.GetCustomAttributes(typeof(object), true)).Returns(expected);
ParameterDescriptor pd = mockDescriptor.Object;
// Act
object[] returned = pd.GetCustomAttributes(true /* inherit */);
// Assert
Assert.Same(expected, returned);
}
[Fact]
public void IsDefinedReturnsFalse()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor();
// Act
bool isDefined = pd.IsDefined(typeof(object), true);
// Assert
Assert.False(isDefined);
}
[Fact]
public void IsDefinedThrowsIfAttributeTypeIsNull()
{
// Arrange
ParameterDescriptor pd = GetParameterDescriptor();
// Act & assert
Assert.ThrowsArgumentNull(
delegate { pd.IsDefined(null /* attributeType */, true); }, "attributeType");
}
private static ParameterDescriptor GetParameterDescriptor()
{
return GetParameterDescriptor(typeof(object), "someName");
}
private static ParameterDescriptor GetParameterDescriptor(Type type, string name)
{
Mock<ParameterDescriptor> mockDescriptor = new Mock<ParameterDescriptor>() { CallBase = true };
mockDescriptor.Setup(d => d.ParameterType).Returns(type);
mockDescriptor.Setup(d => d.ParameterName).Returns(name);
return mockDescriptor.Object;
}
}
}
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