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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
using System.Linq;
using System.Reflection;
using Xunit;
namespace System.Windows.Markup.Tests;
public class TypeExtensionTests
{
[Fact]
public void Ctor_Default()
{
var extension = new TypeExtension();
Assert.Null(extension.Type);
Assert.Null(extension.TypeName);
}
[Theory]
[InlineData("")]
[InlineData("typeName")]
public void Ctor_String(string typeName)
{
var extension = new TypeExtension(typeName);
Assert.Null(extension.Type);
Assert.Equal(typeName, extension.TypeName);
}
[Fact]
public void Ctor_NullTypeName_ThrowsArgumemtNullException()
{
Assert.Throws<ArgumentNullException>("typeName", () => new TypeExtension((string)null!));
}
[Theory]
[InlineData(typeof(int))]
public void Ctor_Type(Type type)
{
var extension = new TypeExtension(type);
Assert.Equal(type, extension.Type);
Assert.Null(extension.TypeName);
}
[Fact]
public void Ctor_NullType_ThrowsArgumemtNullException()
{
Assert.Throws<ArgumentNullException>("type", () => new TypeExtension((Type)null!));
}
[Fact]
public void ProvideValue_HasType_ReturnsExpected()
{
var extension = new TypeExtension(typeof(int));
Assert.Equal(typeof(int), extension.ProvideValue(null));
}
[Fact]
public void ProvideValue_HasTypeName_ReturnsExpected()
{
var extension = new TypeExtension("Type");
var provider = new CustomServiceProvider
{
ServiceAction = serviceType => new CustomXamlTypeResolver
{
ResolveAction = qualifiedTypeName =>
{
Assert.Equal("Type", qualifiedTypeName);
return typeof(int);
}
}
};
Assert.Equal(typeof(int), extension.ProvideValue(provider));
Assert.Equal(typeof(int), extension.Type);
}
[Fact]
public void ProvideValue_NoTypeOrTypeName_ThrowsInvalidOperationException()
{
var extension = new TypeExtension();
Assert.Throws<InvalidOperationException>(() => extension.ProvideValue(null));
}
[Fact]
public void ProvideValue_NullServiceProvider_ThrowsArgumentNullException()
{
var extension = new TypeExtension("typeName");
Assert.Throws<ArgumentNullException>("serviceProvider", () => extension.ProvideValue(null));
}
[Theory]
[InlineData(1)]
[InlineData(null)]
public void ProvideValue_InvalidTypeResolver_ThrowsInvalidOperationException(object? service)
{
var extension = new TypeExtension("typeName");
var provider = new CustomServiceProvider
{
ServiceAction = serviceType => service!
};
Assert.Throws<InvalidOperationException>(() => extension.ProvideValue(provider));
}
[Fact]
public void ProvideValue_NullResolvedType_ThrowsInvalidOperationException()
{
var extension = new TypeExtension("typeName");
var provider = new CustomServiceProvider
{
ServiceAction = serviceType => new CustomXamlTypeResolver
{
ResolveAction = qualifiedTypeName =>
{
Assert.Equal("typeName", qualifiedTypeName);
return null!;
}
}
};
Assert.Throws<InvalidOperationException>(() => extension.ProvideValue(provider));
}
[Theory]
[InlineData("")]
[InlineData("typeName")]
public void TypeName_Set_GetReturnsExpected(string value)
{
var extension = new TypeExtension(typeof(int))
{
TypeName = value
};
Assert.Null(extension.Type);
Assert.Equal(value, extension.TypeName);
}
[Fact]
public void TypeName_SetNull_ThrowsArgumemtNullException()
{
var extension = new TypeExtension();
Assert.Throws<ArgumentNullException>("value", () => extension.TypeName = null);
}
[Theory]
[InlineData(typeof(int))]
public void Type_Set_GetReturnsExpected(Type value)
{
var extension = new TypeExtension("typeName") { Type = value };
Assert.Equal(value, extension.Type);
Assert.Null(extension.TypeName);
}
[Fact]
public void Type_SetNull_ThrowsArgumemtNullException()
{
var extension = new TypeExtension();
Assert.Throws<ArgumentNullException>("value", () => extension.Type = null);
}
[Theory]
[InlineData(typeof(InstanceDescriptor), true)]
[InlineData(typeof(string), true)]
[InlineData(typeof(int), false)]
[InlineData(null, false)]
public void TypeExtensionConverter_CanConvertTo_ReturnsExpected(Type? type, bool expected)
{
var extension = new TypeExtension("member");
TypeConverter converter = TypeDescriptor.GetConverter(extension);
Assert.Equal(expected, converter.CanConvertTo(type));
}
[Fact]
public void TypeExtensionConverter_ConvertToInstanceDescriptor_ReturnsExpected()
{
var extension = new TypeExtension(typeof(int));
TypeConverter converter = TypeDescriptor.GetConverter(extension);
InstanceDescriptor descriptor = Assert.IsType<InstanceDescriptor>(converter.ConvertTo(extension, typeof(InstanceDescriptor)));
Assert.Equal(new Type[] { typeof(Type) }, Assert.IsAssignableFrom<ConstructorInfo>(descriptor.MemberInfo).GetParameters().Select(p => p.ParameterType));
Assert.Equal(new Type[] { typeof(int) }, descriptor.Arguments);
}
[Fact]
public void TypeExtensionConverter_ConvertToString_ReturnsExpected()
{
var extension = new TypeExtension("member");
TypeConverter converter = TypeDescriptor.GetConverter(extension);
Assert.IsType<InstanceDescriptor>(converter.ConvertTo(extension, typeof(InstanceDescriptor)));
Assert.Equal(extension.ToString(), converter.ConvertTo(extension, typeof(string)));
}
[Fact]
public void TypeExtensionConverter_ConvertToNotTypeExtension_ThrowsArgumentException()
{
var extension = new TypeExtension("member");
TypeConverter converter = TypeDescriptor.GetConverter(extension);
Assert.Throws<ArgumentException>(() => converter.ConvertTo(1, typeof(InstanceDescriptor)));
}
[Fact]
public void TypeExtensionConverter_ConvertToInvalidType_ThrowsNotSupportedException()
{
var extension = new StaticExtension("member");
TypeConverter converter = TypeDescriptor.GetConverter(extension);
Assert.Throws<NotSupportedException>(() => converter.ConvertTo(extension, typeof(int)));
}
private class CustomServiceProvider : IServiceProvider
{
public Func<Type, object>? ServiceAction { get; set; }
public object GetService(Type serviceType) =>
ServiceAction is null ? throw new NotImplementedException() : ServiceAction(serviceType);
}
private class CustomXamlTypeResolver : IXamlTypeResolver
{
public Func<string, Type>? ResolveAction { get; set; }
public Type Resolve(string qualifiedTypeName) =>
ResolveAction is null ? throw new NotImplementedException() : ResolveAction(qualifiedTypeName);
}
}
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