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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.
// See the LICENSE file in the project root for more information.
using System.Collections.Generic;
using Xunit;
namespace System.Reflection.Emit.Tests
{
public class TypeBuilderMakeGenericType
{
public static IEnumerable<object[]> MakeGenericType_TestData()
{
string mscorlibFullName = typeof(int).GetTypeInfo().Assembly.FullName;
yield return new object[] { new string[] { "U", "T" }, new Type[] { typeof(string), typeof(int) }, "TestType[[System.String, " + mscorlibFullName + "],[System.Int32, " + mscorlibFullName + "]]" };
yield return new object[] { new string[] { "U", "T" }, new Type[] { typeof(MakeGenericTypeClass), typeof(MakeGenericTypeInterface) }, "TestType[[System.Reflection.Emit.Tests.MakeGenericTypeClass, System.Reflection.Emit.Tests, Version=999.999.999.999, Culture=neutral, PublicKeyToken=9d77cc7ad39b68eb],[System.Reflection.Emit.Tests.MakeGenericTypeInterface, System.Reflection.Emit.Tests, Version=999.999.999.999, Culture=neutral, PublicKeyToken=9d77cc7ad39b68eb]]" };
yield return new object[] { new string[] { "U" }, new Type[] { typeof(string) }, "TestType[[System.String, " + mscorlibFullName + "]]" };
}
[Theory]
[MemberData(nameof(MakeGenericType_TestData))]
public void MakeGenericType(string[] genericParams, Type[] typeArguments, string expectedFullName)
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.NotPublic);
GenericTypeParameterBuilder[] typeGenParam = type.DefineGenericParameters(genericParams);
Type genericType = type.MakeGenericType(typeArguments);
Assert.Equal(expectedFullName, genericType.FullName);
}
[Fact]
public void MakeGenericType_EmptyTypeArguments_ThrowsInvalidOperationException()
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.NotPublic);
Assert.Throws<InvalidOperationException>(() => type.MakeGenericType(new Type[0]));
}
[Fact]
public void MakeGenericType_NullTypeArguments_ThrowsArgumentNullException()
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.NotPublic);
type.DefineGenericParameters("T", "U");
Assert.Throws<ArgumentNullException>("typeArguments", () => type.MakeGenericType(null));
}
[Fact]
public void MakeGenericType_NullObjectInTypeArguments_ThrowsArgumentNullException()
{
TypeBuilder type = Helpers.DynamicType(TypeAttributes.NotPublic);
type.DefineGenericParameters("T", "U");
Assert.Throws<ArgumentNullException>("typeArguments", () => type.MakeGenericType(new Type[] { null, null }));
}
}
public class MakeGenericTypeClass { }
public interface MakeGenericTypeInterface { }
}
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