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GenericsTest.NullableU.cs
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GenericsTest.NullableU.cs
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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;
using System.Runtime.InteropServices;
using Xunit;
unsafe partial class GenericsNative
{
[DllImport(nameof(GenericsNative))]
public static extern uint? GetNullableU(bool hasValue, uint value);
[DllImport(nameof(GenericsNative))]
public static extern void GetNullableUOut(bool hasValue, uint value, out uint? pValue);
[DllImport(nameof(GenericsNative), EntryPoint = "GetNullableUPtr")]
public static extern ref readonly uint? GetNullableURef(bool hasValue, uint value);
[DllImport(nameof(GenericsNative))]
public static extern uint? AddNullableU(uint? lhs, uint? rhs);
[DllImport(nameof(GenericsNative))]
public static extern uint? AddNullableUs([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] uint?[] pValues, int count);
[DllImport(nameof(GenericsNative))]
public static extern uint? AddNullableUs(in uint? pValues, int count);
}
unsafe partial class GenericsTest
{
private static void TestNullableU()
{
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableU(true, 1u));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableUOut(true, 1u, out uint? value3));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableU(default, default));
uint?[] values = new uint?[] {
default,
default,
default,
default,
default
};
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableUs(values, values.Length));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableUs(in values[0], values.Length));
}
}