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GenericsTest.NullableC.cs
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GenericsTest.NullableC.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 char? GetNullableC(bool hasValue, char value);
[DllImport(nameof(GenericsNative))]
public static extern void GetNullableCOut(bool hasValue, char value, out char? pValue);
[DllImport(nameof(GenericsNative), EntryPoint = "GetNullableCPtr")]
public static extern ref readonly char? GetNullableCRef(bool hasValue, char value);
[DllImport(nameof(GenericsNative))]
public static extern char? AddNullableC(char? lhs, char? rhs);
[DllImport(nameof(GenericsNative))]
public static extern char? AddNullableCs([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] char?[] pValues, int count);
[DllImport(nameof(GenericsNative))]
public static extern char? AddNullableCs(in char? pValues, int count);
}
unsafe partial class GenericsTest
{
private static void TestNullableC()
{
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableC(true, '1'));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableCOut(true, '1', out char? value3));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableC(default, default));
char?[] values = new char?[] {
default,
default,
default,
default,
default
};
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableCs(values, values.Length));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableCs(in values[0], values.Length));
}
}