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GenericsTest.NullableD.cs
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GenericsTest.NullableD.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 double? GetNullableD(bool hasValue, double value);
[DllImport(nameof(GenericsNative))]
public static extern void GetNullableDOut(bool hasValue, double value, out double? pValue);
[DllImport(nameof(GenericsNative), EntryPoint = "GetNullableDPtr")]
public static extern ref readonly double? GetNullableDRef(bool hasValue, double value);
[DllImport(nameof(GenericsNative))]
public static extern double? AddNullableD(double? lhs, double? rhs);
[DllImport(nameof(GenericsNative))]
public static extern double? AddNullableDs([MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)] double?[] pValues, int count);
[DllImport(nameof(GenericsNative))]
public static extern double? AddNullableDs(in double? pValues, int count);
}
unsafe partial class GenericsTest
{
private static void TestNullableD()
{
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableD(true, 1.0));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetNullableDOut(true, 1.0, out double? value3));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableD(default, default));
double?[] values = new double?[] {
default,
default,
default,
default,
default
};
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableDs(values, values.Length));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddNullableDs(in values[0], values.Length));
}
}