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GenericsTest.SpanC.cs
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GenericsTest.SpanC.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 Span<char> GetSpanC(char e00);
[DllImport(nameof(GenericsNative))]
public static extern void GetSpanCOut(char e00, out Span<char> value);
[DllImport(nameof(GenericsNative), EntryPoint = "GetSpanCPtr")]
public static extern ref readonly Span<char> GetSpanCRef(char e00);
[DllImport(nameof(GenericsNative))]
public static extern Span<char> AddSpanC(Span<char> lhs, Span<char> rhs);
[DllImport(nameof(GenericsNative))]
public static extern Span<char> AddSpanCs(in Span<char> pValues, int count);
}
unsafe partial class GenericsTest
{
private static void TestSpanC()
{
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetSpanC('1'));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetSpanCOut('1', out Span<char> value3));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.GetSpanCRef('1'));
Assert.Throws<MarshalDirectiveException>(() => GenericsNative.AddSpanC(default, default));
Assert.Throws<MarshalDirectiveException>(() => {
Span<char> value = default;
GenericsNative.AddSpanCs(in value, 1);
});
}
}