// 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.
 
#nullable disable
 
using System;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CSharp.Completion.Providers;
using Microsoft.CodeAnalysis.Test.Utilities;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Completion.CompletionProviders;
 
[Trait(Traits.Feature, Traits.Features.Completion)]
public class FunctionPointerUnmanagedCallingConventionCompletionProviderTests : AbstractCSharpCompletionProviderTests
{
    internal override Type GetCompletionProviderType() => typeof(FunctionPointerUnmanagedCallingConventionCompletionProvider);
 
    [Fact]
    public async Task TypeFound()
    {
        var markup = """
            namespace System.Runtime.CompilerServices
            {
                public class CallConvUnitTest { }
            }
 
            class C
            {
                delegate* unmanaged[$$] <int, string> f;
            }
            """;
        await VerifyItemExistsAsync(markup, "UnitTest");
    }
 
    [Fact]
    public async Task TypeFoundSecondCallingConvention()
    {
        var markup = """
            namespace System.Runtime.CompilerServices
            {
                public class CallConvUnitTest { }
            }
 
            class C
            {
                delegate* unmanaged[Thiscall, $$] <int, string> f;
            }
            """;
        await VerifyItemExistsAsync(markup, "UnitTest");
    }
 
    [Theory]
    [InlineData("Cdecl")]
    [InlineData("Fastcall")]
    [InlineData("Thiscall")]
    [InlineData("Stdcall")]
    public async Task PredefinedCallingConventionFound(string callingConvention)
    {
        // We explicitly create a project with no references (not even common references) to ensure we
        // get the defaults
        var markup = """
            <Workspace>
                <Project Language="C#">
                    <Document>
                class C
                {
                    delegate* unmanaged[$$] &lt;int, string&gt; f;
                }
                    </Document>
                </Project>
            </Workspace>
            """;
        await VerifyItemExistsAsync(markup, callingConvention, glyph: (int)Glyph.Keyword);
    }
}