// 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.Collections.Generic;
using Microsoft.CodeAnalysis.ExternalAccess.FSharp.Internal.SignatureHelp;
using Microsoft.CodeAnalysis.ExternalAccess.FSharp.SignatureHelp;
using Microsoft.CodeAnalysis.SignatureHelp;
using Xunit;
 
namespace Microsoft.CodeAnalysis.ExternalAccess.FSharp.UnitTests;
 
public class FSharpSignatureHelpTriggerReasonTests
{
    public static IEnumerable<object[]> enumValues()
    {
        foreach (var number in Enum.GetValues(typeof(SignatureHelpTriggerReason)))
        {
            yield return new object[] { number };
        }
    }
 
    internal static FSharpSignatureHelpTriggerReason GetExpectedTriggerReason(SignatureHelpTriggerReason triggerReason)
    {
        switch (triggerReason)
        {
            case SignatureHelpTriggerReason.InvokeSignatureHelpCommand:
                {
                    return FSharpSignatureHelpTriggerReason.InvokeSignatureHelpCommand;
                }
 
            case SignatureHelpTriggerReason.RetriggerCommand:
                {
                    return FSharpSignatureHelpTriggerReason.RetriggerCommand;
                }
 
            case SignatureHelpTriggerReason.TypeCharCommand:
                {
                    return FSharpSignatureHelpTriggerReason.TypeCharCommand;
                }
 
            default:
                {
                    throw ExceptionUtilities.UnexpectedValue(triggerReason);
                }
        }
    }
 
    [Theory]
    [MemberData(nameof(enumValues))]
    internal void MapsCorrectly(SignatureHelpTriggerReason triggerReason)
    {
        var actual = FSharpSignatureHelpTriggerReasonHelpers.ConvertFrom(triggerReason);
        var expected = GetExpectedTriggerReason(triggerReason);
        Assert.Equal(expected, actual);
    }
}