// 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.

using System.Threading.Tasks;
using Microsoft.CodeAnalysis.CSharp.Structure;
using Microsoft.CodeAnalysis.CSharp.Syntax;
using Microsoft.CodeAnalysis.Structure;
using Microsoft.CodeAnalysis.Test.Utilities;
using Xunit;

namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Structure;

[Trait(Traits.Feature, Traits.Features.Outlining)]
public sealed class InitializerExpressionStructureTests : AbstractCSharpSyntaxNodeStructureTests<InitializerExpressionSyntax>
{
    internal override AbstractSyntaxStructureProvider CreateProvider()
        => new InitializerExpressionStructureProvider();

    [Fact]
    public Task TestOuterInitializer()
        => VerifyBlockSpansAsync(
            """
                class C
                {
                    void M()
                    {
                        {|hint:var v = new Dictionary<int, int> {|textspan:$${
                            { 1, 2 },
                            { 1, 2 },
                        }|};|}
                    }
                }
                """,
            Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));

    [Fact]
    public Task TestInnerInitializer()
        => VerifyBlockSpansAsync(
            """
                class C
                {
                    void M()
                    {
                        var v = new Dictionary<int, int>{
                            {|hint:{|textspan:$${
                                1, 2
                            },|}|}
                            { 1, 2 },
                        };
                    }
                }
                """,
            Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));

    [Fact]
    public Task TestOuterInitializerWithMultiLineArgumentList()
        => VerifyBlockSpansAsync(
            """
                class C
                {
                    void M()
                    {
                        {|hint:using var v = new MailMessage(
                            fromAddress,
                            new MailAddress(member.Emails[0].Address))
                        {|textspan:$${
                            Subject = subject,
                            Body = plainBody
                        }|};|}
                    }
                }
                """,
            Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));

    [Fact]
    public Task TestOuterInitializerWithMultiLineArgumentList_BraceOnSameLine()
        => VerifyBlockSpansAsync(
            """
                class C
                {
                    void M()
                    {
                        {|hint:using var mailMessage = new MailMessage(
                            DC.Data.FromEMailAddress,
                            new MailAddress(member.Emails[0].Address)) {|textspan:$${
                            Subject = subject,
                            Body = plainBody
                        }|};|}
                    }
                }
                """,
            Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));
}
