// 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.CodeFixes;
using Microsoft.CodeAnalysis.CSharp.CodeFixes.HideBase;
using Microsoft.CodeAnalysis.Diagnostics;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
using Xunit.Abstractions;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Diagnostics.HideBase
{
    [Trait(Traits.Feature, Traits.Features.CodeActionsAddNew)]
    public class HideBaseTests : AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest
    {
        public HideBaseTests(ITestOutputHelper logger)
           : base(logger)
        {
        }
 
        internal override (DiagnosticAnalyzer?, CodeFixProvider) CreateDiagnosticProviderAndFixer(Workspace workspace)
            => (null, new HideBaseCodeFixProvider());
 
        [Fact]
        public async Task TestAddNewToProperty()
        {
            await TestInRegularAndScriptAsync(
                """
                class Application
                {
                    public static Application Current { get; }
                }
 
                class App : Application
                {
                    [|public static App Current|] { get; set; }
                }
                """,
                """
                class Application
                {
                    public static Application Current { get; }
                }
 
                class App : Application
                {
                    public static new App Current { get; set; }
                }
                """);
        }
 
        [Fact]
        public async Task TestAddNewToMethod()
        {
            await TestInRegularAndScriptAsync(
                """
                class Application
                {
                    public static void Method()
                    {
                    }
                }
 
                class App : Application
                {
                    [|public static void Method()
                    {
                    }|]
                }
                """,
                """
                class Application
                {
                    public static void Method()
                    {
                    }
                }
 
                class App : Application
                {
                    public static new void Method()
                    {
                    }
                }
                """);
        }
 
        [Fact]
        public async Task TestAddNewToField()
        {
            await TestInRegularAndScriptAsync(
                """
                class Application
                {
                    public string Test;
                }
 
                class App : Application
                {
                    [|public int Test;|]
                }
                """,
                """
                class Application
                {
                    public string Test;
                }
 
                class App : Application
                {
                    public new int Test;
                }
                """);
        }
 
        [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/18391")]
        public async Task TestAddNewToConstant()
        {
            await TestInRegularAndScriptAsync(
                """
                class Application
                {
                    public const int Test = 1;
                }
 
                class App : Application
                {
                    [|public const int Test = Application.Test + 1;|]
                }
                """,
                """
                class Application
                {
                    public const int Test = 1;
                }
 
                class App : Application
                {
                    public new const int Test = Application.Test + 1;
                }
                """);
        }
 
        [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/14455")]
        public async Task TestAddNewToConstantInternalFields()
        {
            await TestInRegularAndScriptAsync(
                """
                class A { internal const int i = 0; }
                class B : A { [|internal const int i = 1;|] }
                """,
                """
                class A { internal const int i = 0; }
                class B : A { internal new const int i = 1; }
                """);
        }
 
        [Fact]
        public async Task TestAddNewToDisorderedModifiers() =>
            await TestInRegularAndScript1Async(
                """
                class Application
                {
                    public static string Test;
                }
 
                class App : Application
                {
                    [|static public int Test;|]
                }
                """,
                """
                class Application
                {
                    public static string Test;
                }
 
                class App : Application
                {
                    static public new int Test;
                }
                """);
 
        [Fact]
        public async Task TestAddNewToOrderedModifiersWithTrivia() =>
            await TestInRegularAndScript1Async(
                """
                class Application
                {
                    public string Test;
                }
 
                class App : Application
                {
                    [|/* start */ public /* middle */ readonly /* end */ int Test;|]
                }
                """,
                """
                class Application
                {
                    public string Test;
                }
 
                class App : Application
                {
                    /* start */ public /* middle */ new readonly /* end */ int Test;
                }
                """);
    }
}