// 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.Test.Utilities;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Recommendations;
 
[Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
public sealed class ForKeywordRecommenderTests : KeywordRecommenderTests
{
    [Fact]
    public async Task TestAtRoot_Interactive()
    {
        await VerifyKeywordAsync(SourceCodeKind.Script,
@"$$");
    }
 
    [Fact]
    public async Task TestAfterClass_Interactive()
    {
        await VerifyKeywordAsync(SourceCodeKind.Script,
            """
            class C { }
            $$
            """);
    }
 
    [Fact]
    public async Task TestAfterGlobalStatement()
    {
        await VerifyKeywordAsync(
            """
            System.Console.WriteLine();
            $$
            """);
    }
 
    [Fact]
    public async Task TestAfterGlobalVariableDeclaration_Interactive()
    {
        await VerifyKeywordAsync(SourceCodeKind.Script,
            """
            int i = 0;
            $$
            """);
    }
 
    [Fact]
    public async Task TestNotInUsingAlias()
    {
        await VerifyAbsenceAsync(
@"using Goo = $$");
    }
 
    [Fact]
    public async Task TestNotInGlobalUsingAlias()
    {
        await VerifyAbsenceAsync(
@"global using Goo = $$");
    }
 
    [Fact]
    public async Task TestEmptyStatement()
    {
        await VerifyKeywordAsync(AddInsideMethod(
@"$$"));
    }
 
    [Fact]
    public async Task TestBeforeStatement()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            $$
            return true;
            """));
    }
 
    [Fact]
    public async Task TestAfterStatement()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            return true;
            $$
            """));
    }
 
    [Fact]
    public async Task TestAfterBlock()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            if (true) {
            }
            $$
            """));
    }
 
    [Fact]
    public async Task TestInsideFor()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            for (;;)
                 $$
            """));
    }
 
    [Fact]
    public async Task TestInsideForInsideFor()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            for (;;)
                 for (;;)
                    $$
            """));
    }
 
    [Fact]
    public async Task TestInsideForBlock()
    {
        await VerifyKeywordAsync(AddInsideMethod(
            """
            for (;;) {
                 $$
            """));
    }
 
    [Fact]
    public async Task TestNotAfterFor1()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"for $$"));
    }
 
    [Fact]
    public async Task TestNotAfterFor2()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"for ($$"));
    }
 
    [Fact]
    public async Task TestNotAfterFor3()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"for (;$$"));
    }
 
    [Fact]
    public async Task TestNotAfterFor4()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"for (;;$$"));
    }
 
    [Fact]
    public async Task TestNotInClass()
    {
        await VerifyAbsenceAsync("""
            class C
            {
              $$
            }
            """);
    }
}