// 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 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_Interactive()
        {
            await VerifyKeywordAsync(SourceCodeKind.Script,
                """
                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
                {
                  $$
                }
                """);
        }
    }
}