// 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 Roslyn.Test.Utilities;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Recommendations
{
    [Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
    public class NullableKeywordRecommenderTests : KeywordRecommenderTests
    {
        [Fact]
        public async Task TestNotAtRoot_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
@"$$");
        }
 
        [Fact]
        public async Task TestNotAfterClass_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
                """
                class C { }
                $$
                """);
        }
 
        [Fact]
        public async Task TestNotAfterGlobalStatement_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
                """
                System.Console.WriteLine();
                $$
                """);
        }
 
        [Fact]
        public async Task TestNotAfterGlobalVariableDeclaration_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
                """
                int i = 0;
                $$
                """);
        }
 
        [Fact]
        public async Task TestNotInUsingAlias()
        {
            await VerifyAbsenceAsync(
@"using Goo = $$");
        }
 
        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotInGlobalUsingAlias()
        {
            await VerifyAbsenceAsync(
@"global using Goo = $$");
        }
 
        [Fact]
        public async Task TestNotInEmptyStatement()
        {
            await VerifyAbsenceAsync(AddInsideMethod(
@"$$"));
        }
 
        [Fact]
        public async Task TestAfterHash()
        {
            await VerifyKeywordAsync(
@"#$$");
        }
 
        [Fact]
        public async Task TestAfterHashAndSpace()
        {
            await VerifyKeywordAsync(
@"# $$");
        }
 
        [Fact]
        public async Task TestNotAfterHashAndNullable()
        {
            await VerifyAbsenceAsync(
@"#nullable $$");
        }
 
        [Fact]
        public async Task TestNotAfterPragma()
            => await VerifyAbsenceAsync(@"#pragma $$");
 
        [Fact]
        public async Task TestNotAfterPragmaWarning()
            => await VerifyAbsenceAsync(@"#pragma warning $$");
 
        [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/63594")]
        public async Task TestNotAfterPragmaWarningDisable()
            => await VerifyAbsenceAsync(@"#pragma warning disable $$");
 
        [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/63594")]
        public async Task TestNotAfterPragmaWarningEnable()
            => await VerifyAbsenceAsync(@"#pragma warning enable $$");
 
        [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/63594")]
        public async Task TestNotAfterPragmaWarningRestore()
            => await VerifyAbsenceAsync(@"#pragma warning restore $$");
 
        [Fact]
        public async Task TestNotAfterPragmaWarningSafeOnly()
            => await VerifyAbsenceAsync(@"#pragma warning safeonly $$");
 
        [Fact]
        public async Task TestNotAfterPragmaWarningSafeOnlyNullable()
            => await VerifyAbsenceAsync(@"#pragma warning safeonly nullable $$");
 
        [Fact]
        public async Task TestNotAfterPragmaWarningRestoreNullable()
            => await VerifyAbsenceAsync(@"#pragma warning restore nullable, $$");
 
        [Fact]
        public async Task TestNotAfterPragmaWarningDisableId()
            => await VerifyAbsenceAsync(@"#pragma warning disable 114, $$");
    }
}