﻿// 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
{
    public class UndefKeywordRecommenderTests : KeywordRecommenderTests
    {
        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotAtRoot_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
@"$$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotAfterClass_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
@"class C { }
$$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotAfterGlobalStatement_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
@"System.Console.WriteLine();
$$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotAfterGlobalVariableDeclaration_Interactive()
        {
            await VerifyAbsenceAsync(SourceCodeKind.Script,
@"int i = 0;
$$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotInUsingAlias()
        {
            await VerifyAbsenceAsync(
@"using Goo = $$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotInEmptyStatement()
        {
            await VerifyAbsenceAsync(AddInsideMethod(
@"$$"));
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestAfterHash()
        {
            await VerifyKeywordAsync(
@"#$$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestAfterHashAndSpace()
        {
            await VerifyKeywordAsync(
@"# $$");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNestedPreprocessor()
        {
            await VerifyKeywordAsync(
@"#if true
    #$$
#endif");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestBeforeUsing()
        {
            await VerifyKeywordAsync(
@"#$$
using System;");
        }

        [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
        public async Task TestNotAfterUsing()
        {
            await VerifyAbsenceAsync(
@"using System;
#$$");
        }
    }
}
