// 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 sealed class CheckedKeywordRecommenderTests : 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 TestInExpression()
    {
        await VerifyKeywordAsync(AddInsideMethod(
@"var q = $$"));
    }
 
    [Fact]
    public async Task TestNotInPreProcessor()
    {
        await VerifyAbsenceAsync(
@"#if a || $$");
    }
 
    [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
    public async Task TestNotInTypeOf()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"typeof($$"));
    }
 
    [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
    public async Task TestNotInDefault()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"default($$"));
    }
 
    [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538804")]
    public async Task TestNotInSizeOf()
    {
        await VerifyAbsenceAsync(AddInsideMethod(
@"sizeof($$"));
    }
 
    [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544219")]
    public async Task TestNotInObjectInitializerMemberContext()
    {
        await VerifyAbsenceAsync("""
            class C
            {
                public int x, y;
                void M()
                {
                    var c = new C { x = 2, y = 3, $$
            """);
    }
 
    [Fact]
    public async Task TestAfterRefExpression()
    {
        await VerifyKeywordAsync(AddInsideMethod(
@"ref int x = ref $$"));
    }
 
    [Fact]
    public async Task TestNotAfterImplicitOperator_01()
    {
        await VerifyAbsenceAsync(
            """
            class Goo {
                public static implicit operator $$
            """);
    }
 
    [Fact]
    public async Task TestNotAfterImplicitOperator_02()
    {
        await VerifyAbsenceAsync(
            """
            class Goo {
                public static implicit operator $$ int (Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_01()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_02()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit /* some comment */ operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_03()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit operator $$ int (Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_01()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_02()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int /* some comment */ operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_03()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int operator $$ -(Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_04()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int operator $$ -(Goo x, Goo y){}
            """);
    }
 
    [Fact]
    public async Task TestNotAfterOperator()
    {
        await VerifyAbsenceAsync(
@"operator $$");
    }
 
    [Fact]
    public async Task TestNotAfterImplicitOperator_ExplicitImplementation_01()
    {
        await VerifyAbsenceAsync(
            """
            class Goo {
                public static implicit I1.operator $$
            """);
    }
 
    [Fact]
    public async Task TestNotAfterImplicitOperator_ExplicitImplementation_02()
    {
        await VerifyAbsenceAsync(
            """
            class Goo {
                public static implicit I1.operator $$ int (Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_ExplicitImplementation_01()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit I1.operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_ExplicitImplementation_02()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit /* some comment */ I1.operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_ExplicitImplementation_03()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit I1. /* some comment */ operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterExplicitOperator_ExplicitImplementation_04()
    {
        await VerifyKeywordAsync(
            """
            class Goo {
                public static explicit I1.operator $$ int (Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_ExplicitImplementation_01()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int I1.operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_ExplicitImplementation_02()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int /* some comment */ I1.operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_ExplicitImplementation_03()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int I1. /* some comment */ operator $$
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_ExplicitImplementation_04()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int I1.operator $$ -(Goo x){}
            """);
    }
 
    [Fact]
    public async Task TestAfterOperator_ExplicitImplementation_05()
    {
        await VerifyKeywordAsync(
            """
            class Goo { 
                public static int I1.operator $$ -(Goo x, Goo y){}
            """);
    }
}