// 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.
 
#nullable disable
 
using Microsoft.CodeAnalysis.EditAndContinue;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
 
namespace Microsoft.CodeAnalysis.CSharp.EditAndContinue.UnitTests;
 
[UseExportProvider]
public sealed class TrackingSpanTests : EditingTestBase
{
    [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/846042")]
    public void MovedOutsideOfMethod1()
    {
        var src1 = """
            class C
            {
                static void F()
                {
                    <AS:0>Goo(1);</AS:0>
                }
            }
            """;
        var src2 = """
            class C
            {
                static void F()
                {
                <AS:0>}</AS:0>
 
                static void Goo()
                {
                    // tracking span moves to another method as the user types around it
                    <TS:0>Goo(1);</TS:0>
                }
            }
            """;
        var edits = GetTopEdits(src1, src2);
        var active = GetActiveStatements(src1, src2);
 
        edits.VerifySemanticDiagnostics(
            active,
            capabilities: EditAndContinueCapabilities.AddMethodToExistingType);
    }
 
    [Fact]
    public void MovedOutsideOfMethod2()
    {
        var src1 = """
            class C
            {
                static void F()
                {
                    <AS:0>Goo(1);</AS:0>
                }
            }
            """;
        var src2 = """
            class C
            {
                static void F()
                {
                    <AS:0>Goo(1);</AS:0>
                }
 
                static void Goo()
                {
                    <TS:0>Goo(2);</TS:0>
                }
            }
            """;
        var edits = GetTopEdits(src1, src2);
        var active = GetActiveStatements(src1, src2);
 
        edits.VerifySemanticDiagnostics(
            active,
            capabilities: EditAndContinueCapabilities.AddMethodToExistingType);
    }
 
    [Fact]
    public void MovedOutsideOfLambda1()
    {
        var src1 = """
            class C
            {
                static void F()
                {
                    Action a = () => { <AS:0>Goo(1);</AS:0> };
                }
            }
            """;
        var src2 = """
            class C
            {
                static void F()
                {
                    Action a = () => { <AS:0>}</AS:0>;
                    <TS:0>Goo(1);</TS:0>
                }
            }
            """;
        var edits = GetTopEdits(src1, src2);
        var active = GetActiveStatements(src1, src2);
 
        edits.VerifySemanticDiagnostics(active);
    }
 
    [Fact]
    public void MovedOutsideOfLambda2()
    {
        var src1 = """
            class C
            {
                static void F()
                {
                    Action a = () => { <AS:0>Goo(1);</AS:0> };
                    Action b = () => { Goo(2); };
                }
            }
            """;
        var src2 = """
            class C
            {
                static void F()
                {
                    Action a = () => { <AS:0>Goo(1);</AS:0> };
                    Action b = () => { <TS:0>Goo(2);</TS:0> };
                }
            }
            """;
        var edits = GetTopEdits(src1, src2);
        var active = GetActiveStatements(src1, src2);
 
        edits.VerifySemanticDiagnostics(active);
    }
}