// 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 System.Threading.Tasks;
using Xunit;
 
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.SplitOrMergeIfStatements;
 
public sealed partial class MergeConsecutiveIfStatementsTests
{
    [Fact]
    public async Task MergedIntoStatementOnMiddleIfMergableWithNextOnly()
    {
        const string Initial =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a)
            return;
        else
            return;
        [||]if (b)
            return;
        if (c)
            return;
    }
}";
        const string Expected =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a)
            return;
        else
            return;
        if (b || c)
            return;
    }
}";
 
        await TestActionCountAsync(Initial, 1);
        await TestInRegularAndScriptAsync(Initial, Expected);
    }
 
    [Fact]
    public async Task MergedIntoStatementOnMiddleIfMergableWithPreviousOnly()
    {
        const string Initial =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a)
            return;
        [||]if (b)
            return;
        else
            return;
        if (c)
            return;
    }
}";
        const string Expected =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a || b)
            return;
        else
            return;
        if (c)
            return;
    }
}";
 
        await TestActionCountAsync(Initial, 1);
        await TestInRegularAndScriptAsync(Initial, Expected);
    }
 
    [Fact]
    public async Task MergedIntoStatementOnMiddleIfMergableWithBoth()
    {
        const string Initial =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a)
            return;
        [||]if (b)
            return;
        if (c)
            return;
    }
}";
        const string Expected1 =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a || b)
            return;
        if (c)
            return;
    }
}";
        const string Expected2 =
@"class C
{
    void M(bool a, bool b, bool c)
    {
        if (a)
            return;
        if (b || c)
            return;
    }
}";
 
        await TestActionCountAsync(Initial, 2);
        await TestInRegularAndScriptAsync(Initial, Expected1, index: 0);
        await TestInRegularAndScriptAsync(Initial, Expected2, index: 1);
    }
}