// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
#nullable enable
 
namespace System.Windows.Forms.Design.Tests;
 
public class CustomMenuItemCollectionTests : IDisposable
{
    private readonly CustomMenuItemCollection _collection;
 
    public CustomMenuItemCollectionTests() => _collection = [];
 
    public void Dispose() => _collection.Clear();
 
    [Fact]
    public void Add_ShouldAddItemToCollection()
    {
        ToolStripMenuItem item = new("TestItem");
 
        int index = _collection.Add(item);
 
        index.Should().Be(0);
        _collection.Count.Should().Be(1);
    }
 
    [Fact]
    public void AddRange_ShouldAddMultipleItemsToCollection()
    {
        ToolStripMenuItem[] items =
        [
            new("Item1"),
            new("Item2")
        ];
 
        _collection.AddRange(items);
        _collection.Count.Should().Be(2);
 
        _collection.RefreshItems();
        _collection.Count.Should().Be(2);
    }
 
    [Fact]
    public void AddRange_EmptyArray_ShouldNotThrowException()
    {
        ToolStripMenuItem[] items = [];
 
        Action action = () => _collection.AddRange(items);
 
        action.Should().NotThrow();
        _collection.Count.Should().Be(0);
    }
 
    [Fact]
    public void Clear_ShouldClearCollection()
    {
        ToolStripMenuItem[] items =
        [
            new("Item1"),
            new("Item2")
        ];
 
        _collection.AddRange(items);
        _collection.Count.Should().Be(2);
 
        _collection.Clear();
        _collection.Count.Should().Be(0);
    }
}