File: System\Windows\Forms\Design\DesignBindingValueUIHandlerTests.cs
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Project: src\src\System.Windows.Forms.Design\tests\UnitTests\System.Windows.Forms.Design.Tests.csproj (System.Windows.Forms.Design.Tests)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.Drawing;
 
namespace System.Windows.Forms.Design.Tests;
 
public class DesignBindingValueUIHandlerTests
{
    private readonly DesignBindingValueUIHandler _handler;
 
    public DesignBindingValueUIHandlerTests()
    {
        _handler = new();
    }
 
    [Fact]
    public void Dispose_DisposesDataBitmap_WhenDataBitmapIsNotNull()
    {
        using Bitmap bitmap = new(10, 10);
        _handler.TestAccessor().Dynamic._dataBitmap = bitmap;
 
        _handler.Dispose();
 
        Action action = () => bitmap.GetPixel(0, 0);
        action.Should().Throw<ArgumentException>();
    }
 
    [Fact]
    public void Dispose_DoesNotThrow_WhenDataBitmapIsNull()
    {
        Action action = _handler.Dispose;
        action.Should().NotThrow();
    }
}