// 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.Drawing2D;
 
namespace System.Drawing.Tests;
 
public class SystemPensTests
{
    public static IEnumerable<object[]> SystemPens_TestData()
    {
        yield return Pen(() => SystemPens.ActiveBorder, SystemColors.ActiveBorder);
        yield return Pen(() => SystemPens.ActiveCaption, SystemColors.ActiveCaption);
        yield return Pen(() => SystemPens.ActiveCaptionText, SystemColors.ActiveCaptionText);
        yield return Pen(() => SystemPens.AppWorkspace, SystemColors.AppWorkspace);
        yield return Pen(() => SystemPens.ButtonFace, SystemColors.ButtonFace);
        yield return Pen(() => SystemPens.ButtonHighlight, SystemColors.ButtonHighlight);
        yield return Pen(() => SystemPens.ButtonShadow, SystemColors.ButtonShadow);
        yield return Pen(() => SystemPens.Control, SystemColors.Control);
        yield return Pen(() => SystemPens.ControlDark, SystemColors.ControlDark);
        yield return Pen(() => SystemPens.ControlDarkDark, SystemColors.ControlDarkDark);
        yield return Pen(() => SystemPens.ControlLight, SystemColors.ControlLight);
        yield return Pen(() => SystemPens.ControlLightLight, SystemColors.ControlLightLight);
        yield return Pen(() => SystemPens.ControlText, SystemColors.ControlText);
        yield return Pen(() => SystemPens.Desktop, SystemColors.Desktop);
        yield return Pen(() => SystemPens.GradientActiveCaption, SystemColors.GradientActiveCaption);
        yield return Pen(() => SystemPens.GradientInactiveCaption, SystemColors.GradientInactiveCaption);
        yield return Pen(() => SystemPens.GrayText, SystemColors.GrayText);
        yield return Pen(() => SystemPens.Highlight, SystemColors.Highlight);
        yield return Pen(() => SystemPens.HighlightText, SystemColors.HighlightText);
        yield return Pen(() => SystemPens.HotTrack, SystemColors.HotTrack);
        yield return Pen(() => SystemPens.InactiveBorder, SystemColors.InactiveBorder);
        yield return Pen(() => SystemPens.InactiveCaption, SystemColors.InactiveCaption);
        yield return Pen(() => SystemPens.InactiveCaptionText, SystemColors.InactiveCaptionText);
        yield return Pen(() => SystemPens.Info, SystemColors.Info);
        yield return Pen(() => SystemPens.InfoText, SystemColors.InfoText);
        yield return Pen(() => SystemPens.Menu, SystemColors.Menu);
        yield return Pen(() => SystemPens.MenuBar, SystemColors.MenuBar);
        yield return Pen(() => SystemPens.MenuHighlight, SystemColors.MenuHighlight);
        yield return Pen(() => SystemPens.MenuText, SystemColors.MenuText);
        yield return Pen(() => SystemPens.ScrollBar, SystemColors.ScrollBar);
        yield return Pen(() => SystemPens.Window, SystemColors.Window);
        yield return Pen(() => SystemPens.WindowFrame, SystemColors.WindowFrame);
        yield return Pen(() => SystemPens.WindowText, SystemColors.WindowText);
    }
 
    public static object[] Pen(Func<Pen> getPen, Color expectedColor) => [getPen, expectedColor];
 
    [Theory]
    [MemberData(nameof(SystemPens_TestData))]
    public void SystemPens_Get_ReturnsExpected(Func<Pen> getPen, Color expectedColor)
    {
        Pen pen = getPen();
        Assert.Equal(expectedColor, pen.Color);
        Assert.Equal(PenType.SolidColor, pen.PenType);
        Assert.Same(pen, getPen());
 
        AssertExtensions.Throws<ArgumentException>(null, pen.Dispose);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.SetLineCap(LineCap.ArrowAnchor, LineCap.Custom, DashCap.Round));
 
        AssertExtensions.Throws<ArgumentException>(null, () => pen.Alignment = PenAlignment.Center);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.Brush = null);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.Color = Color.AliceBlue);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.CompoundArray = null);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.CustomEndCap = null);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.CustomStartCap = null);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.DashCap = DashCap.Flat);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.DashStyle = DashStyle.Custom);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.DashOffset = 10);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.DashPattern = null);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.EndCap = LineCap.RoundAnchor);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.LineJoin = LineJoin.MiterClipped);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.MiterLimit = 10);
        AssertExtensions.Throws<ArgumentException>(null, () => pen.StartCap = LineCap.RoundAnchor);
        using (Matrix matrix = new())
        {
            AssertExtensions.Throws<ArgumentException>(null, () => pen.Transform = matrix);
        }
 
        AssertExtensions.Throws<ArgumentException>(null, () => pen.Width = 10);
    }
 
    [Fact]
    public void FromSystemColor_NotSystemColor_ThrowsArgumentException()
    {
        AssertExtensions.Throws<ArgumentException>(null, () => SystemPens.FromSystemColor(Color.Blue));
    }
}