Terminal.Gui/Tests/UnitTestsParallelizable/View/Adornment/MarginTests.cs

using UnitTests;
using Xunit.Abstractions;

namespace UnitTests_Parallelizable.ViewTests;

public class MarginTests
{
    [Fact]
    public void Is_Visually_Transparent ()
    {
        var view = new View { Height = 3, Width = 3 };
        Assert.True(view.Margin!.ViewportSettings.HasFlag(ViewportSettingsFlags.Transparent), "Margin should be transparent by default.");
    }

    [Fact]
    public void Is_Transparent_To_Mouse ()
    {
        var view = new View { Height = 3, Width = 3 };
        Assert.True (view.Margin!.ViewportSettings.HasFlag (ViewportSettingsFlags.TransparentMouse), "Margin should be transparent to mouse by default.");
    }

    [Fact]
    public void When_Not_Visually_Transparent ()
    {
        var view = new View { Height = 3, Width = 3 };

        // Give the Margin some size
        view.Margin!.Thickness = new Thickness (1, 1, 1, 1);

        // Give it Text
        view.Margin.Text = "Test";

        // Strip off ViewportSettings.Transparent
        view.Margin!.ViewportSettings &= ~ViewportSettingsFlags.Transparent;

        // 

    }

    [Fact]
    public void Thickness_Is_Empty_By_Default ()
    {
        var view = new View { Height = 3, Width = 3 };
        Assert.Equal (Thickness.Empty, view.Margin!.Thickness);
    }

    // ShadowStyle
    [Fact]
    public void Margin_Uses_ShadowStyle_Transparent ()
    {
        var view = new View { Height = 3, Width = 3, ShadowStyle = ShadowStyle.Transparent };
        Assert.Equal (ShadowStyle.Transparent, view.Margin!.ShadowStyle);
        Assert.True (view.Margin.ViewportSettings.HasFlag (ViewportSettingsFlags.TransparentMouse), "Margin should be transparent to mouse when ShadowStyle is Transparent.");
        Assert.True (view.Margin!.ViewportSettings.HasFlag (ViewportSettingsFlags.Transparent), "Margin should be transparent when ShadowStyle is Transparent..");
    }

    [Fact]
    public void Margin_Uses_ShadowStyle_Opaque ()
    {
        var view = new View { Height = 3, Width = 3, ShadowStyle = ShadowStyle.Opaque };
        Assert.Equal (ShadowStyle.Opaque, view.Margin!.ShadowStyle);
        Assert.True (view.Margin.ViewportSettings.HasFlag (ViewportSettingsFlags.TransparentMouse), "Margin should be transparent to mouse when ShadowStyle is Opaque.");
        Assert.True (view.Margin!.ViewportSettings.HasFlag (ViewportSettingsFlags.Transparent), "Margin should be transparent when ShadowStyle is Opaque..");
    }

}