Terminal.Gui/UnitTests/Views/FrameViewTests.cs

using Xunit;
using Xunit.Abstractions;

namespace Terminal.Gui.ViewsTests;
public class FrameViewTests {
	readonly ITestOutputHelper _output;

	public FrameViewTests (ITestOutputHelper output)
	{
		this._output = output;
	}

	[Fact]
	public void Constructors_Defaults ()
	{
		var fv = new FrameView ();
		Assert.Equal (string.Empty, fv.Title);
		Assert.Equal (string.Empty, fv.Text);
		Assert.Equal (LineStyle.Single, fv.BorderStyle);

		fv = new FrameView ("Test");
		Assert.Equal ("Test", fv.Title);
		Assert.Equal (string.Empty, fv.Text);
		Assert.Equal (LineStyle.Single, fv.BorderStyle);

		fv = new FrameView ("Test") { X = 1, Y = 2, Width = 10, Height = 20 };
		Assert.Equal ("Test", fv.Title);
		Assert.Equal (string.Empty, fv.Text);
		fv.BeginInit ();
		fv.EndInit ();
		Assert.Equal (LineStyle.Single, fv.BorderStyle);
		Assert.Equal (new Rect (1, 2, 10, 20), fv.Frame);
	}

	[Fact, AutoInitShutdown]
	public void Draw_Defaults ()
	{
		((FakeDriver)Application.Driver).SetBufferSize (10, 10);
		var fv = new FrameView ();
		Assert.Equal (string.Empty, fv.Title);
		Assert.Equal (string.Empty, fv.Text);
		Application.Top.Add (fv);
		Application.Begin (Application.Top);
		Assert.Equal (new Rect (0, 0, 0, 0), fv.Frame);
		TestHelpers.AssertDriverContentsWithFrameAre (@"", _output);

		fv.Height = 5;
		fv.Width = 5;
		Assert.Equal (new Rect (0, 0, 5, 5), fv.Frame);
		Application.Refresh ();
		TestHelpers.AssertDriverContentsWithFrameAre (@"
┌───┐
│   │
│   │
│   │
└───┘", _output);

		fv.X = 1;
		fv.Y = 2;
		Assert.Equal (new Rect (1, 2, 5, 5), fv.Frame);
		Application.Refresh ();
		TestHelpers.AssertDriverContentsWithFrameAre (@"
 ┌───┐
 │   │
 │   │
 │   │
 └───┘", _output);

		fv.X = -1;
		fv.Y = -2;
		Assert.Equal (new Rect (-1, -2, 5, 5), fv.Frame);
		Application.Refresh ();
		TestHelpers.AssertDriverContentsWithFrameAre (@"
   │
   │
───┘", _output);

		fv.X = 7;
		fv.Y = 8;
		Assert.Equal (new Rect (7, 8, 5, 5), fv.Frame);
		Application.Refresh ();
		TestHelpers.AssertDriverContentsWithFrameAre (@"
       ┌──
       │  ", _output);
	}
}