Terminal.Gui/UnitTests/View/Layout/CoordinateTests.cs

using Xunit;
using Xunit.Abstractions;

namespace Terminal.Gui.ViewTests;

/// <summary>
/// Tests for view coordinate mapping (e.g. <see cref="View.ScreenToFrame"/> etc...).
/// </summary>
public class CoordinateTests {
	readonly ITestOutputHelper _output;

	public CoordinateTests (ITestOutputHelper output) => _output = output;

	/// <summary>
	/// Tests that screen to view mapping works correctly when the view has no superview and there are no Frames on the view.
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, 0, 0)]
	[InlineData (0, 0, 1, 1, 1, 1)]
	[InlineData (0, 0, 9, 9, 9, 9)]
	[InlineData (0, 0, 11, 11, 11, 11)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -1, -1)]
	[InlineData (1, 1, 1, 1, 0, 0)]
	[InlineData (1, 1, 9, 9, 8, 8)]
	[InlineData (1, 1, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToView_NoSuper_NoFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 10,
			Height = 10
		};

		var actual = view.ScreenToFrame (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to view mapping works correctly when the view has no superview and there ARE Frames on the view.
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, 0, 0)]
	[InlineData (0, 0, 1, 1, 1, 1)]
	[InlineData (0, 0, 9, 9, 9, 9)]
	[InlineData (0, 0, 11, 11, 11, 11)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -1, -1)]
	[InlineData (1, 1, 1, 1, 0, 0)]
	[InlineData (1, 1, 9, 9, 8, 8)]
	[InlineData (1, 1, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToView_NoSuper_HasFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 10,
			Height = 10,
			BorderStyle = LineStyle.Single
		};

		var actual = view.ScreenToFrame (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to view mapping works correctly when the view has as superview it does not have Frames
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, 0, 0)]
	[InlineData (0, 0, 1, 1, 1, 1)]
	[InlineData (0, 0, 9, 9, 9, 9)]
	[InlineData (0, 0, 11, 11, 11, 11)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -1, -1)]
	[InlineData (1, 1, 1, 1, 0, 0)]
	[InlineData (1, 1, 9, 9, 8, 8)]
	[InlineData (1, 1, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToView_SuperHasNoFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var super = new View {
			X = 0,
			Y = 0,
			Width = 10,
			Height = 10
		};
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 5,
			Height = 5
		};
		super.Add (view);

		var actual = view.ScreenToFrame (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to view mapping works correctly when the view has as superview it DOES have Frames
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, -1, -1)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (0, 0, 1, 1, 0, 0)]
	[InlineData (0, 0, 9, 9, 8, 8)]
	[InlineData (0, 0, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -2, -2)]
	[InlineData (1, 1, 1, 1, -1, -1)]
	[InlineData (1, 1, 9, 9, 7, 7)]
	[InlineData (1, 1, 11, 11, 9, 9)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToView_SuperHasFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var super = new View {
			X = 0,
			Y = 0,
			Width = 10,
			Height = 10,
			BorderStyle = LineStyle.Single
		};
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 5,
			Height = 5
		};
		super.Add (view);

		var actual = view.ScreenToFrame (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}



	/// <summary>
	/// Tests that screen to bounds mapping works correctly when the view has no superview and there are no Frames on the view.
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, 0, 0)]
	[InlineData (0, 0, 1, 1, 1, 1)]
	[InlineData (0, 0, 9, 9, 9, 9)]
	[InlineData (0, 0, 11, 11, 11, 11)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -1, -1)]
	[InlineData (1, 1, 1, 1, 0, 0)]
	[InlineData (1, 1, 9, 9, 8, 8)]
	[InlineData (1, 1, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToBounds_NoSuper_NoFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 10,
			Height = 10
		};

		var actual = view.ScreenToBounds (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to bounds mapping works correctly when the view has no superview and there ARE Frames on the view.
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, -1, -1)]
	[InlineData (0, 0, 1, 1, 0, 0)]
	[InlineData (0, 0, 9, 9, 8, 8)]
	[InlineData (0, 0, 11, 11, 10, 10)]
	[InlineData (1, 1, 0, 0, -2, -2)]
	[InlineData (1, 1, 1, 1, -1, -1)]
	[InlineData (1, 1, 9, 9, 7, 7)]
	[InlineData (1, 1, 11, 11, 9, 9)]
	public void ScreenToBounds_NoSuper_HasFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 10,
			Height = 10,
			BorderStyle = LineStyle.Single
		};

		var actual = view.ScreenToBounds (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to bounds mapping works correctly when the view has as superview it does not have Frames
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, 0, 0)]
	[InlineData (0, 0, 1, 1, 1, 1)]
	[InlineData (0, 0, 9, 9, 9, 9)]
	[InlineData (0, 0, 11, 11, 11, 11)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -1, -1)]
	[InlineData (1, 1, 1, 1, 0, 0)]
	[InlineData (1, 1, 9, 9, 8, 8)]
	[InlineData (1, 1, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToBounds_SuperHasNoFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var super = new View {
			X = 0,
			Y = 0,
			Width = 10,
			Height = 10
		};
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 5,
			Height = 5
		};
		super.Add (view);

		var actual = view.ScreenToBounds (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}

	/// <summary>
	/// Tests that screen to bounds mapping works correctly when the view has as superview it DOES have Frames
	/// </summary>
	[Theory]
	[InlineData (0, 0, 0, 0, -1, -1)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (0, 0, 1, 1, 0, 0)]
	[InlineData (0, 0, 9, 9, 8, 8)]
	[InlineData (0, 0, 11, 11, 10, 10)] // it's ok for the view to return coordinates outside of its bounds
	[InlineData (1, 1, 0, 0, -2, -2)]
	[InlineData (1, 1, 1, 1, -1, -1)]
	[InlineData (1, 1, 9, 9, 7, 7)]
	[InlineData (1, 1, 11, 11, 9, 9)] // it's ok for the view to return coordinates outside of its bounds
	public void ScreenToBounds_SuperHasFrames (int viewX, int viewY, int x, int y, int expectedX, int expectedY)
	{
		var super = new View {
			X = 0,
			Y = 0,
			Width = 10,
			Height = 10,
			BorderStyle = LineStyle.Single
		};
		var view = new View {
			X = viewX,
			Y = viewY,
			Width = 5,
			Height = 5
		};
		super.Add (view);

		var actual = view.ScreenToFrame (x, y);
		Assert.Equal (expectedX, actual.X);
		Assert.Equal (expectedY, actual.Y);
	}
}