gui-cs.Terminal.Gui/UnitTests/Views/TileViewTests.cs

using System;
using System.ComponentModel;
using System.Linq;
using Xunit;
using Xunit.Abstractions;

namespace Terminal.Gui.ViewsTests
{
    public class TileViewTests
    {
        readonly ITestOutputHelper output;

        public TileViewTests(ITestOutputHelper output)
        {
            this.output = output;
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical()
        {
            var tileView = Get11By3TileView(out var line);

            tileView.Draw();

            string looksLike =
@"
11111│22222
11111│22222
     │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect if it is not focused
            tileView.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_WithBorder()
        {
            var tileView = Get11By3TileView(out var line, true);

            tileView.Draw();

            string looksLike =
@"
┌────┬────┐
│1111│2222│
└────┴────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect if it is not focused
            tileView.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_Focused()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));

            tileView.Draw();

            string looksLike =
@"
11111│22222
11111◊22222
     │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Now while focused move the splitter 1 unit right
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.Draw();

            looksLike =
@"
111111│2222
111111◊2222
      │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // and 2 to the left
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.Draw();

            looksLike =
@"
1111│222222
1111◊222222
    │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_Focused_WithBorder()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));

            tileView.Draw();

            string looksLike =
@"
┌────┬────┐
│1111◊2222│
└────┴────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Now while focused move the splitter 1 unit right
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.Draw();

            looksLike =
@"
┌─────┬───┐
│11111◊222│
└─────┴───┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // and 2 to the left
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.Draw();

            looksLike =
@"
┌───┬─────┐
│111◊22222│
└───┴─────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_Focused_50PercentSplit()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.SetSplitterPos(0, Pos.Percent(50));
            Assert.IsType<Pos.PosFactor>(tileView.SplitterDistances.ElementAt(0));
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));

            tileView.Draw();

            string looksLike =
@"
11111│22222
11111◊22222
     │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Now while focused move the splitter 1 unit right
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.Draw();

            looksLike =
@"
111111│2222
111111◊2222
      │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Even when moving the splitter location it should stay a Percentage based one
            Assert.IsType<Pos.PosFactor>(tileView.SplitterDistances.ElementAt(0));

            // and 2 to the left
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.Draw();

            looksLike =
@"
1111│222222
1111◊222222
    │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
            // Even when moving the splitter location it should stay a Percentage based one
            Assert.IsType<Pos.PosFactor>(tileView.SplitterDistances.ElementAt(0));
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Horizontal()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.Orientation = Orientation.Horizontal;
            tileView.Draw();

            string looksLike =
@"    
11111111111
───────────
22222222222";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect if it is not focused
            var handled = tileView.NewKeyDownEvent(new(KeyCode.CursorDown));
            Assert.False(handled);
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_View1MinSize_Absolute()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));
            tileView.Tiles.ElementAt(0).MinSize = 6;

            // distance is too small (below 6)
            Assert.False(tileView.SetSplitterPos(0, 2));

            // Should stay where it was originally at (50%)
            Assert.Equal(Pos.Percent(50), tileView.SplitterDistances.ElementAt(0));

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
11111│22222
11111◊22222
     │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect because it
            // would take us below the minimum splitter size
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // but we can continue to move the splitter right if we want
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();

            looksLike =
@"
111111│2222
111111◊2222
      │     ";

            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_View1MinSize_Absolute_WithBorder()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));
            tileView.Tiles.ElementAt(0).MinSize = 5;

            // distance is too small (below 5)
            Assert.False(tileView.SetSplitterPos(0, 2));

            // Should stay where it was originally at (50%)
            Assert.Equal(Pos.Percent(50), tileView.SplitterDistances.ElementAt(0));

            tileView.Draw();

            // so should ignore the 2 distance and stick to 5
            string looksLike =
@"
┌────┬────┐
│1111◊2222│
└────┴────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect because it
            // would take us below the minimum splitter size
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // but we can continue to move the splitter right if we want
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();

            looksLike =
@"
┌─────┬───┐
│11111◊222│
└─────┴───┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_View2MinSize_Absolute()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));
            tileView.Tiles.ElementAt(1).MinSize = 6;

            // distance leaves too little space for view2 (less than 6 would remain)
            Assert.False(tileView.SetSplitterPos(0, 8));

            //  Should stay where it was originally at (50%)
            Assert.Equal(Pos.Percent(50), tileView.SplitterDistances.ElementAt(0));

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
11111│22222
11111◊22222
     │     ";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect because it
            // would take us below the minimum splitter size
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // but we can continue to move the splitter left if we want
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.SetNeedsDisplay();
            tileView.Draw();

            looksLike =
@"
1111│222222
1111◊222222
    │    ";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void TestTileView_Vertical_View2MinSize_Absolute_WithBorder()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));
            tileView.Tiles.ElementAt(1).MinSize = 5;

            // distance leaves too little space for view2 (less than 5 would remain)
            Assert.False(tileView.SetSplitterPos(0, 8));

            //  Should stay where it was originally at (50%)
            Assert.Equal(Pos.Percent(50), tileView.SplitterDistances.ElementAt(0));

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
┌────┬────┐
│1111◊2222│
└────┴────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Keyboard movement on splitter should have no effect because it
            // would take us below the minimum splitter size
            line.NewKeyDownEvent(new(KeyCode.CursorRight));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // but we can continue to move the splitter left if we want
            line.NewKeyDownEvent(new(KeyCode.CursorLeft));
            tileView.SetNeedsDisplay();
            tileView.Draw();

            looksLike =
@"
┌───┬─────┐
│111◊22222│
└───┴─────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_InsertPanelAtStart()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.InsertTile(0);

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
┌──┬───┬──┐
│  │111│22│
└──┴───┴──┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_InsertPanelMiddle()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.InsertTile(1);

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
┌──┬───┬──┐
│11│   │22│
└──┴───┴──┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_InsertPanelAtEnd()
        {
            var tileView = Get11By3TileView(out var line, true);
            tileView.InsertTile(2);

            tileView.Draw();

            // so should ignore the 2 distance and stick to 6
            string looksLike =
@"
┌──┬───┬──┐
│11│222│  │
└──┴───┴──┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Horizontal_Focused()
        {
            var tileView = Get11By3TileView(out var line);

            tileView.Orientation = Orientation.Horizontal;
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));

            Assert.True(line.HasFocus);

            tileView.Draw();

            string looksLike =
@"    
11111111111
─────◊─────
22222222222";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Now move splitter line down
            tileView.NewKeyDownEvent(new(KeyCode.CursorDown));

            tileView.Draw();
            looksLike =
@"    
11111111111
11111111111
─────◊─────";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // And 2 up
            line.NewKeyDownEvent(new(KeyCode.CursorUp));
            line.NewKeyDownEvent(new(KeyCode.CursorUp));
            tileView.SetNeedsDisplay();
            tileView.Draw();
            looksLike =
@"    
─────◊─────
22222222222
22222222222";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_Horizontal_View1MinSize_Absolute()
        {
            var tileView = Get11By3TileView(out var line);
            tileView.NewKeyDownEvent(new(tileView.ToggleResizable));

            tileView.Orientation = Orientation.Horizontal;
            tileView.Tiles.ElementAt(0).MinSize = 1;

            // 0 should not be allowed because it brings us below minimum size of View1
            Assert.False(tileView.SetSplitterPos(0, 0));
            // position should remain where it was, at 50%
            Assert.Equal(Pos.Percent(50f), tileView.SplitterDistances.ElementAt(0));

            tileView.Draw();

            string looksLike =
@"    
11111111111
─────◊─────
22222222222";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // Now move splitter line down (allowed
            line.NewKeyDownEvent(new(KeyCode.CursorDown));
            tileView.Draw();
            looksLike =
@"    
11111111111
11111111111
─────◊─────";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // And up 2 (only 1 is allowed because of minimum size of 1 on view1)
            line.NewKeyDownEvent(new(KeyCode.CursorUp));
            line.NewKeyDownEvent(new(KeyCode.CursorUp));

            tileView.SetNeedsDisplay();
            tileView.Draw();
            looksLike =
@"    
11111111111
─────◊─────
22222222222";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestTileView_CannotSetSplitterPosToFuncEtc()
        {
            var tileView = Get11By3TileView();

            var ex = Assert.Throws<ArgumentException>(() => tileView.SetSplitterPos(0, Pos.Right(tileView)));
            Assert.Equal("Only Percent and Absolute values are supported. Passed value was PosView", ex.Message);

            ex = Assert.Throws<ArgumentException>(() => tileView.SetSplitterPos(0, Pos.Function(() => 1)));
            Assert.Equal("Only Percent and Absolute values are supported. Passed value was PosFunc", ex.Message);

            // Also not allowed because this results in a PosCombine
            ex = Assert.Throws<ArgumentException>(() => tileView.SetSplitterPos(0, Pos.Percent(50) - 1));
            Assert.Equal("Only Percent and Absolute values are supported. Passed value was PosCombine", ex.Message);
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer2LeftAnd1Right_RendersNicely()
        {
            var tileView = GetNestedContainer2Left1Right(false);

            Assert.Equal(20, tileView.Frame.Width);
            Assert.Equal(10, tileView.Tiles.ElementAt(0).ContentView.Frame.Width);
            Assert.Equal(9, tileView.Tiles.ElementAt(1).ContentView.Frame.Width);

            Assert.IsType<TileView>(tileView.Tiles.ElementAt(0).ContentView);
            var left = (TileView)tileView.Tiles.ElementAt(0).ContentView;
            Assert.Same(left.SuperView, tileView);

            Assert.Equal(2, left.Tiles.ElementAt(0).ContentView.Subviews.Count);
            Assert.IsType<Label>(left.Tiles.ElementAt(0).ContentView.Subviews[0]);
            Assert.IsType<Label>(left.Tiles.ElementAt(0).ContentView.Subviews[1]);
            var onesTop = (Label)left.Tiles.ElementAt(0).ContentView.Subviews[0];
            var onesBottom = (Label)left.Tiles.ElementAt(0).ContentView.Subviews[1];

            Assert.Same(left.Tiles.ElementAt(0).ContentView, onesTop.SuperView);
            Assert.Same(left.Tiles.ElementAt(0).ContentView, onesBottom.SuperView);

            Assert.Equal(10, onesTop.Frame.Width);
            Assert.Equal(10, onesBottom.Frame.Width);

            tileView.Draw();

            string looksLike =
@"    
1111111111│222222222
1111111111│222222222
          │
          │
          │
──────────┤
          │
          │
          │
          │";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_RendersNicely()
        {
            var tileView = GetNestedContainer3Right1Down(false);

            tileView.Draw();

            string looksLike =
@"
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222├──────
111111│222222│444444
111111│222222│444444
111111│222222│444444
111111│222222│444444
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // It looks good but lets double check the measurements incase
            // anything is sticking out but drawn over

            // 3 panels + 2 splitters
            Assert.Equal(5, tileView.Subviews.Count);

            // Check X and Widths of Tiles
            Assert.Equal(0, tileView.Tiles.ElementAt(0).ContentView.Frame.X);
            Assert.Equal(6, tileView.Tiles.ElementAt(0).ContentView.Frame.Width);

            Assert.Equal(7, tileView.Tiles.ElementAt(1).ContentView.Frame.X);
            Assert.Equal(6, tileView.Tiles.ElementAt(1).ContentView.Frame.Width);

            Assert.Equal(14, tileView.Tiles.ElementAt(2).ContentView.Frame.X);
            Assert.Equal(6, tileView.Tiles.ElementAt(2).ContentView.Frame.Width);

            // Check Y and Heights of Tiles
            Assert.Equal(0, tileView.Tiles.ElementAt(0).ContentView.Frame.Y);
            Assert.Equal(10, tileView.Tiles.ElementAt(0).ContentView.Frame.Height);

            Assert.Equal(0, tileView.Tiles.ElementAt(1).ContentView.Frame.Y);
            Assert.Equal(10, tileView.Tiles.ElementAt(1).ContentView.Frame.Height);

            Assert.Equal(0, tileView.Tiles.ElementAt(2).ContentView.Frame.Y);
            Assert.Equal(10, tileView.Tiles.ElementAt(2).ContentView.Frame.Height);

            // Check Sub containers in last panel
            var subSplit = (TileView)tileView.Tiles.ElementAt(2).ContentView;
            Assert.Equal(0, subSplit.Tiles.ElementAt(0).ContentView.Frame.X);
            Assert.Equal(6, subSplit.Tiles.ElementAt(0).ContentView.Frame.Width);
            Assert.Equal(0, subSplit.Tiles.ElementAt(0).ContentView.Frame.Y);
            Assert.Equal(5, subSplit.Tiles.ElementAt(0).ContentView.Frame.Height);
            Assert.IsType<TextView>(subSplit.Tiles.ElementAt(0).ContentView.Subviews.Single());

            Assert.Equal(0, subSplit.Tiles.ElementAt(1).ContentView.Frame.X);
            Assert.Equal(6, subSplit.Tiles.ElementAt(1).ContentView.Frame.Width);
            Assert.Equal(6, subSplit.Tiles.ElementAt(1).ContentView.Frame.Y);
            Assert.Equal(4, subSplit.Tiles.ElementAt(1).ContentView.Frame.Height);
            Assert.IsType<TextView>(subSplit.Tiles.ElementAt(1).ContentView.Subviews.Single());
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_WithBorder_RendersNicely()
        {
            var tileView = GetNestedContainer3Right1Down(true);

            tileView.Draw();

            string looksLike =
@"
┌─────┬──────┬─────┐
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222├─────┤
│11111│222222│44444│
│11111│222222│44444│
│11111│222222│44444│
└─────┴──────┴─────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // It looks good but lets double check the measurements incase
            // anything is sticking out but drawn over

            // 3 panels + 2 splitters
            Assert.Equal(5, tileView.Subviews.Count);

            // Check X and Widths of Tiles
            Assert.Equal(1, tileView.Tiles.ElementAt(0).ContentView.Frame.X);
            Assert.Equal(5, tileView.Tiles.ElementAt(0).ContentView.Frame.Width);

            Assert.Equal(7, tileView.Tiles.ElementAt(1).ContentView.Frame.X);
            Assert.Equal(6, tileView.Tiles.ElementAt(1).ContentView.Frame.Width);

            Assert.Equal(14, tileView.Tiles.ElementAt(2).ContentView.Frame.X);
            Assert.Equal(5, tileView.Tiles.ElementAt(2).ContentView.Frame.Width);

            // Check Y and Heights of Tiles
            Assert.Equal(1, tileView.Tiles.ElementAt(0).ContentView.Frame.Y);
            Assert.Equal(8, tileView.Tiles.ElementAt(0).ContentView.Frame.Height);

            Assert.Equal(1, tileView.Tiles.ElementAt(1).ContentView.Frame.Y);
            Assert.Equal(8, tileView.Tiles.ElementAt(1).ContentView.Frame.Height);

            Assert.Equal(1, tileView.Tiles.ElementAt(2).ContentView.Frame.Y);
            Assert.Equal(8, tileView.Tiles.ElementAt(2).ContentView.Frame.Height);

            // Check Sub containers in last panel
            var subSplit = (TileView)tileView.Tiles.ElementAt(2).ContentView;
            Assert.Equal(0, subSplit.Tiles.ElementAt(0).ContentView.Frame.X);
            Assert.Equal(5, subSplit.Tiles.ElementAt(0).ContentView.Frame.Width);
            Assert.Equal(0, subSplit.Tiles.ElementAt(0).ContentView.Frame.Y);
            Assert.Equal(4, subSplit.Tiles.ElementAt(0).ContentView.Frame.Height);
            Assert.IsType<TextView>(subSplit.Tiles.ElementAt(0).ContentView.Subviews.Single());

            Assert.Equal(0, subSplit.Tiles.ElementAt(1).ContentView.Frame.X);
            Assert.Equal(5, subSplit.Tiles.ElementAt(1).ContentView.Frame.Width);
            Assert.Equal(5, subSplit.Tiles.ElementAt(1).ContentView.Frame.Y);
            Assert.Equal(3, subSplit.Tiles.ElementAt(1).ContentView.Frame.Height);
            Assert.IsType<TextView>(subSplit.Tiles.ElementAt(1).ContentView.Subviews.Single());
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_WithTitledBorder_RendersNicely()
        {
            var tileView = GetNestedContainer3Right1Down(true, true);

            tileView.Draw();

            string looksLike =
@"
┌ T1 ─┬ T2 ──┬ T3 ─┐
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222├ T4 ─┤
│11111│222222│44444│
│11111│222222│44444│
│11111│222222│44444│
└─────┴──────┴─────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_WithBorder_RemovingTiles()
        {
            var tileView = GetNestedContainer3Right1Down(true);

            tileView.Draw();

            string looksLike =
@"
┌─────┬──────┬─────┐
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222├─────┤
│11111│222222│44444│
│11111│222222│44444│
│11111│222222│44444│
└─────┴──────┴─────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            var toRemove = tileView.Tiles.ElementAt(1);
            var removed = tileView.RemoveTile(1);
            Assert.Same(toRemove, removed);
            Assert.DoesNotContain(removed, tileView.Tiles);

            tileView.Draw();

            looksLike =
@"
┌─────────┬────────┐
│111111111│33333333│
│111111111│33333333│
│111111111│33333333│
│111111111│33333333│
│111111111├────────┤
│111111111│44444444│
│111111111│44444444│
│111111111│44444444│
└─────────┴────────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // cannot remove at this index because there is only one horizontal tile left
            Assert.Null(tileView.RemoveTile(2));
            tileView.RemoveTile(0);


            tileView.Draw();

            looksLike =
@"
┌──────────────────┐
│333333333333333333│
│333333333333333333│
│333333333333333333│
│333333333333333333│
├──────────────────┤
│444444444444444444│
│444444444444444444│
│444444444444444444│
└──────────────────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            Assert.NotNull(tileView.RemoveTile(0));

            tileView.Draw();

            looksLike =
@"
┌──────────────────┐
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
└──────────────────┘";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // cannot remove
            Assert.Null(tileView.RemoveTile(0));
        }

        [Theory, AutoInitShutdown]
        [InlineData(true)]
        [InlineData(false)]
        public void TestTileView_IndexOf(bool recursive)
        {
            var tv = new TileView();
            var lbl1 = new Label();
            var lbl2 = new Label();
            var frame = new FrameView();
            var sub = new Label();
            frame.Add(sub);

            // IndexOf returns -1 when view not found
            Assert.Equal(-1, tv.IndexOf(lbl1, recursive));
            Assert.Equal(-1, tv.IndexOf(lbl2, recursive));

            // IndexOf supports looking for Tile.View
            Assert.Equal(0, tv.IndexOf(tv.Tiles.ElementAt(0).ContentView, recursive));
            Assert.Equal(1, tv.IndexOf(tv.Tiles.ElementAt(1).ContentView, recursive));

            // IndexOf supports looking for Tile.View.Subviews
            tv.Tiles.ElementAt(0).ContentView.Add(lbl1);
            Assert.Equal(0, tv.IndexOf(lbl1, recursive));

            tv.Tiles.ElementAt(1).ContentView.Add(lbl2);
            Assert.Equal(1, tv.IndexOf(lbl2, recursive));

            // IndexOf supports looking deep into subviews only when
            // the recursive true value is passed
            tv.Tiles.ElementAt(1).ContentView.Add(frame);
            if (recursive)
            {
                Assert.Equal(1, tv.IndexOf(sub, recursive));
            }
            else
            {
                Assert.Equal(-1, tv.IndexOf(sub, recursive));
            }
        }

        [Fact, AutoInitShutdown]
        public void TestNestedRoots_BothRoots_BothCanHaveBorders()
        {
            var tv = new TileView
            {
                Width = 10,
                Height = 5,
                ColorScheme = new ColorScheme(),
                LineStyle = LineStyle.Single,
            };
            var tv2 = new TileView
            {
                Width = Dim.Fill(),
                Height = Dim.Fill(),
                ColorScheme = new ColorScheme(),
                LineStyle = LineStyle.Single,
                Orientation = Orientation.Horizontal
            };

            Assert.True(tv.IsRootTileView());
            tv.Tiles.ElementAt(1).ContentView.Add(tv2);

            Application.Top.Add(tv);
            tv.BeginInit();
            tv.EndInit();
            tv.LayoutSubviews();

            tv.LayoutSubviews();
            tv.Tiles.ElementAt(1).ContentView.LayoutSubviews();
            tv2.LayoutSubviews();

            // tv2 is still considered a root because 
            // it was manually created by API user. That
            // means it will not have its lines joined to
            // parents and it is permitted to have a border
            Assert.True(tv2.IsRootTileView());

            tv.Draw();

            var looksLike =
@"
┌────┬───┐
│    │┌─┐│
│    │├─┤│
│    │└─┘│
└────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter1()
        {
            var tv = Get5x1TilesView();

            tv.Tiles.ElementAt(0).MinSize = int.MaxValue;

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 0; x <= 5; x++)
            {
                // All these values would result in tile 0 getting smaller
                // so are not allowed (tile[0] has a min size of Int.Max)
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 6; x < 10; x++)
            {
                // All these values would result in tile 0 getting bigger
                // so are allowed
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 10; x < 100; x++)
            {
                // These values would result in the first splitter moving past
                // the second splitter so are not allowed
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────────┬┬────┬────┬───┐
│11111111││3333│4444│555│
│        ││    │    │   │
└────────┴┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter1_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Tiles.ElementAt(0).MinSize = int.MaxValue;

            tv.Draw();

            var looksLike =
@"
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 0; x <= 5; x++)
            {
                // All these values would result in tile 0 getting smaller
                // so are not allowed (tile[0] has a min size of Int.Max)
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 6; x < 10; x++)
            {
                // All these values would result in tile 0 getting bigger
                // so are allowed
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 10; x < 100; x++)
            {
                // These values would result in the first splitter moving past
                // the second splitter so are not allowed
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
111111111││3333│4444│5555
         ││    │    │
         ││    │    │
         ││    │    │

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter1_CannotCrossBorder()
        {
            var tv = Get5x1TilesView();

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 5; x > 0; x--)
            {
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            Assert.False(tv.SetSplitterPos(0, 0));

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌┬────────┬────┬────┬───┐
││22222222│3333│4444│555│
││        │    │    │   │
└┴────────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 6; x < 10; x++)
            {
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 10; x < 100; x++)
            {
                // These values would result in the first splitter moving past
                // the second splitter so are not allowed
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────────┬┬────┬────┬───┐
│11111111││3333│4444│555│
│        ││    │    │   │
└────────┴┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }
        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter1_CannotCrossBorder_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Draw();

            var looksLike =
@"
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 5; x >= 0; x--)
            {
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
│222222222│3333│4444│5555
│         │    │    │
│         │    │    │
│         │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 6; x < 10; x++)
            {
                Assert.True(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            for (int x = 10; x < 100; x++)
            {
                // These values would result in the first splitter moving past
                // the second splitter so are not allowed
                Assert.False(tv.SetSplitterPos(0, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
111111111││3333│4444│5555
         ││    │    │
         ││    │    │
         ││    │    │

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter2_CannotMoveOverNeighbours()
        {
            var tv = Get5x1TilesView();

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x > 5; x--)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 5; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬┬────────┬────┬───┐
│1111││33333333│4444│555│
│    ││        │    │   │
└────┴┴────────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x < 15; x++)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 15; x < 25; x++)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬────────┬┬────┬───┐
│1111│22222222││4444│555│
│    │        ││    │   │
└────┴────────┴┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter2_CannotMoveOverNeighbours_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Draw();

            var looksLike =
@"
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x > 5; x--)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 5; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
11111││33333333│4444│5555
     ││        │    │
     ││        │    │
     ││        │    │

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x < 15; x++)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 15; x < 25; x++)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
11111│22222222││4444│5555
     │        ││    │
     │        ││    │
     │        ││    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter2()
        {
            var tv = Get5x1TilesView();

            tv.Tiles.ElementAt(1).MinSize = 2;
            tv.Tiles.ElementAt(2).MinSize = 3;

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x > 7; x--)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 7; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬──┬──────┬────┬───┐
│1111│22│333333│4444│555│
│    │  │      │    │   │
└────┴──┴──────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x < 12; x++)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 12; x < 25; x++)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬─────┬───┬────┬───┐
│1111│22222│333│4444│555│
│    │     │   │    │   │
└────┴─────┴───┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter2_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Tiles.ElementAt(1).MinSize = 2;
            tv.Tiles.ElementAt(2).MinSize = 3;

            tv.Draw();

            var looksLike =
@"
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x > 7; x--)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 7; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"

11111│22│333333│4444│5555
     │  │      │    │
     │  │      │    │
     │  │      │    │

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 10; x < 12; x++)
            {
                Assert.True(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            for (int x = 12; x < 25; x++)
            {
                Assert.False(tv.SetSplitterPos(1, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"  
11111│22222│333│4444│5555
     │     │   │    │
     │     │   │    │
     │     │   │    │

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter4_CannotMoveOverNeighbours()
        {
            var tv = Get5x1TilesView();

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x > 15; x--)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 15; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬────┬────┬┬───────┐
│1111│2222│3333││5555555│
│    │    │    ││       │
└────┴────┴────┴┴───────┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x < 24; x++)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 24; x < 100; x++)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬────┬────┬───────┬┐
│1111│2222│3333│4444444││
│    │    │    │       ││
└────┴────┴────┴───────┴┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_NoMinSizes_VerticalSplitters_ResizeSplitter4_CannotMoveOverNeighbours_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Draw();

            var looksLike =
@"   
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x > 15; x--)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 15; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"  
11111│2222│3333││55555555
     │    │    ││
     │    │    ││
     │    │    ││

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x < 25; x++)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 25; x < 100; x++)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
11111│2222│3333│44444444│
     │    │    │        │
     │    │    │        │
     │    │    │        │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter4()
        {
            var tv = Get5x1TilesView();

            tv.Tiles.ElementAt(3).MinSize = 2;
            tv.Tiles.ElementAt(4).MinSize = 1;

            tv.Draw();

            var looksLike =
@"
┌────┬────┬────┬────┬───┐
│1111│2222│3333│4444│555│
│    │    │    │    │   │
└────┴────┴────┴────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x > 17; x--)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 17; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬────┬────┬──┬─────┐
│1111│2222│3333│44│55555│
│    │    │    │  │     │
└────┴────┴────┴──┴─────┘

";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x < 23; x++)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 23; x < 100; x++)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
┌────┬────┬────┬──────┬─┐
│1111│2222│3333│444444│5│
│    │    │    │      │ │
└────┴────┴────┴──────┴─┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void Test5Panel_MinSizes_VerticalSplitters_ResizeSplitter4_NoBorder()
        {
            var tv = Get5x1TilesView(false);

            tv.Tiles.ElementAt(3).MinSize = 2;
            tv.Tiles.ElementAt(4).MinSize = 1;

            tv.Draw();

            var looksLike =
@"
11111│2222│3333│4444│5555
     │    │    │    │
     │    │    │    │
     │    │    │    │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x > 17; x--)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 17; x > 0; x--)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"   
11111│2222│3333│44│555555
     │    │    │  │
     │    │    │  │
     │    │    │  │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

            for (int x = 20; x < 24; x++)
            {
                Assert.True(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            for (int x = 24; x < 100; x++)
            {
                Assert.False(tv.SetSplitterPos(3, x), $"Assert failed for x={x}");
            }

            tv.SetNeedsDisplay();
            tv.Draw();

            looksLike =
@"
11111│2222│3333│4444444│5
     │    │    │       │
     │    │    │       │
     │    │    │       │
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void TestNestedNonRoots_OnlyOneRoot_OnlyRootCanHaveBorders()
        {
            var tv = new TileView
            {
                Width = 10,
                Height = 5,
                ColorScheme = new ColorScheme(),
                LineStyle = LineStyle.Single,
            };

            tv.TrySplitTile(1, 2, out var tv2);
            tv2.ColorScheme = new ColorScheme();
            tv2.LineStyle = LineStyle.Single;
            tv2.Orientation = Orientation.Horizontal;

            Assert.True(tv.IsRootTileView());

            Application.Top.Add(tv);
            tv.BeginInit();
            tv.EndInit();
            tv.LayoutSubviews();

            tv.LayoutSubviews();
            tv.Tiles.ElementAt(1).ContentView.LayoutSubviews();
            tv2.LayoutSubviews();

            // tv2 is not considered a root because 
            // it was created via TrySplitTile so it
            // will have its lines joined to
            // parent and cannot have its own border
            Assert.False(tv2.IsRootTileView());

            tv.Draw();

            var looksLike =
@"
┌────┬───┐
│    │   │
│    ├───┤
│    │   │
└────┴───┘
";
            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }
        [Fact, AutoInitShutdown]
        public void TestTrySplit_ShouldRetainTitle()
        {
            var tv = new TileView();
            tv.Tiles.ElementAt(0).Title = "flibble";
            tv.TrySplitTile(0, 2, out var subTileView);

            // We moved the content so the title should also have been moved
            Assert.Equal("flibble", subTileView.Tiles.ElementAt(0).Title);

            // Secondly we should have cleared the old title (it should have been moved not copied)
            Assert.Empty(tv.Tiles.ElementAt(0).Title);
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_TileVisibility_WithBorder()
        {
            var tileView = GetNestedContainer3Right1Down(true);

            tileView.Draw();

            string looksLike =
@"
┌─────┬──────┬─────┐
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222│33333│
│11111│222222├─────┤
│11111│222222│44444│
│11111│222222│44444│
│11111│222222│44444│
└─────┴──────┴─────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

            tileView.Tiles.ElementAt(0).ContentView.Visible = false;
            tileView.Tiles.ElementAt(1).ContentView.Visible = true;
            tileView.Tiles.ElementAt(2).ContentView.Visible = true;
            tileView.LayoutSubviews();

            tileView.Draw();

            looksLike =
@"
┌────────────┬─────┐
│222222222222│33333│
│222222222222│33333│
│222222222222│33333│
│222222222222│33333│
│222222222222├─────┤
│222222222222│44444│
│222222222222│44444│
│222222222222│44444│
└────────────┴─────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // BUGBUG: v2 - Something broke and I can't figure it out. Disabling for now.
            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = true;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //┌────────────┬─────┐
            //│111111111111│33333│
            //│111111111111│33333│
            //│111111111111│33333│
            //│111111111111│33333│
            //│111111111111├─────┤
            //│111111111111│44444│
            //│111111111111│44444│
            //│111111111111│44444│
            //└────────────┴─────┘";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //┌─────┬────────────┐
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //│11111│222222222222│
            //└─────┴────────────┘";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //┌──────────────────┐
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //│111111111111111111│
            //└──────────────────┘";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //┌──────────────────┐
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //│222222222222222222│
            //└──────────────────┘";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            tileView.Tiles.ElementAt(0).ContentView.Visible = false;
            tileView.Tiles.ElementAt(1).ContentView.Visible = false;
            tileView.Tiles.ElementAt(2).ContentView.Visible = true;
            tileView.LayoutSubviews();

            tileView.Draw();

            looksLike =
@"
┌──────────────────┐
│333333333333333333│
│333333333333333333│
│333333333333333333│
│333333333333333333│
├──────────────────┤
│444444444444444444│
│444444444444444444│
│444444444444444444│
└──────────────────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);


            TestHelpers.AssertDriverContentsAre(looksLike, output);

            tileView.Tiles.ElementAt(0).ContentView.Visible = false;
            tileView.Tiles.ElementAt(1).ContentView.Visible = false;
            tileView.Tiles.ElementAt(2).ContentView.Visible = false;
            tileView.LayoutSubviews();

            tileView.Draw();

            looksLike =
@"
┌──────────────────┐
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
│                  │
└──────────────────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }


        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_TileVisibility_WithoutBorder()
        {
            var tileView = GetNestedContainer3Right1Down(false);
            tileView.Draw();

            string looksLike =
@"
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222│333333
111111│222222├──────
111111│222222│444444
111111│222222│444444
111111│222222│444444
111111│222222│444444";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

            tileView.Tiles.ElementAt(0).ContentView.Visible = false;
            tileView.Tiles.ElementAt(1).ContentView.Visible = true;
            tileView.Tiles.ElementAt(2).ContentView.Visible = true;
            tileView.LayoutSubviews();

            tileView.Draw();

            looksLike =
@"
2222222222222│333333
2222222222222│333333
2222222222222│333333
2222222222222│333333
2222222222222│333333
2222222222222├──────
2222222222222│444444
2222222222222│444444
2222222222222│444444
2222222222222│444444";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

            // BUGBUG: v2 - Something broke and I can't figure it out. Disabling for now.
            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = true;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //1111111111111│333333
            //1111111111111│333333
            //1111111111111│333333
            //1111111111111│333333
            //1111111111111│333333
            //1111111111111├──────
            //1111111111111│444444
            //1111111111111│444444
            //1111111111111│444444
            //1111111111111│444444";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222
            //111111│2222222222222";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111
            //11111111111111111111";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = true;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222
            //22222222222222222222";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = true;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            //33333333333333333333
            //33333333333333333333
            //33333333333333333333
            //33333333333333333333
            //33333333333333333333
            //────────────────────
            //44444444444444444444
            //44444444444444444444
            //44444444444444444444
            //44444444444444444444";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);


            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

            //			tileView.Tiles.ElementAt (0).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (1).ContentView.Visible = false;
            //			tileView.Tiles.ElementAt (2).ContentView.Visible = false;
            //			tileView.LayoutSubviews ();

            //			tileView.Draw ();

            //			looksLike =
            //@"
            // ";

            //			TestHelpers.AssertDriverContentsAre (looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void Test_SplitTop_WholeBottom()
        {
            var tileView = new TileView(2)
            {
                Width = 20,
                Height = 10,
                Orientation = Orientation.Horizontal,
                LineStyle = LineStyle.Single,
            };

            Assert.True(tileView.TrySplitTile(0, 2, out TileView top));

            top.Tiles.ElementAt(0).ContentView.Add(new Label("bleh"));
            top.Tiles.ElementAt(1).ContentView.Add(new Label("blah"));
            top.BeginInit();
            top.EndInit();
            top.LayoutSubviews();

            tileView.Tiles.ElementAt(1).ContentView.Add(new Label("Hello"));
            tileView.ColorScheme = new ColorScheme();
            top.ColorScheme = new ColorScheme();

            tileView.BeginInit();
            tileView.EndInit();
            tileView.LayoutSubviews();

            tileView.Draw();

            string looksLike =
@"
┌─────────┬────────┐
│bleh     │blah    │
│         │        │
│         │        │
│         │        │
├─────────┴────────┤
│Hello             │
│                  │
│                  │
└──────────────────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);

        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_TitleDoesNotOverspill()
        {
            var tileView = GetNestedContainer3Right1Down(true, true, 1);
            tileView.Draw();

            string looksLike =
@"
┌ T1 ─┬ T3 ──┬ T2 ─┐
│11111│333333│22222│
│11111│333333│22222│
│11111│333333│22222│
│11111│333333│22222│
│11111├ T4 ──┤22222│
│11111│444444│22222│
│11111│444444│22222│
│11111│444444│22222│
└─────┴──────┴─────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }

        [Fact, AutoInitShutdown]
        public void TestNestedContainer3RightAnd1Down_TitleTriesToOverspill()
        {
            var tileView = GetNestedContainer3Right1Down(true, true, 1);

            tileView.Tiles.ElementAt(0).Title = new string('x', 100);

            ((TileView)tileView.Tiles.ElementAt(1).ContentView)
                .Tiles.ElementAt(1).Title = new string('y', 100);

            tileView.Draw();

            string looksLike =
@"
┌ xxxx┬ T3 ──┬ T2 ─┐
│11111│333333│22222│
│11111│333333│22222│
│11111│333333│22222│
│11111│333333│22222│
│11111├ yyyyy┤22222│
│11111│444444│22222│
│11111│444444│22222│
│11111│444444│22222│
└─────┴──────┴─────┘";

            TestHelpers.AssertDriverContentsAre(looksLike, output);
        }
        [Fact, AutoInitShutdown]
        public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringRebuildForTileCount()
        {
            var tv = GetTileView(20, 10);

            var myReusableView = new DisposeCounter();

            // I want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Equal(0, myReusableView.DisposalCount);

            // I've changed my mind, I want 3 tiles now
            tv.RebuildForTileCount(3);

            // but I still want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Multiple(
                () => Assert.Equal(0, myReusableView.DisposalCount)
                , () =>
                {
                    tv.Dispose();
                    Assert.Equal(1, myReusableView.DisposalCount);
                });
        }
        [Fact, AutoInitShutdown]
        public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringInsertTile()
        {
            var tv = GetTileView(20, 10);

            var myReusableView = new DisposeCounter();

            // I want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Equal(0, myReusableView.DisposalCount);

            // I've changed my mind, I want 3 tiles now
            tv.InsertTile(0);
            tv.InsertTile(2);

            // but I still want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Multiple(
                () => Assert.Equal(0, myReusableView.DisposalCount)
                , () =>
                {
                    tv.Dispose();
                    Assert.True(myReusableView.DisposalCount >= 1);
                });
        }
        [Theory, AutoInitShutdown]
        [InlineData(0)]
        [InlineData(1)]
        public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringRemoveTile(int idx)
        {
            var tv = GetTileView(20, 10);

            var myReusableView = new DisposeCounter();

            // I want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Equal(0, myReusableView.DisposalCount);

            tv.RemoveTile(idx);

            // but I still want my view in the first tile
            tv.Tiles.ElementAt(0).ContentView.Add(myReusableView);
            Assert.Multiple(
                () => Assert.Equal(0, myReusableView.DisposalCount)
                , () =>
                {
                    tv.Dispose();
                    Assert.True(myReusableView.DisposalCount >= 1);
                });
        }
        private class DisposeCounter : View
        {
            public int DisposalCount;
            protected override void Dispose(bool disposing)
            {
                DisposalCount++;
                base.Dispose(disposing);
            }

        }

        /// <summary>
        /// Creates a vertical orientation root container with left pane split into
        /// two (with horizontal splitter line).
        /// </summary>
        /// <param name="withBorder"></param>
        /// <returns></returns>
        private TileView GetNestedContainer2Left1Right(bool withBorder)
        {
            var container = GetTileView(20, 10, withBorder);
            Assert.True(container.TrySplitTile(0, 2, out var newContainer));

            newContainer.Orientation = Orientation.Horizontal;
            newContainer.ColorScheme = new ColorScheme();
            container.ColorScheme = new ColorScheme();

            container.LayoutSubviews();
            return container;
        }

        /// <summary>
        /// Creates a vertical orientation root container with 3 tiles.
        /// The rightmost is split horizontally
        /// </summary>
        /// <param name="withBorder"></param>
        /// <returns></returns>
        private TileView GetNestedContainer3Right1Down(bool withBorder, bool withTitles = false, int split = 2)
        {
            var container = new TileView(3)
            {
                Width = 20,
                Height = 10
            };
            container.LineStyle = withBorder ? LineStyle.Single : LineStyle.None;

            Assert.True(container.TrySplitTile(split, 2, out var newContainer));

            newContainer.Orientation = Orientation.Horizontal;

            int i = 0;
            foreach (var tile in container.Tiles.Union(newContainer.Tiles))
            {

                if (tile.ContentView is TileView)
                {
                    continue;
                }
                i++;

                if (withTitles)
                {
                    tile.Title = "T" + i;
                }

                tile.ContentView.Add(new TextView
                {
                    Width = Dim.Fill(),
                    Height = Dim.Fill(),
                    Text =
                        string.Join('\n',
                        Enumerable.Repeat(
                            new string(i.ToString()[0], 100)
                            , 10).ToArray()),
                    WordWrap = false
                });
            }

            newContainer.ColorScheme = new ColorScheme();
            container.ColorScheme = new ColorScheme();
            container.BeginInit();
            container.EndInit();
            container.LayoutSubviews();
            return container;
        }

        private LineView GetLine(TileView tileView)
        {
            return tileView.Subviews.OfType<LineView>().Single();
        }

        private TileView Get5x1TilesView(bool border = true)
        {
            var tv = new TileView(5)
            {
                Width = 25,
                Height = 4,
                ColorScheme = new ColorScheme(),
                LineStyle = LineStyle.Single,
            };

            if (!border)
            {

                tv.LineStyle = LineStyle.None;
            }

            tv.Tiles.ElementAt(0).ContentView.Add(new Label(new string('1', 100)) { AutoSize = false, Width = Dim.Fill(), Height = 1 });
            tv.Tiles.ElementAt(1).ContentView.Add(new Label(new string('2', 100)) { AutoSize = false, Width = Dim.Fill(), Height = 1 });
            tv.Tiles.ElementAt(2).ContentView.Add(new Label(new string('3', 100)) { AutoSize = false, Width = Dim.Fill(), Height = 1 });
            tv.Tiles.ElementAt(3).ContentView.Add(new Label(new string('4', 100)) { AutoSize = false, Width = Dim.Fill(), Height = 1 });
            tv.Tiles.ElementAt(4).ContentView.Add(new Label(new string('5', 100)) { AutoSize = false, Width = Dim.Fill(), Height = 1 });

            Application.Top.Add(tv);
            tv.BeginInit();
            tv.EndInit();
            tv.LayoutSubviews();

            return tv;
        }

        private TileView Get11By3TileView(out LineView line, bool withBorder = false)
        {
            var split = Get11By3TileView(withBorder);
            line = GetLine(split);

            return split;
        }
        private TileView Get11By3TileView(bool withBorder = false)
        {
            return GetTileView(11, 3, withBorder);
        }
        private TileView GetTileView(int width, int height, bool withBorder = false)
        {
            var container = new TileView()
            {
                Width = width,
                Height = height,
            };

            container.LineStyle = withBorder ? LineStyle.Single : LineStyle.None;

            container.Tiles.ElementAt(0).ContentView.Add(new Label(new string('1', 100)) { Width = Dim.Fill(), Height = 1, AutoSize = false });
            container.Tiles.ElementAt(0).ContentView.Add(new Label(new string('1', 100)) { Width = Dim.Fill(), Height = 1, AutoSize = false, Y = 1 });
            container.Tiles.ElementAt(1).ContentView.Add(new Label(new string('2', 100)) { Width = Dim.Fill(), Height = 1, AutoSize = false });
            container.Tiles.ElementAt(1).ContentView.Add(new Label(new string('2', 100)) { Width = Dim.Fill(), Height = 1, AutoSize = false, Y = 1 });

            container.Tiles.ElementAt(0).MinSize = 0;
            container.Tiles.ElementAt(1).MinSize = 0;

            Application.Top.Add(container);
            container.ColorScheme = new ColorScheme();
            container.BeginInit();
            container.EndInit();
            container.LayoutSubviews();
            return container;
        }
    }
}