// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms.Layout;
using Moq;
using Point = System.Drawing.Point;
using Size = System.Drawing.Size;

namespace System.Windows.Forms.Tests;

public class TableLayoutPanelTests
{
    [WinFormsFact]
    public void TableLayoutPanel_Ctor_Default()
    {
        using SubTableLayoutPanel control = new();
        Assert.Null(control.AccessibleDefaultActionDescription);
        Assert.Null(control.AccessibleDescription);
        Assert.Null(control.AccessibleName);
        Assert.Equal(AccessibleRole.Default, control.AccessibleRole);
        Assert.False(control.AllowDrop);
        Assert.Equal(AnchorStyles.Top | AnchorStyles.Left, control.Anchor);
        Assert.False(control.AutoScroll);
        Assert.Equal(Size.Empty, control.AutoScrollMargin);
        Assert.Equal(Size.Empty, control.AutoScrollMinSize);
        Assert.Equal(Point.Empty, control.AutoScrollPosition);
        Assert.False(control.AutoSize);
        Assert.Equal(AutoSizeMode.GrowOnly, control.AutoSizeMode);
        Assert.Equal(Control.DefaultBackColor, control.BackColor);
        Assert.Null(control.BackgroundImage);
        Assert.Equal(ImageLayout.Tile, control.BackgroundImageLayout);
        Assert.Null(control.BindingContext);
        Assert.Equal(BorderStyle.None, control.BorderStyle);
        Assert.Equal(100, control.Bottom);
        Assert.Equal(new Rectangle(0, 0, 200, 100), control.Bounds);
        Assert.True(control.CanEnableIme);
        Assert.False(control.CanFocus);
        Assert.True(control.CanRaiseEvents);
        Assert.False(control.CanSelect);
        Assert.False(control.Capture);
        Assert.True(control.CausesValidation);
        Assert.Equal(TableLayoutPanelCellBorderStyle.None, control.CellBorderStyle);
        Assert.Equal(new Rectangle(0, 0, 200, 100), control.ClientRectangle);
        Assert.Equal(new Size(200, 100), control.ClientSize);
        Assert.Equal(0, control.ColumnCount);
        Assert.Empty(control.ColumnStyles);
        Assert.Same(control.LayoutSettings.ColumnStyles, control.ColumnStyles);
        Assert.Null(control.Container);
        Assert.False(control.ContainsFocus);
        Assert.Null(control.ContextMenuStrip);
        Assert.Empty(control.Controls);
        Assert.Same(control.Controls, control.Controls);
        Assert.False(control.Created);
        Assert.Equal(Cursors.Default, control.Cursor);
        Assert.Equal(Cursors.Default, control.DefaultCursor);
        Assert.Equal(ImeMode.Inherit, control.DefaultImeMode);
        Assert.Equal(new Padding(3), control.DefaultMargin);
        Assert.Equal(Size.Empty, control.DefaultMaximumSize);
        Assert.Equal(Size.Empty, control.DefaultMinimumSize);
        Assert.Equal(Padding.Empty, control.DefaultPadding);
        Assert.Equal(new Size(200, 100), control.DefaultSize);
        Assert.False(control.DesignMode);
        Assert.Equal(new Rectangle(0, 0, 200, 100), control.DisplayRectangle);
        Assert.Equal(DockStyle.None, control.Dock);
        Assert.NotNull(control.DockPadding);
        Assert.Same(control.DockPadding, control.DockPadding);
        Assert.Equal(0, control.DockPadding.Top);
        Assert.Equal(0, control.DockPadding.Bottom);
        Assert.Equal(0, control.DockPadding.Left);
        Assert.Equal(0, control.DockPadding.Right);
        Assert.False(control.DoubleBuffered);
        Assert.True(control.Enabled);
        Assert.NotNull(control.Events);
        Assert.Same(control.Events, control.Events);
        Assert.False(control.Focused);
        Assert.Equal(Control.DefaultFont, control.Font);
        Assert.Equal(control.Font.Height, control.FontHeight);
        Assert.Equal(Control.DefaultForeColor, control.ForeColor);
        Assert.Equal(TableLayoutPanelGrowStyle.AddRows, control.GrowStyle);
        Assert.False(control.HasChildren);
        Assert.Equal(100, control.Height);
        Assert.NotNull(control.HorizontalScroll);
        Assert.Same(control.HorizontalScroll, control.HorizontalScroll);
        Assert.False(control.HScroll);
        Assert.Equal(ImeMode.NoControl, control.ImeMode);
        Assert.Equal(ImeMode.NoControl, control.ImeModeBase);
        Assert.False(control.IsAccessible);
        Assert.False(control.IsMirrored);
        Assert.NotNull(control.LayoutEngine);
        Assert.Same(control.LayoutEngine, control.LayoutEngine);
        Assert.NotNull(control.LayoutSettings);
        Assert.Same(control.LayoutSettings, control.LayoutSettings);
        Assert.Equal(0, control.Left);
        Assert.Equal(Point.Empty, control.Location);
        Assert.Equal(new Padding(3), control.Margin);
        Assert.Equal(Size.Empty, control.MaximumSize);
        Assert.Equal(Size.Empty, control.MinimumSize);
        Assert.Equal(Padding.Empty, control.Padding);
        Assert.Null(control.Parent);
        Assert.Equal(Size.Empty, control.PreferredSize);
        Assert.Equal("Microsoft\u00AE .NET", control.ProductName);
        Assert.False(control.RecreatingHandle);
        Assert.Null(control.Region);
        Assert.False(control.ResizeRedraw);
        Assert.Equal(200, control.Right);
        Assert.Equal(RightToLeft.No, control.RightToLeft);
        Assert.Equal(0, control.RowCount);
        Assert.Empty(control.RowStyles);
        Assert.Same(control.LayoutSettings.RowStyles, control.RowStyles);
        Assert.True(control.ShowFocusCues);
        Assert.True(control.ShowKeyboardCues);
        Assert.Equal(new Size(200, 100), control.Size);
        Assert.Equal(0, control.TabIndex);
        Assert.False(control.TabStop);
        Assert.Empty(control.Text);
        Assert.Equal(0, control.Top);
        Assert.Null(control.TopLevelControl);
        Assert.False(control.UseWaitCursor);
        Assert.True(control.Visible);
        Assert.NotNull(control.VerticalScroll);
        Assert.Same(control.VerticalScroll, control.VerticalScroll);
        Assert.False(control.VScroll);
        Assert.Equal(200, control.Width);

        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_CreateParams_GetDefault_ReturnsExpected()
    {
        using SubTableLayoutPanel control = new();
        CreateParams createParams = control.CreateParams;
        Assert.Null(createParams.Caption);
        Assert.Null(createParams.ClassName);
        Assert.Equal(0x8, createParams.ClassStyle);
        Assert.Equal(0x10000, createParams.ExStyle);
        Assert.Equal(100, createParams.Height);
        Assert.Equal(IntPtr.Zero, createParams.Parent);
        Assert.Null(createParams.Param);
        Assert.Equal(0x56000000, createParams.Style);
        Assert.Equal(200, createParams.Width);
        Assert.Equal(0, createParams.X);
        Assert.Equal(0, createParams.Y);
        Assert.Same(createParams, control.CreateParams);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [EnumData<BorderStyle>]
    public void TableLayoutPanel_BorderStyle_Set_GetReturnsExpected(BorderStyle value)
    {
        using TableLayoutPanel control = new()
        {
            BorderStyle = value
        };
        Assert.Equal(value, control.BorderStyle);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.BorderStyle = value;
        Assert.Equal(value, control.BorderStyle);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(BorderStyle.Fixed3D, 1)]
    [InlineData(BorderStyle.FixedSingle, 1)]
    [InlineData(BorderStyle.None, 0)]
    public void TableLayoutPanel_BorderStyle_SetWithHandle_GetReturnsExpected(BorderStyle value, int expectedInvalidatedCallCount)
    {
        using TableLayoutPanel control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;

        control.BorderStyle = value;
        Assert.Equal(value, control.BorderStyle);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount * 2, invalidatedCallCount);
        Assert.Equal(expectedInvalidatedCallCount, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set same.
        control.BorderStyle = value;
        Assert.Equal(value, control.BorderStyle);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedInvalidatedCallCount * 2, invalidatedCallCount);
        Assert.Equal(expectedInvalidatedCallCount, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InvalidEnumData<BorderStyle>]
    public void TableLayoutPanel_BorderStyle_SetInvalid_ThrowsInvalidEnumArgumentException(BorderStyle value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<InvalidEnumArgumentException>("value", () => control.BorderStyle = value);
    }

    public static IEnumerable<object[]> CellBorderStyle_Set_TestData()
    {
        foreach (bool resizeRedraw in new bool[] { true, false })
        {
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.Inset, true, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.InsetDouble, true, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.None, resizeRedraw, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.Outset, true, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.OutsetDouble, true, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.OutsetPartial, true, 1 };
            yield return new object[] { resizeRedraw, TableLayoutPanelCellBorderStyle.Single, true, 1 };
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(CellBorderStyle_Set_TestData))]
    public void TableLayoutPanel_CellBorderStyle_Set_GetReturnsExpected(bool resizeRedraw, TableLayoutPanelCellBorderStyle value, bool expectedResizeRedraw, int expectedLayoutCallCount)
    {
        using SubTableLayoutPanel control = new();
        control.SetStyle(ControlStyles.ResizeRedraw, resizeRedraw);
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("CellBorderStyle", e.AffectedProperty);
            layoutCallCount++;
        };

        control.CellBorderStyle = value;
        Assert.Equal(value, control.CellBorderStyle);
        Assert.Equal(expectedResizeRedraw, control.GetStyle(ControlStyles.ResizeRedraw));
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.CellBorderStyle = value;
        Assert.Equal(value, control.CellBorderStyle);
        Assert.Equal(expectedResizeRedraw, control.GetStyle(ControlStyles.ResizeRedraw));
        Assert.Equal(expectedLayoutCallCount * 2, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [MemberData(nameof(CellBorderStyle_Set_TestData))]
    public void TableLayoutPanel_CellBorderStyle_SetWithHandle_GetReturnsExpected(bool resizeRedraw, TableLayoutPanelCellBorderStyle value, bool expectedResizeRedraw, int expectedLayoutCallCount)
    {
        using SubTableLayoutPanel control = new();
        control.SetStyle(ControlStyles.ResizeRedraw, resizeRedraw);
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("CellBorderStyle", e.AffectedProperty);
            layoutCallCount++;
        };

        control.CellBorderStyle = value;
        Assert.Equal(value, control.CellBorderStyle);
        Assert.Equal(expectedResizeRedraw, control.GetStyle(ControlStyles.ResizeRedraw));
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedLayoutCallCount * 2, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Set same.
        control.CellBorderStyle = value;
        Assert.Equal(value, control.CellBorderStyle);
        Assert.Equal(expectedResizeRedraw, control.GetStyle(ControlStyles.ResizeRedraw));
        Assert.Equal(expectedLayoutCallCount * 2, layoutCallCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(expectedLayoutCallCount * 4, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsTheory]
    [InvalidEnumData<TableLayoutPanelCellBorderStyle>]
    public void TableLayoutPanel_CellBorderStyle_SetInvalid_ThrowsArgumentOutOfRangeException(TableLayoutPanelCellBorderStyle value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<InvalidEnumArgumentException>("value", () => control.CellBorderStyle = value);
    }

    [WinFormsTheory]
    [InlineData(0, 1)]
    [InlineData(1, 1)]
    public void TableLayoutPanel_ColumnCount_Set_GetReturnsExpected(int value, int expectedLayoutCallCount)
    {
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("Columns", e.AffectedProperty);
            layoutCallCount++;
        };

        control.ColumnCount = value;
        Assert.Equal(value, control.ColumnCount);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.ColumnCount = value;
        Assert.Equal(value, control.ColumnCount);
        Assert.Equal(expectedLayoutCallCount + 1, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_ColumnCount_SetNegative_ThrowsArgumentOutOfRangeException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("value", () => control.ColumnCount = -1);
    }

    [WinFormsFact]
    public void TableLayoutPanel_Controls_ResetValue_Success()
    {
        PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(TableLayoutPanel))[nameof(Control.Controls)];
        using TableLayoutPanel control = new();
        Assert.False(property.CanResetValue(control));

        Assert.Empty(control.Controls);
        Assert.False(property.CanResetValue(control));

        using Control child = new();
        control.Controls.Add(child);
        Assert.Same(child, Assert.Single(control.Controls));
        Assert.False(property.CanResetValue(control));

        property.ResetValue(control);
        Assert.Same(child, Assert.Single(control.Controls));
        Assert.False(property.CanResetValue(control));
    }

    [WinFormsFact]
    public void TableLayoutPanel_Controls_ShouldSerializeValue_Success()
    {
        PropertyDescriptor property = TypeDescriptor.GetProperties(typeof(TableLayoutPanel))[nameof(Control.Controls)];
        using TableLayoutPanel control = new();
        Assert.False(property.ShouldSerializeValue(control));

        Assert.Empty(control.Controls);
        Assert.False(property.ShouldSerializeValue(control));

        using Control child = new();
        control.Controls.Add(child);
        Assert.Same(child, Assert.Single(control.Controls));
        Assert.True(property.ShouldSerializeValue(control));

        property.ResetValue(control);
        Assert.Same(child, Assert.Single(control.Controls));
        Assert.True(property.ShouldSerializeValue(control));
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize, 1)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows, 0)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns, 1)]
    public void TableLayoutPanel_GrowStyle_Set_GetReturnsExpected(TableLayoutPanelGrowStyle value, int expectedLayoutCallCount)
    {
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("GrowStyle", e.AffectedProperty);
            layoutCallCount++;
        };

        control.GrowStyle = value;
        Assert.Equal(value, control.GrowStyle);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.GrowStyle = value;
        Assert.Equal(value, control.GrowStyle);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [InvalidEnumData<TableLayoutPanelGrowStyle>]
    public void TableLayoutPanel_GrowStyle_SetInvalid_ThrowsArgumentOutOfRangeException(TableLayoutPanelGrowStyle value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<InvalidEnumArgumentException>("value", () => control.GrowStyle = value);
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetEmptyStub_Success()
    {
        TableLayoutSettingsTypeConverter converter = new();
        TableLayoutSettings settings = Assert.IsType<TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));

        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("LayoutSettings", e.AffectedProperty);
            layoutCallCount++;
        };

        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Empty(control.LayoutSettings.ColumnStyles);
        Assert.Empty(control.LayoutSettings.RowStyles);
        Assert.Equal(1, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Empty(control.LayoutSettings.ColumnStyles);
        Assert.Empty(control.LayoutSettings.RowStyles);
        Assert.Equal(2, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetStubWithoutControls_Success()
    {
        TableLayoutSettingsTypeConverter converter = new();
        TableLayoutSettings settings = Assert.IsType<TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
        ColumnStyle columnStyle = new(SizeType.Percent, 1);
        RowStyle rowStyle = new(SizeType.Percent, 1);
        settings.ColumnStyles.Add(columnStyle);
        settings.RowStyles.Add(rowStyle);

        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("LayoutSettings", e.AffectedProperty);
            layoutCallCount++;
        };

        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Equal(columnStyle, Assert.Single(control.LayoutSettings.ColumnStyles));
        Assert.Equal(rowStyle, Assert.Single(control.LayoutSettings.RowStyles));
        Assert.Equal(1, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Empty(control.LayoutSettings.ColumnStyles);
        Assert.Empty(control.LayoutSettings.RowStyles);
        Assert.Equal(2, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetStubWithControls_Success()
    {
        TableLayoutSettingsTypeConverter converter = new();
        TableLayoutSettings settings = Assert.IsType<TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
        ColumnStyle columnStyle = new(SizeType.Percent, 1);
        RowStyle rowStyle = new(SizeType.Percent, 1);

        settings.SetColumnSpan("name", 1);
        settings.SetRowSpan("name", 2);
        settings.SetColumn("name", 3);
        settings.SetRow("name", 4);
        settings.SetColumnSpan("noSuchName", 5);
        settings.SetRowSpan("noSuchName", 6);
        settings.SetColumn("noSuchName", 7);
        settings.SetRow("noSuchName", 8);
        settings.ColumnStyles.Add(columnStyle);
        settings.RowStyles.Add(rowStyle);

        using TableLayoutPanel control = new();
        using Control controlWithName = new() { Name = "name" };
        using Control controlWithDefaultName = new();
        using ControlWithNullName controlWithoutName = new();
        control.Controls.Add(controlWithName);
        control.Controls.Add(controlWithDefaultName);
        control.Controls.Add(controlWithoutName);
        int layoutCallCount = 0;
        void layoutHandler(object sender, LayoutEventArgs e)
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("LayoutSettings", e.AffectedProperty);
            layoutCallCount++;
        }

        control.Layout += layoutHandler;

        try
        {
            control.LayoutSettings = settings;
            Assert.NotSame(settings, control.LayoutSettings);
            Assert.Equal(columnStyle, Assert.Single(control.LayoutSettings.ColumnStyles));
            Assert.Equal(rowStyle, Assert.Single(control.LayoutSettings.RowStyles));
            Assert.Equal(1, control.LayoutSettings.GetColumnSpan(controlWithName));
            Assert.Equal(2, control.LayoutSettings.GetRowSpan(controlWithName));
            Assert.Equal(3, control.LayoutSettings.GetColumn(controlWithName));
            Assert.Equal(4, control.LayoutSettings.GetRow(controlWithName));
            Assert.Equal(1, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.LayoutSettings = settings;
            Assert.NotSame(settings, control.LayoutSettings);
            Assert.Empty(control.LayoutSettings.ColumnStyles);
            Assert.Empty(control.LayoutSettings.RowStyles);
            Assert.Equal(2, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }
        finally
        {
            control.Layout -= layoutHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetStub_ResetsOriginalSettings()
    {
        TableLayoutSettingsTypeConverter converter = new();
        TableLayoutSettings settings = Assert.IsType<TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
        settings.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 1));
        settings.RowStyles.Add(new RowStyle(SizeType.Percent, 1));

        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("LayoutSettings", e.AffectedProperty);
            layoutCallCount++;
        };

        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Empty(settings.ColumnStyles);
        Assert.Empty(settings.ColumnStyles);
        Assert.Equal(1, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.LayoutSettings = settings;
        Assert.NotSame(settings, control.LayoutSettings);
        Assert.Empty(settings.ColumnStyles);
        Assert.Empty(settings.ColumnStyles);
        Assert.Equal(2, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetNull_ThrowsNNotSupportedException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<NotSupportedException>(() => control.LayoutSettings = null);
    }

    [WinFormsFact]
    public void TableLayoutPanel_LayoutSettings_SetNonStub_ThrowsNNotSupportedException()
    {
        TableLayoutPanel otherControl = new();

        using TableLayoutPanel control = new();
        Assert.Throws<NotSupportedException>(() => control.LayoutSettings = otherControl.LayoutSettings);
    }

    [WinFormsTheory]
    [InlineData(0, 1)]
    [InlineData(1, 1)]
    public void TableLayoutPanel_RowCount_Set_GetReturnsExpected(int value, int expectedLayoutCallCount)
    {
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(control, e.AffectedControl);
            Assert.Equal("Rows", e.AffectedProperty);
            layoutCallCount++;
        };

        control.RowCount = value;
        Assert.Equal(value, control.RowCount);
        Assert.Equal(expectedLayoutCallCount, layoutCallCount);
        Assert.False(control.IsHandleCreated);

        // Set same.
        control.RowCount = value;
        Assert.Equal(value, control.RowCount);
        Assert.Equal(expectedLayoutCallCount + 1, layoutCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_RowCount_SetNegative_ThrowsArgumentOutOfRangeException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("value", () => control.RowCount = -1);
    }

    [WinFormsFact]
    public void TableLayoutPanel_CreateControlsInstance_Invoke_ReturnsExpected()
    {
        using SubTableLayoutPanel control = new();
        TableLayoutControlCollection controls = Assert.IsType<TableLayoutControlCollection>(control.CreateControlsInstance());
        Assert.Empty(controls);
        Assert.Same(control, controls.Owner);
        Assert.False(controls.IsReadOnly);
        Assert.NotSame(controls, control.CreateControlsInstance());
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetAutoSizeMode_Invoke_ReturnsExpected()
    {
        using SubTableLayoutPanel control = new();
        Assert.Equal(AutoSizeMode.GrowOnly, control.GetAutoSizeMode());
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetCellPosition_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        Assert.Equal(new TableLayoutPanelCellPosition(-1, -1), control.GetCellPosition(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetCellPosition_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.GetCellPosition(null));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetCellPosition_InvalidColumn_ThrowsArgumentOutOfRangeException()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetCellPosition(child, new TableLayoutPanelCellPosition { Column = -2 });
        Assert.Throws<ArgumentOutOfRangeException>("column", () => control.GetCellPosition(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetCellPosition_InvalidRow_ThrowsArgumentOutOfRangeException()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetCellPosition(child, new TableLayoutPanelCellPosition { Row = -2 });
        Assert.Throws<ArgumentOutOfRangeException>("row", () => control.GetCellPosition(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetColumn_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        Assert.Equal(-1, control.GetColumn(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetColumn_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.GetColumn(null));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetColumnSpan_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        Assert.Equal(1, control.GetColumnSpan(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetColumnSpan_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.GetColumnSpan(null));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetColumnWidths_NoColumns_ReturnsExpected()
    {
        TableLayoutPanel panel = new();
        Assert.Empty(panel.GetColumnWidths());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetColumnWidths_InvokeNoChildren_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using Button control = new();
        TableLayoutPanel panel = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle
        };
        Assert.Equal(new int[] { 0, 0, 200 }, panel.GetColumnWidths());
    }

    [WinFormsTheory]
    [InlineData(1, 1, 10, 11)]
    [InlineData(2, 2, 11, 12)]
    [InlineData(4, 4, 10, 11)]
    public void TableLayoutPanel_GetControlFromPosition_ControlExistsAddedToContainer_ReturnsExpected(int columnSpan, int rowSpan, int column, int row)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.Controls.Add(child);
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);
        control.SetColumn(child, 10);
        control.SetRow(child, 11);

        Assert.Equal(child, control.GetControlFromPosition(column, row));

        // Call again to test caching.
        Assert.Equal(child, control.GetControlFromPosition(column, row));

        // Invalidate the column cache.
        control.SetColumn(child, 20);
        Assert.Null(control.GetControlFromPosition(column, row));

        // Revalidate the column cache.
        control.SetColumn(child, 10);
        Assert.Same(child, control.GetControlFromPosition(column, row));

        // Invalidate the row cache.
        control.SetRow(child, 20);
        Assert.Null(control.GetControlFromPosition(column, row));

        // Revalidate the row cache.
        control.SetRow(child, 11);
        Assert.Same(child, control.GetControlFromPosition(column, row));
    }

    [WinFormsTheory]
    [InlineData(1, 1, 9, 11)]
    [InlineData(1, 1, 10, 10)]
    [InlineData(1, 1, 11, 11)]
    [InlineData(1, 1, 10, 12)]
    [InlineData(2, 2, 8, 9)]
    [InlineData(2, 2, 9, 10)]
    [InlineData(4, 4, 9, 10)]
    public void TableLayoutPanel_GetControlFromPosition_OutOfRange_ReturnsNull(int columnSpan, int rowSpan, int column, int row)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.Controls.Add(child);
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);
        control.SetColumn(child, 10);
        control.SetRow(child, 11);

        Assert.Null(control.GetControlFromPosition(column, row));

        // Call again to test caching.
        Assert.Null(control.GetControlFromPosition(column, row));
    }

    [WinFormsTheory]
    [InlineData(1, 1, 10, 11)]
    [InlineData(2, 2, 11, 12)]
    [InlineData(4, 4, 10, 11)]
    public void TableLayoutPanel_GetControlFromPosition_ControlExistsNotVisible_ReturnsNull(int columnSpan, int rowSpan, int column, int row)
    {
        using Control child = new()
        {
            Visible = false
        };
        using TableLayoutPanel control = new();
        control.Controls.Add(child);
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);
        control.SetColumn(child, 10);
        control.SetRow(child, 11);

        Assert.Null(control.GetControlFromPosition(column, row));

        // Call again to test caching.
        Assert.Null(control.GetControlFromPosition(column, row));
    }

    [WinFormsTheory]
    [InlineData(1, 1, 10, 11)]
    [InlineData(2, 2, 11, 12)]
    [InlineData(4, 4, 10, 11)]
    public void TableLayoutPanel_GetControlFromPosition_ControlExistsButNotAddedToContainer_ReturnsNull(int columnSpan, int rowSpan, int column, int row)
    {
        using Control child = new()
        {
            Visible = false
        };
        using TableLayoutPanel control = new();
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);
        control.SetColumn(child, 10);
        control.SetRow(child, 11);

        Assert.Null(control.GetControlFromPosition(column, row));

        // Call again to test caching.
        Assert.Null(control.GetControlFromPosition(column, row));
    }

    [WinFormsTheory]
    [InlineData(1, 1, 10, 11)]
    [InlineData(2, 2, 11, 12)]
    [InlineData(4, 4, 10, 11)]
    public void TableLayoutPanel_GetControlFromPosition_ControlExistsButNotAddedToContainerWithChildren_ReturnsNull(int columnSpan, int rowSpan, int column, int row)
    {
        using Control otherChild = new();
        using Control child = new()
        {
            Visible = false
        };
        using TableLayoutPanel control = new();
        control.Controls.Add(otherChild);
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);
        control.SetColumn(child, 10);
        control.SetRow(child, 11);

        Assert.Null(control.GetControlFromPosition(column, row));

        // Call again to test caching.
        Assert.Null(control.GetControlFromPosition(column, row));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetControlFromPosition_NoSuchControl_ReturnsExpected()
    {
        using TableLayoutPanel control = new();
        Assert.Null(control.GetControlFromPosition(0, 0));
    }

    [WinFormsTheory]
    [InlineData(-2)]
    [InlineData(-1)]
    public void TableLayoutPanel_GetControlFromPosition_NegativeColumn_ThrowsArgumentOutOfRangeException(int column)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("column", () => control.GetControlFromPosition(column, 0));
    }

    [WinFormsTheory]
    [InlineData(-2)]
    [InlineData(-1)]
    public void TableLayoutPanel_GetControlFromPosition_NegativeRow_ThrowsArgumentOutOfRangeException(int row)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("row", () => control.GetControlFromPosition(0, row));
    }

    [WinFormsTheory]
    [InlineData(1, 1)]
    [InlineData(2, 3)]
    public void TableLayoutPanel_GetPositionFromControl_ControlExists_ReturnsExpected(int columnSpan, int rowSpan)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.Controls.Add(child);
        control.SetColumn(child, 1);
        control.SetRow(child, 2);
        control.SetColumnSpan(child, columnSpan);
        control.SetRowSpan(child, rowSpan);

        Assert.Equal(new TableLayoutPanelCellPosition(1, 2), control.GetPositionFromControl(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetPositionFromControl_NotVisibleSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.Controls.Add(child);
        control.SetColumn(child, 1);
        control.SetRow(child, 2);

        Assert.Equal(new TableLayoutPanelCellPosition(1, 2), control.GetPositionFromControl(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetPositionFromControl_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetColumn(child, 1);
        control.SetRow(child, 2);

        Assert.Equal(new TableLayoutPanelCellPosition(-1, -1), control.GetPositionFromControl(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetPositionFromControl_NullControl_ReturnsExpected()
    {
        using TableLayoutPanel control = new();
        Assert.Equal(new TableLayoutPanelCellPosition(-1, -1), control.GetPositionFromControl(null));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetRow_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        Assert.Equal(-1, control.GetRow(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetRow_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.GetRow(null));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetRowHeights_NoRows_ReturnsExpected()
    {
        using TableLayoutPanel control = new();
        Assert.Empty(control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_InvokeNoChildren_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle
        };
        Assert.Equal(new int[] { 0, 100 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomAutoSizeStyles_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.AutoSize, 20));
        Assert.Equal(new int[] { 0, 80 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize, 30));
        Assert.Equal(new int[] { 0, 80 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize, 6));
        Assert.Equal(new int[] { 0, 80 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomAbsoluteStyles_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle
        };
        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 10));
        Assert.Equal(new int[] { 10, 90 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 5));
        Assert.Equal(new int[] { 10, 90 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 6));
        Assert.Equal(new int[] { 10, 90 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomPercentStyles_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.Percent, 20));
        Assert.Equal(new int[] { 80, 0 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Percent, 30));
        Assert.Equal(new int[] { 32, 48 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Percent, 6));
        Assert.Equal(new int[] { 32, 48 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomStylesPercentOverflow_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.Percent, 75));
        Assert.Equal(new int[] { 80, 0 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 100));
        Assert.Equal(new int[] { -20, 100 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomStylesPercentAutoSize_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.Percent, 75));
        Assert.Equal(new int[] { 80, 0 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize, 100));
        Assert.Equal(new int[] { 80, 0 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomStylesAbsoluteAutoSize_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 50));
        Assert.Equal(new int[] { 50, 30 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize, 100));
        Assert.Equal(new int[] { 50, 30 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomStylesAbsoluteOverflow_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(70, 80)
        };
        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 100));
        Assert.Equal(new int[] { 100, 0 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 100));
        Assert.Equal(new int[] { 100, 100 }, control.GetRowHeights());
    }

    [WinFormsTheory]
    [InlineData(TableLayoutPanelGrowStyle.FixedSize)]
    [InlineData(TableLayoutPanelGrowStyle.AddRows)]
    [InlineData(TableLayoutPanelGrowStyle.AddColumns)]
    public void TableLayoutPanel_GetRowHeights_CustomInvalidStyles_ReturnsExpected(TableLayoutPanelGrowStyle growStyle)
    {
        using TableLayoutPanel control = new()
        {
            ColumnCount = 3,
            RowCount = 2,
            GrowStyle = growStyle,
            ClientSize = new Size(50, 50)
        };
        control.RowStyles.Add(new RowStyle(SizeType.AutoSize - 1, 22));
        Assert.Equal(new int[] { 0, 50 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize - 1, 22));
        Assert.Equal(new int[] { 0, 50 }, control.GetRowHeights());

        control.RowStyles.Add(new RowStyle(SizeType.AutoSize - 1, 6));
        Assert.Equal(new int[] { 0, 50 }, control.GetRowHeights());
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetRowSpan_NoSuchControl_ReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        Assert.Equal(1, control.GetRowSpan(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetRowSpan_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.GetRowSpan(null));
    }

    [WinFormsTheory]
    [InlineData(0, true)]
    [InlineData(SubTableLayoutPanel.ScrollStateAutoScrolling, false)]
    [InlineData(SubTableLayoutPanel.ScrollStateFullDrag, false)]
    [InlineData(SubTableLayoutPanel.ScrollStateHScrollVisible, false)]
    [InlineData(SubTableLayoutPanel.ScrollStateUserHasScrolled, false)]
    [InlineData(SubTableLayoutPanel.ScrollStateVScrollVisible, false)]
    [InlineData(int.MaxValue, false)]
    [InlineData((-1), false)]
    public void TableLayoutPanel_GetScrollState_Invoke_ReturnsExpected(int bit, bool expected)
    {
        using SubTableLayoutPanel control = new();
        Assert.Equal(expected, control.GetScrollState(bit));
    }

    [WinFormsTheory]
    [InlineData(ControlStyles.ContainerControl, true)]
    [InlineData(ControlStyles.UserPaint, true)]
    [InlineData(ControlStyles.Opaque, false)]
    [InlineData(ControlStyles.ResizeRedraw, false)]
    [InlineData(ControlStyles.FixedWidth, false)]
    [InlineData(ControlStyles.FixedHeight, false)]
    [InlineData(ControlStyles.StandardClick, true)]
    [InlineData(ControlStyles.Selectable, false)]
    [InlineData(ControlStyles.UserMouse, false)]
    [InlineData(ControlStyles.SupportsTransparentBackColor, true)]
    [InlineData(ControlStyles.StandardDoubleClick, true)]
    [InlineData(ControlStyles.AllPaintingInWmPaint, false)]
    [InlineData(ControlStyles.CacheText, false)]
    [InlineData(ControlStyles.EnableNotifyMessage, false)]
    [InlineData(ControlStyles.DoubleBuffer, false)]
    [InlineData(ControlStyles.OptimizedDoubleBuffer, false)]
    [InlineData(ControlStyles.UseTextForAccessibility, true)]
    [InlineData((ControlStyles)0, true)]
    [InlineData((ControlStyles)int.MaxValue, false)]
    [InlineData((ControlStyles)(-1), false)]
    public void TableLayoutPanel_GetStyle_Invoke_ReturnsExpected(ControlStyles flag, bool expected)
    {
        using SubTableLayoutPanel control = new();
        Assert.Equal(expected, control.GetStyle(flag));

        // Call again to test caching.
        Assert.Equal(expected, control.GetStyle(flag));
    }

    [WinFormsFact]
    public void TableLayoutPanel_GetTopLevel_Invoke_ReturnsExpected()
    {
        using SubTableLayoutPanel control = new();
        Assert.False(control.GetTopLevel());
    }

    public static IEnumerable<object[]> OnCellPaint_TestData()
    {
        yield return new object[] { null };

        Bitmap image = new(10, 10);
        Graphics graphics = Graphics.FromImage(image);
        yield return new object[] { new TableLayoutCellPaintEventArgs(graphics, Rectangle.Empty, Rectangle.Empty, 0, 0) };
    }

    [WinFormsTheory]
    [MemberData(nameof(OnCellPaint_TestData))]
    public void TableLayoutPanel_OnCellPaint_Invoke_CallsCellPaint(TableLayoutCellPaintEventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        int callCount = 0;
        TableLayoutCellPaintEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.CellPaint += handler;
        control.OnCellPaint(eventArgs);
        Assert.Equal(1, callCount);

        // Remove handler.
        control.CellPaint -= handler;
        control.OnCellPaint(eventArgs);
        Assert.Equal(1, callCount);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void TableLayoutPanel_OnHandleCreated_InvokeWithHandle_CallsHandleCreated(EventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleCreated += handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);

        // Remove handler.
        control.HandleCreated -= handler;
        control.OnHandleCreated(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void TableLayoutPanel_OnHandleDestroyed_Invoke_CallsHandleDestroyed(EventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleDestroyed += handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.HandleDestroyed -= handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [NewAndDefaultData<EventArgs>]
    public void TableLayoutPanel_OnHandleDestroyed_InvokeWithHandle_CallsHandleDestroyed(EventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int callCount = 0;
        EventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.HandleDestroyed += handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);

        // Remove handler.
        control.HandleDestroyed -= handler;
        control.OnHandleDestroyed(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
    }

    public static IEnumerable<object[]> OnLayout_TestData()
    {
        yield return new object[] { new LayoutEventArgs(null, null) };
        yield return new object[] { new LayoutEventArgs(new Control(), null) };
        yield return new object[] { new LayoutEventArgs(new Control(), string.Empty) };
        yield return new object[] { new LayoutEventArgs(new Control(), "ChildIndex") };
        yield return new object[] { new LayoutEventArgs(new Control(), "Visible") };
        yield return new object[] { new LayoutEventArgs(new Control(), "Items") };
        yield return new object[] { new LayoutEventArgs(new Control(), "Rows") };
        yield return new object[] { new LayoutEventArgs(new Control(), "Columns") };
        yield return new object[] { new LayoutEventArgs(new Control(), "RowStyles") };
        yield return new object[] { new LayoutEventArgs(new Control(), "ColumnStyles") };
        yield return new object[] { new LayoutEventArgs(new Control(), "TableIndex") };
        yield return new object[] { new LayoutEventArgs(new Control(), "GrowStyle") };
        yield return new object[] { new LayoutEventArgs(new Control(), "CellBorderStyle") };
        yield return new object[] { new LayoutEventArgs(new Control(), "LayoutSettings") };
        yield return new object[] { new LayoutEventArgs(new Control(), "NoSuchProperty") };
    }

    [WinFormsTheory]
    [MemberData(nameof(OnLayout_TestData))]
    public void TableLayoutPanel_OnLayout_Invoke_CallsLayout(LayoutEventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        int callCount = 0;
        LayoutEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.Layout += handler;
        control.OnLayout(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Layout -= handler;
        control.OnLayout(eventArgs);
        Assert.Equal(1, callCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [MemberData(nameof(OnLayout_TestData))]
    public void TableLayoutPanel_OnLayout_InvokeWithHandle_CallsLayout(LayoutEventArgs eventArgs)
    {
        using SubTableLayoutPanel control = new();
        Assert.NotEqual(IntPtr.Zero, control.Handle);
        int invalidatedCallCount = 0;
        control.Invalidated += (sender, e) => invalidatedCallCount++;
        int styleChangedCallCount = 0;
        control.StyleChanged += (sender, e) => styleChangedCallCount++;
        int createdCallCount = 0;
        control.HandleCreated += (sender, e) => createdCallCount++;
        int callCount = 0;
        LayoutEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.Layout += handler;
        control.OnLayout(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(1, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);

        // Remove handler.
        control.Layout -= handler;
        control.OnLayout(eventArgs);
        Assert.Equal(1, callCount);
        Assert.True(control.IsHandleCreated);
        Assert.Equal(2, invalidatedCallCount);
        Assert.Equal(0, styleChangedCallCount);
        Assert.Equal(0, createdCallCount);
    }

    [WinFormsFact]
    public void TableLayoutPanel_OnLayout_InvokeNullE_ThrowsNullReferenceException()
    {
        using SubTableLayoutPanel control = new();
        Assert.Throws<NullReferenceException>(() => control.OnLayout(null));
    }

    public static IEnumerable<object[]> OnPaintBackground_TestData()
    {
        foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
        {
            foreach (TableLayoutPanelCellBorderStyle cellBorderStyle in Enum.GetValues(typeof(TableLayoutPanelCellBorderStyle)))
            {
                foreach (bool hScroll in new bool[] { true, false })
                {
                    foreach (bool vScroll in new bool[] { true, false })
                    {
                        yield return new object[] { rightToLeft, cellBorderStyle, hScroll, vScroll };
                    }
                }
            }
        }
    }

    [WinFormsTheory]
    [MemberData(nameof(OnPaintBackground_TestData))]
    public void TableLayoutPanel_OnPaintBackground_InvokeEmpty_Success(RightToLeft rightToLeft, TableLayoutPanelCellBorderStyle cellBorderStyle, bool hScroll, bool vScroll)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        using PaintEventArgs eventArgs = new(graphics, new Rectangle(1, 2, 3, 4));

        using SubTableLayoutPanel control = new()
        {
            RightToLeft = rightToLeft,
            CellBorderStyle = cellBorderStyle,
            HScroll = hScroll,
            VScroll = vScroll,
        };
        int cellPaintCallCount = 0;
        control.CellPaint += (sender, e) => cellPaintCallCount++;
        int callCount = 0;
        PaintEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        // Call with handler.
        control.Paint += handler;
        control.OnPaintBackground(eventArgs);
        Assert.Equal(0, callCount);
        Assert.Equal(0, cellPaintCallCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Paint -= handler;
        control.OnPaintBackground(eventArgs);
        Assert.Equal(0, callCount);
        Assert.Equal(0, cellPaintCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsTheory]
    [MemberData(nameof(OnPaintBackground_TestData))]
    public void TableLayoutPanel_OnPaintBackground_InvokeNotEmpty_Success(RightToLeft rightToLeft, TableLayoutPanelCellBorderStyle cellBorderStyle, bool hScroll, bool vScroll)
    {
        using Bitmap image = new(10, 10);
        using Graphics graphics = Graphics.FromImage(image);
        using PaintEventArgs eventArgs = new(graphics, new Rectangle(15, 2, 5, 20));

        using SubTableLayoutPanel control = new()
        {
            RightToLeft = rightToLeft,
            CellBorderStyle = cellBorderStyle,
            HScroll = hScroll,
            VScroll = vScroll,
        };
        int cellPaintCallCount = 0;
        control.CellPaint += (sender, e) =>
        {
            Assert.Same(eventArgs.Graphics, e.Graphics);
            Assert.Equal(eventArgs.ClipRectangle, e.ClipRectangle);
            Assert.Equal(1, e.Column);
            if ((cellPaintCallCount % 2) == 0)
            {
                Assert.Equal(0, e.Row);
            }
            else
            {
                Assert.Equal(1, e.Row);
            }

            cellPaintCallCount++;
        };
        int callCount = 0;
        PaintEventHandler handler = (sender, e) =>
        {
            Assert.Same(control, sender);
            Assert.Same(eventArgs, e);
            callCount++;
        };

        using Control child1 = new();
        control.Controls.Add(child1);
        control.SetRow(child1, 0);
        control.SetColumn(child1, 1);

        using Control child2 = new();
        control.Controls.Add(child2);
        control.SetRow(child2, 1);
        control.SetColumn(child2, 1);

        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 10));
        control.RowStyles.Add(new RowStyle(SizeType.Absolute, 10));
        control.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 10));
        control.ColumnStyles.Add(new ColumnStyle(SizeType.Absolute, 10));

        // Call with handler.
        control.Paint += handler;
        control.OnPaintBackground(eventArgs);
        Assert.Equal(0, callCount);
        Assert.Equal(2, cellPaintCallCount);
        Assert.False(control.IsHandleCreated);

        // Remove handler.
        control.Paint -= handler;
        control.OnPaintBackground(eventArgs);
        Assert.Equal(0, callCount);
        Assert.Equal(4, cellPaintCallCount);
        Assert.False(control.IsHandleCreated);
    }

    [WinFormsFact]
    public void TableLayoutPanel_OnPaintBackground_NullEventArgs_ThrowsArgumentNullException()
    {
        using SubTableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>(() => control.OnPaintBackground(null));
    }

    public static IEnumerable<object[]> SetCellPosition_TestData()
    {
        yield return new object[] { new TableLayoutPanelCellPosition(-1, -1) };
        yield return new object[] { new TableLayoutPanelCellPosition(0, -1) };
        yield return new object[] { new TableLayoutPanelCellPosition(-1, 0) };
        yield return new object[] { new TableLayoutPanelCellPosition(0, 0) };
        yield return new object[] { new TableLayoutPanelCellPosition(1, 2) };
    }

    [WinFormsTheory]
    [MemberData(nameof(SetCellPosition_TestData))]
    public void TableLayoutPanel_SetCellPosition_Invoke_GetReturnsExpected(TableLayoutPanelCellPosition value)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;

        control.SetCellPosition(child, value);
        Assert.Equal(value, control.GetCellPosition(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);

        // Set same.
        control.SetCellPosition(child, value);
        Assert.Equal(value, control.GetCellPosition(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);
    }

    public static IEnumerable<object[]> SetCellPosition_ControlWithParent_TestData()
    {
        yield return new object[] { new TableLayoutPanelCellPosition(-1, -1), 1 };
        yield return new object[] { new TableLayoutPanelCellPosition(0, -1), 1 };
        yield return new object[] { new TableLayoutPanelCellPosition(-1, 0), 1 };
        yield return new object[] { new TableLayoutPanelCellPosition(0, 0), 1 };
        yield return new object[] { new TableLayoutPanelCellPosition(1, 2), 1 };
    }

    [WinFormsTheory]
    [MemberData(nameof(SetCellPosition_ControlWithParent_TestData))]
    public void TableLayoutPanel_SetCellPosition_InvokeControlWithParent_GetReturnsExpected(TableLayoutPanelCellPosition value, int expectedParentLayoutCallCount)
    {
        using Control parent = new();
        using Control child = new()
        {
            Parent = parent
        };
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;
        int parentLayoutCallCount = 0;
        void parentHandler(object sender, LayoutEventArgs eventArgs)
        {
            Assert.Same(parent, sender);
            Assert.Same(child, eventArgs.AffectedControl);
            Assert.Equal("TableIndex", eventArgs.AffectedProperty);
            parentLayoutCallCount++;
        }

        parent.Layout += parentHandler;

        try
        {
            control.SetCellPosition(child, value);
            Assert.Equal(value, control.GetCellPosition(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);

            // Set same.
            control.SetCellPosition(child, value);
            Assert.Equal(value, control.GetCellPosition(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount * 2, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);
        }
        finally
        {
            parent.Layout -= parentHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetCellPosition_InvokeMultipleTimes_GetReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetCellPosition(child, new TableLayoutPanelCellPosition(1, 1));
        Assert.Equal(new TableLayoutPanelCellPosition(1, 1), control.GetCellPosition(child));

        control.SetCellPosition(child, new TableLayoutPanelCellPosition(2, 2));
        Assert.Equal(new TableLayoutPanelCellPosition(2, 2), control.GetCellPosition(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetCellPosition_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.SetCellPosition(null, new TableLayoutPanelCellPosition()));
    }

    [WinFormsTheory]
    [InlineData(-1)]
    [InlineData(0)]
    [InlineData(1)]
    [InlineData(2)]
    [InlineData(int.MaxValue)]
    public void TableLayoutPanel_SetColumn_Invoke_GetReturnsExpected(int value)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;

        control.SetColumn(child, value);
        Assert.Equal(value, control.GetColumn(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);

        // Set same.
        control.SetColumn(child, value);
        Assert.Equal(value, control.GetColumn(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(-1, 1)]
    [InlineData(0, 1)]
    [InlineData(1, 1)]
    [InlineData(2, 1)]
    [InlineData(int.MaxValue, 1)]
    public void TableLayoutPanel_SetColumn_InvokeControlWithParent_GetReturnsExpected(int value, int expectedParentLayoutCallCount)
    {
        using Control parent = new();
        using Control child = new()
        {
            Parent = parent
        };
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;
        int parentLayoutCallCount = 0;
        void parentHandler(object sender, LayoutEventArgs eventArgs)
        {
            Assert.Same(parent, sender);
            Assert.Same(child, eventArgs.AffectedControl);
            Assert.Equal("TableIndex", eventArgs.AffectedProperty);
            parentLayoutCallCount++;
        }

        parent.Layout += parentHandler;

        try
        {
            control.SetColumn(child, value);
            Assert.Equal(value, control.GetColumn(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);

            // Set same.
            control.SetColumn(child, value);
            Assert.Equal(value, control.GetColumn(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount * 2, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);
        }
        finally
        {
            parent.Layout -= parentHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetColumn_InvokeMultipleTimes_GetReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetColumn(child, 1);
        Assert.Equal(1, control.GetColumn(child));

        control.SetColumn(child, 2);
        Assert.Equal(2, control.GetColumn(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetColumn_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.SetColumn(null, 1));
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetColumn_InvalidColumn_ThrowsArgumentOutOfRangeException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("column", () => control.SetColumn(new Control(), -2));
    }

    [WinFormsTheory]
    [InlineData(1)]
    [InlineData(2)]
    [InlineData(int.MaxValue)]
    public void TableLayoutPanel_SetColumnSpan_Invoke_GetReturnsExpected(int value)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;

        control.SetColumnSpan(child, value);
        Assert.Equal(value, control.GetColumnSpan(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);

        // Set same.
        control.SetColumnSpan(child, value);
        Assert.Equal(value, control.GetColumnSpan(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(1, 1)]
    [InlineData(2, 1)]
    [InlineData(int.MaxValue, 1)]
    public void TableLayoutPanel_SetColumnSpan_InvokeControlWithParent_GetReturnsExpected(int value, int expectedParentLayoutCallCount)
    {
        using Control parent = new();
        using Control child = new()
        {
            Parent = parent
        };
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;
        int parentLayoutCallCount = 0;
        void parentHandler(object sender, LayoutEventArgs eventArgs)
        {
            Assert.Same(parent, sender);
            Assert.Same(child, eventArgs.AffectedControl);
            Assert.Equal("ColumnSpan", eventArgs.AffectedProperty);
            parentLayoutCallCount++;
        }

        parent.Layout += parentHandler;

        try
        {
            control.SetColumnSpan(child, value);
            Assert.Equal(value, control.GetColumnSpan(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);

            // Set same.
            control.SetColumnSpan(child, value);
            Assert.Equal(value, control.GetColumnSpan(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount + 1, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);
        }
        finally
        {
            parent.Layout -= parentHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetColumnSpan_InvokeMultipleTimes_GetReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();

        control.SetColumnSpan(child, 1);
        Assert.Equal(1, control.GetColumnSpan(child));

        control.SetColumnSpan(child, 2);
        Assert.Equal(2, control.GetColumnSpan(child));
    }

    [WinFormsTheory]
    [InlineData(0)]
    [InlineData(1)]
    public void TableLayoutPanel_SetColumnSpan_NullControl_ThrowsArgumentNullException(int value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.SetColumnSpan(null, value));
    }

    [WinFormsTheory]
    [InlineData(-1)]
    [InlineData(0)]
    public void TableLayoutPanel_SetColumnSpan_InvalidValue_ThrowsArgumentOutOfRangeException(int value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("value", () => control.SetColumnSpan(new Control(), value));
    }

    [WinFormsTheory]
    [InlineData(-1)]
    [InlineData(0)]
    [InlineData(1)]
    [InlineData(2)]
    [InlineData(int.MaxValue)]
    public void TableLayoutPanel_SetRow_Invoke_GetReturnsExpected(int value)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;

        control.SetRow(child, value);
        Assert.Equal(value, control.GetRow(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);

        // Set same.
        control.SetRow(child, value);
        Assert.Equal(value, control.GetRow(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(-1, 1)]
    [InlineData(0, 1)]
    [InlineData(1, 1)]
    [InlineData(2, 1)]
    [InlineData(int.MaxValue, 1)]
    public void TableLayoutPanel_SetRow_InvokeControlWithParent_GetReturnsExpected(int value, int expectedParentLayoutCallCount)
    {
        using Control parent = new();
        using Control child = new()
        {
            Parent = parent
        };
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;
        int parentLayoutCallCount = 0;
        void parentHandler(object sender, LayoutEventArgs eventArgs)
        {
            Assert.Same(parent, sender);
            Assert.Same(child, eventArgs.AffectedControl);
            Assert.Equal("TableIndex", eventArgs.AffectedProperty);
            parentLayoutCallCount++;
        }

        parent.Layout += parentHandler;

        try
        {
            control.SetRow(child, value);
            Assert.Equal(value, control.GetRow(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);

            // Set same.
            control.SetRow(child, value);
            Assert.Equal(value, control.GetRow(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount * 2, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);
        }
        finally
        {
            parent.Layout -= parentHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetRow_InvokeMultipleTimes_GetReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetRow(child, 1);
        Assert.Equal(1, control.GetRow(child));

        control.SetRow(child, 2);
        Assert.Equal(2, control.GetRow(child));
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetRow_NullControl_ThrowsArgumentNullException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.SetRow(null, 1));
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetRow_InvalidRow_ThrowsArgumentOutOfRangeException()
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("row", () => control.SetRow(new Control(), -2));
    }

    [WinFormsTheory]
    [InlineData(1)]
    [InlineData(2)]
    [InlineData(int.MaxValue)]
    public void TableLayoutPanel_SetRowSpan_Invoke_GetReturnsExpected(int value)
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;

        control.SetRowSpan(child, value);
        Assert.Equal(value, control.GetRowSpan(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);

        // Set same.
        control.SetRowSpan(child, value);
        Assert.Equal(value, control.GetRowSpan(child));
        Assert.Equal(0, layoutCallCount);
        Assert.Equal(0, childLayoutCallCount);
        Assert.False(control.IsHandleCreated);
        Assert.False(child.IsHandleCreated);
    }

    [WinFormsTheory]
    [InlineData(1, 1)]
    [InlineData(2, 1)]
    [InlineData(int.MaxValue, 1)]
    public void TableLayoutPanel_SetRowSpan_InvokeControlWithParent_GetReturnsExpected(int value, int expectedParentLayoutCallCount)
    {
        using Control parent = new();
        using Control child = new()
        {
            Parent = parent
        };
        using TableLayoutPanel control = new();
        int layoutCallCount = 0;
        control.Layout += (sender, e) => layoutCallCount++;
        int childLayoutCallCount = 0;
        child.Layout += (sender, e) => childLayoutCallCount++;
        int parentLayoutCallCount = 0;
        void parentHandler(object sender, LayoutEventArgs eventArgs)
        {
            Assert.Same(parent, sender);
            Assert.Same(child, eventArgs.AffectedControl);
            Assert.Equal("RowSpan", eventArgs.AffectedProperty);
            parentLayoutCallCount++;
        }

        parent.Layout += parentHandler;

        try
        {
            control.SetRowSpan(child, value);
            Assert.Equal(value, control.GetRowSpan(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);

            // Set same.
            control.SetRowSpan(child, value);
            Assert.Equal(value, control.GetRowSpan(child));
            Assert.Equal(0, layoutCallCount);
            Assert.Equal(0, childLayoutCallCount);
            Assert.Equal(expectedParentLayoutCallCount + 1, parentLayoutCallCount);
            Assert.False(control.IsHandleCreated);
            Assert.False(child.IsHandleCreated);
            Assert.False(parent.IsHandleCreated);
        }
        finally
        {
            parent.Layout -= parentHandler;
        }
    }

    [WinFormsFact]
    public void TableLayoutPanel_SetRowSpan_InvokeMultipleTimes_GetReturnsExpected()
    {
        using Control child = new();
        using TableLayoutPanel control = new();
        control.SetRowSpan(child, 1);
        Assert.Equal(1, control.GetRowSpan(child));

        control.SetRowSpan(child, 2);
        Assert.Equal(2, control.GetRowSpan(child));
    }

    [WinFormsTheory]
    [InlineData(0)]
    [InlineData(1)]
    public void TableLayoutPanel_SetRowSpan_NullControl_ThrowsArgumentNullException(int value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentNullException>("control", () => control.SetRowSpan(null, value));
    }

    [WinFormsTheory]
    [InlineData(-1)]
    [InlineData(0)]
    public void TableLayoutPanel_SetRowSpan_InvalidValue_ThrowsArgumentOutOfRangeException(int value)
    {
        using TableLayoutPanel control = new();
        Assert.Throws<ArgumentOutOfRangeException>("value", () => control.SetRowSpan(new Control(), value));
    }

    [WinFormsFact]
    public void TableLayoutPanel_IExtenderProviderCanExtend_InvokeParent_ReturnsTrue()
    {
        using Control extendee = new();
        using TableLayoutPanel control = new();
        extendee.Parent = control;

        IExtenderProvider extenderProvider = control;
        Assert.True(extenderProvider.CanExtend(extendee));
    }

    public static IEnumerable<object[]> IExtenderProvider_CanExtend_TestData()
    {
        yield return new object[] { null };
        yield return new object[] { new() };
        yield return new object[] { new Control() };
    }

    [WinFormsTheory]
    [MemberData(nameof(IExtenderProvider_CanExtend_TestData))]
    public void TableLayoutPanel_IExtenderProviderCanExtend_NotControl_ReturnsFalse(object obj)
    {
        using TableLayoutPanel control = new();
        IExtenderProvider extenderProvider = control;
        Assert.False(extenderProvider.CanExtend(obj));
    }

    [TypeDescriptionProvider(typeof(CustomTypeDescriptionProvider))]
    private class ControlWithNullName : Control
    {
    }

    private class CustomTypeDescriptionProvider : TypeDescriptionProvider
    {
        public CustomTypeDescriptionProvider()
        {
        }

        public override ICustomTypeDescriptor GetTypeDescriptor(Type objectType, object instance)
        {
            Mock<ICustomTypeDescriptor> mockDescriptor = new(MockBehavior.Strict);
            mockDescriptor
                .Setup(c => c.GetProperties())
                .Returns(new PropertyDescriptorCollection(Array.Empty<PropertyDescriptor>()));
            return mockDescriptor.Object;
        }
    }

    private class SubTableLayoutPanel : TableLayoutPanel
    {
        public new const int ScrollStateAutoScrolling = ScrollableControl.ScrollStateAutoScrolling;

        public new const int ScrollStateHScrollVisible = ScrollableControl.ScrollStateHScrollVisible;

        public new const int ScrollStateVScrollVisible = ScrollableControl.ScrollStateVScrollVisible;

        public new const int ScrollStateUserHasScrolled = ScrollableControl.ScrollStateUserHasScrolled;

        public new const int ScrollStateFullDrag = ScrollableControl.ScrollStateFullDrag;

        public new bool CanEnableIme => base.CanEnableIme;

        public new bool CanRaiseEvents => base.CanRaiseEvents;

        public new CreateParams CreateParams => base.CreateParams;

        public new Cursor DefaultCursor => base.DefaultCursor;

        public new ImeMode DefaultImeMode => base.DefaultImeMode;

        public new Padding DefaultMargin => base.DefaultMargin;

        public new Size DefaultMaximumSize => base.DefaultMaximumSize;

        public new Size DefaultMinimumSize => base.DefaultMinimumSize;

        public new Padding DefaultPadding => base.DefaultPadding;

        public new Size DefaultSize => base.DefaultSize;

        public new bool DesignMode => base.DesignMode;

        public new bool DoubleBuffered
        {
            get => base.DoubleBuffered;
            set => base.DoubleBuffered = value;
        }

        public new EventHandlerList Events => base.Events;

        public new int FontHeight
        {
            get => base.FontHeight;
            set => base.FontHeight = value;
        }

        public new ImeMode ImeModeBase
        {
            get => base.ImeModeBase;
            set => base.ImeModeBase = value;
        }

        public new bool HScroll
        {
            get => base.HScroll;
            set => base.HScroll = value;
        }

        public new bool ResizeRedraw
        {
            get => base.ResizeRedraw;
            set => base.ResizeRedraw = value;
        }

        public new bool ShowFocusCues => base.ShowFocusCues;

        public new bool ShowKeyboardCues => base.ShowKeyboardCues;

        public new bool VScroll
        {
            get => base.VScroll;
            set => base.VScroll = value;
        }

        public new ControlCollection CreateControlsInstance() => base.CreateControlsInstance();

        public new AutoSizeMode GetAutoSizeMode() => base.GetAutoSizeMode();

        public new bool GetScrollState(int bit) => base.GetScrollState(bit);

        public new bool GetStyle(ControlStyles flag) => base.GetStyle(flag);

        public new bool GetTopLevel() => base.GetTopLevel();

        public new void OnCellPaint(TableLayoutCellPaintEventArgs e) => base.OnCellPaint(e);

        public new void OnHandleCreated(EventArgs e) => base.OnHandleCreated(e);

        public new void OnHandleDestroyed(EventArgs e) => base.OnHandleDestroyed(e);

        public new void OnLayout(LayoutEventArgs levent) => base.OnLayout(levent);

        public new void OnPaintBackground(PaintEventArgs e) => base.OnPaintBackground(e);

        public new void ScaleControl(SizeF factor, BoundsSpecified specified) => base.ScaleControl(factor, specified);

        public new void ScaleCore(float dx, float dy) => base.ScaleCore(dx, dy);

        public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);
    }
}
