// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.

using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using WinForms.Common.Tests;
using Xunit;
using static Interop;

namespace System.Windows.Forms.Tests
{
    using Point = System.Drawing.Point;
    using Size = System.Drawing.Size;

    public class UpDownBaseTests : IClassFixture<ThreadExceptionFixture>
    {
        [WinFormsFact]
        public void UpDownBase_Ctor_Default()
        {
            using var control = new SubUpDownBase();
            Assert.Null(control.ActiveControl);
            Assert.False(control.AllowDrop);
            Assert.Equal(AnchorStyles.Top | AnchorStyles.Left, control.Anchor);
            Assert.False(control.AutoScroll);
            Assert.Equal(SizeF.Empty, control.AutoScaleDimensions);
            Assert.Equal(new SizeF(1, 1), control.AutoScaleFactor);
            Assert.Equal(Size.Empty, control.AutoScrollMargin);
            Assert.Equal(AutoScaleMode.Inherit, control.AutoScaleMode);
            Assert.Equal(Size.Empty, control.AutoScrollMinSize);
            Assert.Equal(Point.Empty, control.AutoScrollPosition);
            Assert.False(control.AutoSize);
            Assert.Equal(SystemColors.Window, control.BackColor);
            Assert.Null(control.BackgroundImage);
            Assert.Equal(ImageLayout.Tile, control.BackgroundImageLayout);
            Assert.NotNull(control.BindingContext);
            Assert.Same(control.BindingContext, control.BindingContext);
            Assert.Equal(BorderStyle.Fixed3D, control.BorderStyle);
            Assert.Equal(control.PreferredHeight, control.Bottom);
            Assert.Equal(new Rectangle(0, 0, 120, control.PreferredHeight), control.Bounds);
            Assert.False(control.CanEnableIme);
            Assert.False(control.CanFocus);
            Assert.True(control.CanRaiseEvents);
            Assert.True(control.CausesValidation);
            Assert.False(control.ChangingText);
            if (Application.UseVisualStyles)
            {
                Assert.Equal(new Rectangle(0, 0, 120, Control.DefaultFont.Height + 7), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, 120, Control.DefaultFont.Height + 7), control.DisplayRectangle);
                Assert.Equal(new Size(120, Control.DefaultFont.Height + 7), control.ClientSize);
                Assert.Equal(new Size(122, control.PreferredHeight), control.PreferredSize);
            }
            else
            {
                Assert.Equal(new Rectangle(0, 0, 116, Control.DefaultFont.Height + 3), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, 116, Control.DefaultFont.Height + 3), control.DisplayRectangle);
                Assert.Equal(new Size(116, Control.DefaultFont.Height + 3), control.ClientSize);
                Assert.Equal(new Size(123, control.PreferredHeight), control.PreferredSize);
            }
            Assert.Null(control.Container);
            Assert.False(control.ContainsFocus);
            Assert.Null(control.ContextMenuStrip);
            Assert.NotEmpty(control.Controls);
            Assert.Same(control.Controls, control.Controls);
            Assert.False(control.Created);
            Assert.Equal(SizeF.Empty, control.CurrentAutoScaleDimensions);
            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(120, control.PreferredHeight), control.DefaultSize);
            Assert.False(control.DesignMode);
            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(SystemColors.WindowText, control.ForeColor);
            Assert.True(control.HasChildren);
            Assert.Equal(control.PreferredHeight, 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.True(control.InterceptArrowKeys);
            Assert.False(control.InvokeRequired);
            Assert.False(control.IsAccessible);
            Assert.False(control.IsMirrored);
            Assert.NotNull(control.LayoutEngine);
            Assert.Same(control.LayoutEngine, control.LayoutEngine);
            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(Control.DefaultFont.Height + 7, control.PreferredHeight);
            Assert.Equal("Microsoft\u00AE .NET", control.ProductName);
            Assert.False(control.ReadOnly);
            Assert.False(control.RecreatingHandle);
            Assert.Null(control.Region);
            Assert.True(control.ResizeRedraw);
            Assert.Equal(120, control.Right);
            Assert.Equal(RightToLeft.No, control.RightToLeft);
            Assert.True(control.ShowFocusCues);
            Assert.True(control.ShowKeyboardCues);
            Assert.Null(control.Site);
            Assert.Equal(new Size(120, control.PreferredHeight), control.Size);
            Assert.Equal(0, control.TabIndex);
            Assert.True(control.TabStop);
            Assert.Empty(control.Text);
            Assert.Equal(HorizontalAlignment.Left, control.TextAlign);
            Assert.Equal(0, control.Top);
            Assert.Null(control.TopLevelControl);
            Assert.Equal(LeftRightAlignment.Right, control.UpDownAlign);
            Assert.False(control.UserEdit);
            Assert.False(control.UseWaitCursor);
            Assert.True(control.Visible);
            Assert.NotNull(control.VerticalScroll);
            Assert.Same(control.VerticalScroll, control.VerticalScroll);
            Assert.False(control.VScroll);
            Assert.Equal(120, control.Width);

            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_CreateParams_GetDefault_ReturnsExpected()
        {
            using var control = new SubUpDownBase();
            CreateParams createParams = control.CreateParams;
            Assert.Null(createParams.Caption);
            Assert.Null(createParams.ClassName);

            Assert.Equal(User32.CS.DBLCLKS, (User32.CS)createParams.ClassStyle);
            Assert.Equal(User32.WS.MAXIMIZEBOX | User32.WS.CLIPCHILDREN | User32.WS.CLIPSIBLINGS | User32.WS.VISIBLE | User32.WS.CHILD, (User32.WS)createParams.Style);

            if (Application.UseVisualStyles)
            {
                Assert.Equal(User32.WS_EX.CONTROLPARENT, (User32.WS_EX)createParams.ExStyle);
            }
            else
            {
                Assert.Equal(User32.WS_EX.CLIENTEDGE | User32.WS_EX.CONTROLPARENT, (User32.WS_EX)createParams.ExStyle);
            }

            Assert.Equal(control.PreferredHeight, createParams.Height);
            Assert.Equal(IntPtr.Zero, createParams.Parent);
            Assert.Null(createParams.Param);
            Assert.Equal(120, createParams.Width);
            Assert.Equal(0, createParams.X);
            Assert.Equal(0, createParams.Y);
            Assert.Same(createParams, control.CreateParams);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [InlineData(BorderStyle.None, 0x56010000, 0x10000)]
        [InlineData(BorderStyle.Fixed3D, 0x56010000, 0x10200)]
        [InlineData(BorderStyle.FixedSingle, 0x56810000, 0x10000)]
        public void UpDownSubUpDownBase_CreateParams_GetBorderStyleNoVisualStyles_ReturnsExpected(BorderStyle borderStyle, int expectedStyle, int expectedExStyle)
        {
            if (Application.RenderWithVisualStyles)
            {
                return;
            }

            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle
            };
            CreateParams createParams = control.CreateParams;
            Assert.Null(createParams.Caption);
            Assert.Null(createParams.ClassName);
            Assert.Equal(0x8, createParams.ClassStyle);
            Assert.Equal(expectedExStyle, createParams.ExStyle);
            Assert.Equal(control.Height, createParams.Height);
            Assert.Equal(IntPtr.Zero, createParams.Parent);
            Assert.Null(createParams.Param);
            Assert.Equal(expectedStyle, createParams.Style);
            Assert.Equal(120, createParams.Width);
            Assert.Equal(0, createParams.X);
            Assert.Equal(0, createParams.Y);
            Assert.Same(createParams, control.CreateParams);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_AutoScroll_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            int layoutCallCount = 0;
            control.Layout += (sender, e) => layoutCallCount++;

            control.AutoScroll = value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.AutoScroll = value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set different.
            control.AutoScroll = !value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_AutoScroll_SetWithHandle_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            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) => layoutCallCount++;

            control.AutoScroll = value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.AutoScroll = value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set different.
            control.AutoScroll = !value;
            Assert.False(control.AutoScroll);
            Assert.False(control.GetScrollState(SubUpDownBase.ScrollStateAutoScrolling));
            Assert.Equal(0, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> AutoScrollMargin_Set_TestData()
        {
            yield return new object[] { true, new Size(0, 0) };
            yield return new object[] { true, new Size(1, 0) };
            yield return new object[] { true, new Size(0, 1) };
            yield return new object[] { true, new Size(1, 2) };
            yield return new object[] { false, new Size(0, 0) };
            yield return new object[] { false, new Size(1, 0) };
            yield return new object[] { false, new Size(0, 1) };
            yield return new object[] { false, new Size(1, 2) };
        }

        [WinFormsTheory]
        [MemberData(nameof(AutoScrollMargin_Set_TestData))]
        public void UpDownBase_AutoScrollMargin_Set_GetReturnsExpected(bool autoScroll, Size value)
        {
            using var control = new SubUpDownBase
            {
                AutoScroll = autoScroll
            };
            int layoutCallCount = 0;
            control.Layout += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Null(e.AffectedControl);
                Assert.Null(e.AffectedProperty);
                layoutCallCount++;
            };

            control.AutoScrollMargin = value;
            Assert.Equal(value, control.AutoScrollMargin);
            Assert.False(control.AutoScroll);
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.AutoScrollMargin = value;
            Assert.Equal(value, control.AutoScrollMargin);
            Assert.False(control.AutoScroll);
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [MemberData(nameof(AutoScrollMargin_Set_TestData))]
        public void UpDownBase_AutoScrollMargin_SetWithHandle_GetReturnsExpected(bool autoScroll, Size value)
        {
            using var control = new SubUpDownBase
            {
                AutoScroll = autoScroll
            };
            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.Null(e.AffectedControl);
                Assert.Null(e.AffectedProperty);
                layoutCallCount++;
            };

            control.AutoScrollMargin = value;
            Assert.Equal(value, control.AutoScrollMargin);
            Assert.False(control.AutoScroll);
            Assert.Equal(0, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.AutoScrollMargin = value;
            Assert.Equal(value, control.AutoScrollMargin);
            Assert.False(control.AutoScroll);
            Assert.Equal(0, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> AutoScrollMinSize_TestData()
        {
            foreach (bool autoScroll in new bool[] { true, false })
            {
                yield return new object[] { autoScroll, new Size(-1, -2), 1 };
                yield return new object[] { autoScroll, new Size(0, 0), 0 };
                yield return new object[] { autoScroll, new Size(1, 0), 1 };
                yield return new object[] { autoScroll, new Size(0, 1), 1 };
                yield return new object[] { autoScroll, new Size(1, 2), 1 };
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(AutoScrollMinSize_TestData))]
        public void UpDownBase_AutoScrollMinSize_Set_GetReturnsExpected(bool autoScroll, Size value, int expectedLayoutCallCount)
        {
            using var control = new SubUpDownBase
            {
                AutoScroll = autoScroll
            };
            int layoutCallCount = 0;
            control.Layout += (sender, e) =>
            {
                Assert.Same(control, sender);
                layoutCallCount++;
            };

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

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

        [WinFormsTheory]
        [MemberData(nameof(AutoScrollMinSize_TestData))]
        public void UpDownBase_AutoScrollMinSize_SetWithHandle_GetReturnsExpected(bool autoScroll, Size value, int expectedLayoutCallCount)
        {
            using var control = new SubUpDownBase
            {
                AutoScroll = autoScroll
            };
            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);
                layoutCallCount++;
            };

            control.AutoScrollMinSize = value;
            Assert.Equal(value, control.AutoScrollMinSize);
            Assert.False(control.AutoScroll);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.AutoScrollMinSize = value;
            Assert.Equal(value, control.AutoScrollMinSize);
            Assert.False(control.AutoScroll);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_AutoSize_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            int layoutCallCount = 0;
            control.Layout += (sender, e) => layoutCallCount++;

            control.AutoSize = value;
            Assert.Equal(value, control.AutoSize);
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.AutoSize = value;
            Assert.Equal(value, control.AutoSize);
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set different.
            control.AutoSize = !value;
            Assert.Equal(!value, control.AutoSize);
            Assert.Equal(0, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_AutoSize_SetWithHandler_CallsAutoSizeChanged()
        {
            using var control = new SubUpDownBase
            {
                AutoSize = true
            };
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            control.AutoSizeChanged += handler;

            // Set different.
            control.AutoSize = false;
            Assert.False(control.AutoSize);
            Assert.Equal(1, callCount);

            // Set same.
            control.AutoSize = false;
            Assert.False(control.AutoSize);
            Assert.Equal(1, callCount);

            // Set different.
            control.AutoSize = true;
            Assert.True(control.AutoSize);
            Assert.Equal(2, callCount);

            // Remove handler.
            control.AutoSizeChanged -= handler;
            control.AutoSize = false;
            Assert.False(control.AutoSize);
            Assert.Equal(2, callCount);
        }

        public static IEnumerable<object[]> BackColor_Set_TestData()
        {
            yield return new object[] { Color.Red, Color.Red };
            yield return new object[] { Color.Empty, SystemColors.Window };
        }

        [WinFormsTheory]
        [MemberData(nameof(BackColor_Set_TestData))]
        public void UpDownBase_BackColor_Set_GetReturnsExpected(Color value, Color expected)
        {
            using var control = new SubUpDownBase
            {
                BackColor = value
            };
            Assert.Equal(expected, control.BackColor);
            Assert.False(control.IsHandleCreated);

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

        public static IEnumerable<object[]> BackColor_SetWithHandle_TestData()
        {
            yield return new object[] { Color.Red, Color.Red, 1 };
            yield return new object[] { Color.Empty, SystemColors.Window, 1 };
        }

        [WinFormsTheory]
        [MemberData(nameof(BackColor_SetWithHandle_TestData))]
        public void UpDownBase_BackColor_SetWithHandle_GetReturnsExpected(Color value, Color expected, int expectedInvalidatedCallCount)
        {
            using var control = new SubUpDownBase();
            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.BackColor = value;
            Assert.Equal(expected, control.BackColor);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.BackColor = value;
            Assert.Equal(expected, control.BackColor);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(expectedInvalidatedCallCount + 1, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsFact]
        public void UpDownBase_BackColor_SetWithHandler_CallsBackColorChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            control.BackColorChanged += handler;

            // Set different.
            control.BackColor = Color.Red;
            Assert.Equal(Color.Red, control.BackColor);
            Assert.Equal(0, callCount);

            // Set same.
            control.BackColor = Color.Red;
            Assert.Equal(Color.Red, control.BackColor);
            Assert.Equal(0, callCount);

            // Set different.
            control.BackColor = Color.Empty;
            Assert.Equal(SystemColors.Window, control.BackColor);
            Assert.Equal(0, callCount);

            // Remove handler.
            control.BackColorChanged -= handler;
            control.BackColor = Color.Red;
            Assert.Equal(Color.Red, control.BackColor);
            Assert.Equal(0, callCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetImageTheoryData))]
        public void UpDownBase_BackgroundImage_Set_GetReturnsExpected(Image value)
        {
            using var control = new SubUpDownBase
            {
                BackgroundImage = value
            };
            Assert.Same(value, control.BackgroundImage);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.BackgroundImage = value;
            Assert.Same(value, control.BackgroundImage);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_BackgroundImage_SetWithHandler_CallsBackgroundImageChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            void handler(object sender, EventArgs e)
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            }
            control.BackgroundImageChanged += handler;

            // Set different.
            using var image1 = new Bitmap(10, 10);
            control.BackgroundImage = image1;
            Assert.Same(image1, control.BackgroundImage);
            Assert.Equal(1, callCount);

            // Set same.
            control.BackgroundImage = image1;
            Assert.Same(image1, control.BackgroundImage);
            Assert.Equal(1, callCount);

            // Set different.
            using var image2 = new Bitmap(10, 10);
            control.BackgroundImage = image2;
            Assert.Same(image2, control.BackgroundImage);
            Assert.Equal(2, callCount);

            // Set null.
            control.BackgroundImage = null;
            Assert.Null(control.BackgroundImage);
            Assert.Equal(3, callCount);

            // Remove handler.
            control.BackgroundImageChanged -= handler;
            control.BackgroundImage = image1;
            Assert.Same(image1, control.BackgroundImage);
            Assert.Equal(3, callCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryData), typeof(ImageLayout))]
        public void UpDownBase_BackgroundImageLayout_Set_GetReturnsExpected(ImageLayout value)
        {
            using var control = new SubUpDownBase
            {
                BackgroundImageLayout = value
            };
            Assert.Equal(value, control.BackgroundImageLayout);
            Assert.False(control.DoubleBuffered);
            Assert.False(control.IsHandleCreated);

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

        [WinFormsFact]
        public void UpDownBase_BackgroundImageLayout_SetWithHandler_CallsBackgroundImageLayoutChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            void handler(object sender, EventArgs e)
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            }
            control.BackgroundImageLayoutChanged += handler;

            // Set different.
            control.BackgroundImageLayout = ImageLayout.Center;
            Assert.Equal(ImageLayout.Center, control.BackgroundImageLayout);
            Assert.Equal(1, callCount);

            // Set same.
            control.BackgroundImageLayout = ImageLayout.Center;
            Assert.Equal(ImageLayout.Center, control.BackgroundImageLayout);
            Assert.Equal(1, callCount);

            // Set different.
            control.BackgroundImageLayout = ImageLayout.Stretch;
            Assert.Equal(ImageLayout.Stretch, control.BackgroundImageLayout);
            Assert.Equal(2, callCount);

            // Remove handler.
            control.BackgroundImageLayoutChanged -= handler;
            control.BackgroundImageLayout = ImageLayout.Center;
            Assert.Equal(ImageLayout.Center, control.BackgroundImageLayout);
            Assert.Equal(2, callCount);
        }

        public static IEnumerable<object[]> BorderStyle_Set_TestData()
        {
            if (Application.UseVisualStyles)
            {
                yield return new object[] { BorderStyle.Fixed3D, new Size(122, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.FixedSingle, new Size(122, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.None, new Size(122, Control.DefaultFont.Height + 3) };
            }
            else
            {
                yield return new object[] { BorderStyle.Fixed3D, new Size(123, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.FixedSingle, new Size(121, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.None, new Size(119, Control.DefaultFont.Height + 3) };
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(BorderStyle_Set_TestData))]
        public void UpDownBase_BorderStyle_Set_GetReturnsExpected(BorderStyle value, Size expectedPreferredSize)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = value
            };
            Assert.Equal(value, control.BorderStyle);
            Assert.Equal(expectedPreferredSize.Height, control.PreferredHeight);
            Assert.Equal(expectedPreferredSize, control.PreferredSize);
            Assert.False(control.IsHandleCreated);

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

        public static IEnumerable<object[]> BorderStyle_SetWithHandle_TestData()
        {
            if (Application.UseVisualStyles)
            {
                yield return new object[] { BorderStyle.Fixed3D, 0, 0, new Size(122, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.FixedSingle, 0, 1, new Size(122, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.None, 1, 1, new Size(123, Control.DefaultFont.Height + 3) };
            }
            else
            {
                yield return new object[] { BorderStyle.Fixed3D, 0, 0, new Size(123, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.FixedSingle, 1, 1, new Size(123, Control.DefaultFont.Height + SystemInformation.BorderSize.Height * 4 + 3) };
                yield return new object[] { BorderStyle.None, 2, 1, new Size(123, Control.DefaultFont.Height + 3) };
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(BorderStyle_SetWithHandle_TestData))]
        public void UpDownBase_BorderStyle_SetWithHandle_GetReturnsExpected(BorderStyle value, int expectedInvalidatedCallCount, int expectedCreatedCallCount, Size expectedPreferredSize)
        {
            using var control = new SubUpDownBase();
            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.Equal(expectedPreferredSize.Height, control.PreferredHeight);
            Assert.Equal(expectedPreferredSize, control.PreferredSize);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(expectedCreatedCallCount, createdCallCount);

            // Set same.
            control.BorderStyle = value;
            Assert.Equal(value, control.BorderStyle);
            Assert.Equal(expectedPreferredSize.Height, control.PreferredHeight);
            Assert.Equal(expectedPreferredSize, control.PreferredSize);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(expectedCreatedCallCount, createdCallCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryDataInvalid), typeof(BorderStyle))]
        public void UpDownBase_BorderStyle_SetInvalid_ThrowsInvalidEnumArgumentException(BorderStyle value)
        {
            using var control = new SubUpDownBase();
            Assert.Throws<InvalidEnumArgumentException>("value", () => control.BorderStyle = value);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_ChangingText_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase
            {
                ChangingText = value
            };
            Assert.Equal(value, control.ChangingText);
            Assert.False(control.IsHandleCreated);

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

            // Set different.
            control.ChangingText = !value;
            Assert.Equal(!value, control.ChangingText);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_ChangingText_SetWithHandle_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            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.ChangingText = value;
            Assert.Equal(value, control.ChangingText);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.ChangingText = value;
            Assert.Equal(value, control.ChangingText);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set different.
            control.ChangingText = !value;
            Assert.Equal(!value, control.ChangingText);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

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

        [WinFormsTheory]
        [MemberData(nameof(ContextMenuStrip_Set_TestData))]
        public void UpDownBase_ContextMenuStrip_Set_GetReturnsExpected(ContextMenuStrip value)
        {
            using var control = new SubUpDownBase
            {
                ContextMenuStrip = value
            };
            Assert.Same(value, control.ContextMenuStrip);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.ContextMenuStrip = value;
            Assert.Same(value, control.ContextMenuStrip);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_ContextMenuStrip_SetWithHandler_CallsContextMenuStripChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            control.ContextMenuStripChanged += handler;

            // Set different.
            using var menu1 = new ContextMenuStrip();
            control.ContextMenuStrip = menu1;
            Assert.Same(menu1, control.ContextMenuStrip);
            Assert.Equal(1, callCount);

            // Set same.
            control.ContextMenuStrip = menu1;
            Assert.Same(menu1, control.ContextMenuStrip);
            Assert.Equal(1, callCount);

            // Set different.
            using var menu2 = new ContextMenuStrip();
            control.ContextMenuStrip = menu2;
            Assert.Same(menu2, control.ContextMenuStrip);
            Assert.Equal(2, callCount);

            // Set null.
            control.ContextMenuStrip = null;
            Assert.Null(control.ContextMenuStrip);
            Assert.Equal(3, callCount);

            // Remove handler.
            control.ContextMenuStripChanged -= handler;
            control.ContextMenuStrip = menu1;
            Assert.Same(menu1, control.ContextMenuStrip);
            Assert.Equal(3, callCount);
        }

        public static IEnumerable<object[]> ForeColor_Set_TestData()
        {
            yield return new object[] { Color.Empty, SystemColors.WindowText };
            yield return new object[] { Color.FromArgb(254, 1, 2, 3), Color.FromArgb(254, 1, 2, 3) };
            yield return new object[] { Color.White, Color.White };
            yield return new object[] { Color.Black, Color.Black };
            yield return new object[] { Color.Red, Color.Red };
        }

        [WinFormsTheory]
        [MemberData(nameof(ForeColor_Set_TestData))]
        public void UpDownBase_ForeColor_Set_GetReturnsExpected(Color value, Color expected)
        {
            using var control = new SubUpDownBase
            {
                ForeColor = value
            };
            Assert.Equal(expected, control.ForeColor);
            Assert.False(control.IsHandleCreated);

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

        [WinFormsTheory]
        [MemberData(nameof(ForeColor_Set_TestData))]
        public void UpDownBase_ForeColor_SetWithHandle_GetReturnsExpected(Color value, Color expected)
        {
            using var control = new SubUpDownBase();
            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.ForeColor = value;
            Assert.Equal(expected, control.ForeColor);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.ForeColor = value;
            Assert.Equal(expected, control.ForeColor);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsFact]
        public void UpDownBase_ForeColor_SetWithHandler_CallsForeColorChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            control.ForeColorChanged += handler;

            // Set different.
            control.ForeColor = Color.Red;
            Assert.Equal(Color.Red, control.ForeColor);
            Assert.Equal(0, callCount);

            // Set same.
            control.ForeColor = Color.Red;
            Assert.Equal(Color.Red, control.ForeColor);
            Assert.Equal(0, callCount);

            // Set different.
            control.ForeColor = Color.Empty;
            Assert.Equal(SystemColors.WindowText, control.ForeColor);
            Assert.Equal(0, callCount);

            // Remove handler.
            control.ForeColorChanged -= handler;
            control.ForeColor = Color.Red;
            Assert.Equal(Color.Red, control.ForeColor);
            Assert.Equal(0, callCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_InterceptArrowKeys_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase
            {
                InterceptArrowKeys = value
            };
            Assert.Equal(value, control.InterceptArrowKeys);
            Assert.False(control.IsHandleCreated);

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

            // Set different.
            control.InterceptArrowKeys = !value;
            Assert.Equal(!value, control.InterceptArrowKeys);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_InterceptArrowKeys_SetWithHandle_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            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.InterceptArrowKeys = value;
            Assert.Equal(value, control.InterceptArrowKeys);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.InterceptArrowKeys = value;
            Assert.Equal(value, control.InterceptArrowKeys);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set different.
            control.InterceptArrowKeys = !value;
            Assert.Equal(!value, control.InterceptArrowKeys);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> MaximumSize_Set_TestData()
        {
            yield return new object[] { Size.Empty, 120, 0 };
            yield return new object[] { new Size(-1, -2), 0, 1 };
            yield return new object[] { new Size(0, 1), 120, 0 };
            yield return new object[] { new Size(0, 10), 120, 0 };
            yield return new object[] { new Size(1, 0), 1, 1 };
            yield return new object[] { new Size(10, 0), 10, 1 };
            yield return new object[] { new Size(1, 2), 1, 1 };
            yield return new object[] { new Size(3, 4), 3, 1 };
            yield return new object[] { new Size(ushort.MaxValue - 1, ushort.MaxValue - 1), 120, 0 };
            yield return new object[] { new Size(ushort.MaxValue, ushort.MaxValue), 120, 0 };
            yield return new object[] { new Size(ushort.MaxValue + 1, ushort.MaxValue + 1), 120, 0 };
            yield return new object[] { new Size(int.MaxValue, int.MaxValue), 120, 0 };
        }

        [WinFormsTheory]
        [MemberData(nameof(MaximumSize_Set_TestData))]
        public void UpDownBase_MaximumSize_Set_GetReturnsExpected(Size value, int expectedWidth, int expectedLayoutCallCount)
        {
            using var control = new SubUpDownBase();
            int layoutCallCount = 0;
            control.Layout += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(control, e.AffectedControl);
                Assert.Equal("Bounds", e.AffectedProperty);
                layoutCallCount++;
            };

            control.MaximumSize = value;
            Assert.Equal(new Size(value.Width, 0), control.MaximumSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.Size);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.MaximumSize = value;
            Assert.Equal(new Size(value.Width, 0), control.MaximumSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.Size);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }

        public static IEnumerable<object[]> MinimumSize_Set_TestData()
        {
            yield return new object[] { Size.Empty, 120, 0 };
            yield return new object[] { new Size(0, 1), 120, 0 };
            yield return new object[] { new Size(0, 10), 120, 0 };
            yield return new object[] { new Size(1, 0), 120, 0 };
            yield return new object[] { new Size(10, 0), 120, 0 };
            yield return new object[] { new Size(-1, -2), 120, 0 };
            yield return new object[] { new Size(1, 2), 120, 0 };
            yield return new object[] { new Size(3, 4), 120, 0 };
            yield return new object[] { new Size(ushort.MaxValue - 1, ushort.MaxValue - 1), ushort.MaxValue - 1, 1 };
            yield return new object[] { new Size(ushort.MaxValue, ushort.MaxValue), ushort.MaxValue, 1 };
            yield return new object[] { new Size(ushort.MaxValue + 1, ushort.MaxValue + 1), ushort.MaxValue + 1, 1 };
            yield return new object[] { new Size(int.MaxValue, int.MaxValue), int.MaxValue, 1 };
        }

        [WinFormsTheory]
        [MemberData(nameof(MinimumSize_Set_TestData))]
        public void UpDownBase_MinimumSize_Set_GetReturnsExpected(Size value, int expectedWidth, int expectedLayoutCallCount)
        {
            using var control = new SubUpDownBase();
            int layoutCallCount = 0;
            control.Layout += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(control, e.AffectedControl);
                Assert.Equal("Bounds", e.AffectedProperty);
                layoutCallCount++;
            };

            control.MinimumSize = value;
            Assert.Equal(new Size(value.Width, 0), control.MinimumSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.Size);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.False(control.IsHandleCreated);

            // Set same.
            control.MinimumSize = value;
            Assert.Equal(new Size(value.Width, 0), control.MinimumSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.Size);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_ReadOnly_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase
            {
                ReadOnly = value
            };
            Assert.Equal(value, control.ReadOnly);
            Assert.False(control.IsHandleCreated);

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

            // Set different.
            control.ReadOnly = !value;
            Assert.Equal(!value, control.ReadOnly);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_ReadOnly_SetWithHandle_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            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.ReadOnly = value;
            Assert.Equal(value, control.ReadOnly);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.ReadOnly = value;
            Assert.Equal(value, control.ReadOnly);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set different.
            control.ReadOnly = !value;
            Assert.Equal(!value, control.ReadOnly);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> Text_Set_TestData()
        {
            foreach (bool changingText in new bool[] { true, false })
            {
                yield return new object[] { changingText, true, null, string.Empty, 1, 0, true };
                yield return new object[] { changingText, false, null, string.Empty, 0, 0, false };
                yield return new object[] { changingText, true, string.Empty, string.Empty, 1, 0, true };
                yield return new object[] { changingText, false, string.Empty, string.Empty, 0, 0, false };
            }

            yield return new object[] { true, true, "text", "text", 1, 1, true };
            yield return new object[] { false, true, "text", "text", 1, 1, true };
            yield return new object[] { true, false, "text", "text", 0, 1, false };
            yield return new object[] { false, false, "text", "text", 1, 1, true };
        }

        [WinFormsTheory]
        [MemberData(nameof(Text_Set_TestData))]
        public void UpDownBase_Text_Set_GetReturnsExpected(bool changingText, bool userEdit, string value, string expected, int expectedValidateEditTextCallCount, int expectedOnChangedCallCount, bool expectedUserEdit)
        {
            using (new NoAssertContext())
            {
                int validateEditTextCallCount = 0;
                int onChangedCallCount = 0;
                using var control = new CustomValidateUpDownBase
                {
                    ChangingText = changingText,
                    UserEdit = userEdit,
                    ValidateEditTextAction = () => validateEditTextCallCount++
                };
                control.OnChangedAction = (source, e) =>
                {
                    Assert.Same(control, ((Control)source).Parent);
                    Assert.Same(EventArgs.Empty, e);
                    onChangedCallCount++;
                };

                control.Text = value;
                Assert.Equal(expected, control.Text);
                Assert.False(control.ChangingText);
                Assert.Equal(expectedUserEdit, control.UserEdit);
                Assert.Equal(expectedValidateEditTextCallCount, validateEditTextCallCount);
                Assert.Equal(expectedOnChangedCallCount, onChangedCallCount);
                Assert.False(control.IsHandleCreated);

                // Set same.
                control.Text = value;
                Assert.Equal(expected, control.Text);
                Assert.False(control.ChangingText);
                Assert.Equal(expectedUserEdit, control.UserEdit);
                Assert.Equal(expectedValidateEditTextCallCount * 2, validateEditTextCallCount);
                Assert.Equal(expectedOnChangedCallCount, onChangedCallCount);
                Assert.False(control.IsHandleCreated);
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(Text_Set_TestData))]
        public void UpDownBase_Text_SetWithHandle_GetReturnsExpected(bool changingText, bool userEdit, string value, string expected, int expectedValidateEditTextCallCount, int expectedOnChangedCallCount, bool expectedUserEdit)
        {
            using (new NoAssertContext())
            {
                int validateEditTextCallCount = 0;
                int onChangedCallCount = 0;
                using var control = new CustomValidateUpDownBase
                {
                    ChangingText = changingText,
                    UserEdit = userEdit,
                    ValidateEditTextAction = () => validateEditTextCallCount++
                };
                control.OnChangedAction = (source, e) =>
                {
                    Assert.Same(control, ((Control)source).Parent);
                    Assert.Same(EventArgs.Empty, e);
                    onChangedCallCount++;
                };
                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.Text = value;
                Assert.Equal(expected, control.Text);
                Assert.False(control.ChangingText);
                Assert.Equal(expectedUserEdit, control.UserEdit);
                Assert.Equal(expectedValidateEditTextCallCount, validateEditTextCallCount);
                Assert.Equal(expectedOnChangedCallCount, onChangedCallCount);
                Assert.True(control.IsHandleCreated);
                Assert.Equal(0, invalidatedCallCount);
                Assert.Equal(0, styleChangedCallCount);
                Assert.Equal(0, createdCallCount);

                // Set same.
                control.Text = value;
                Assert.Equal(expected, control.Text);
                Assert.False(control.ChangingText);
                Assert.Equal(expectedUserEdit, control.UserEdit);
                Assert.Equal(expectedValidateEditTextCallCount * 2, validateEditTextCallCount);
                Assert.Equal(expectedOnChangedCallCount, onChangedCallCount);
                Assert.True(control.IsHandleCreated);
                Assert.Equal(0, invalidatedCallCount);
                Assert.Equal(0, styleChangedCallCount);
                Assert.Equal(0, createdCallCount);
            }
        }

        [WinFormsFact]
        public void UpDownBase_Text_SetWithHandler_CallsTextChanged()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Equal(EventArgs.Empty, e);
                callCount++;
            };
            control.TextChanged += handler;

            // Set different.
            control.Text = "text";
            Assert.Equal("text", control.Text);
            Assert.Equal(1, callCount);

            // Set same.
            control.Text = "text";
            Assert.Equal("text", control.Text);
            Assert.Equal(1, callCount);

            // Set different.
            control.Text = null;
            Assert.Empty(control.Text);
            Assert.Equal(2, callCount);

            // Remove handler.
            control.TextChanged -= handler;
            control.Text = "text";
            Assert.Equal("text", control.Text);
            Assert.Equal(2, callCount);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryData), typeof(HorizontalAlignment))]
        public void UpDownBase_TextAlign_Set_GetReturnsExpected(HorizontalAlignment value)
        {
            using var control = new SubUpDownBase
            {
                TextAlign = value
            };
            Assert.Equal(value, control.TextAlign);
            Assert.False(control.IsHandleCreated);

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryData), typeof(HorizontalAlignment))]
        public void UpDownBase_TextAlign_SetWithHandle_GetReturnsExpected(HorizontalAlignment value)
        {
            using var control = new SubUpDownBase();
            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.TextAlign = value;
            Assert.Equal(value, control.TextAlign);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryDataInvalid), typeof(HorizontalAlignment))]
        public void UpDownBase_TextAlign_SetInvalidValue_ThrowsInvalidEnumArgumentException(HorizontalAlignment value)
        {
            var control = new SubUpDownBase();
            Assert.Throws<InvalidEnumArgumentException>("value", () => control.TextAlign = value);
        }

        public static IEnumerable<object[]> UpDownAlign_Set_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    yield return new object[] { borderStyle, rightToLeft, LeftRightAlignment.Left };
                    yield return new object[] { borderStyle, rightToLeft, LeftRightAlignment.Right };
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(UpDownAlign_Set_TestData))]
        public void UpDownBase_UpDownAlign_Set_GetReturnsExpected(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment value)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = value
            };
            Assert.Equal(value, control.UpDownAlign);
            Assert.False(control.IsHandleCreated);

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

        public static IEnumerable<object[]> UpDownAlign_SetWithHandle_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    yield return new object[] { borderStyle, rightToLeft, LeftRightAlignment.Left, 1 };
                    yield return new object[] { borderStyle, rightToLeft, LeftRightAlignment.Right, 0 };
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(UpDownAlign_SetWithHandle_TestData))]
        public void UpDownBase_UpDownAlign_SetWithHandle_GetReturnsExpected(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment value, int expectedInvalidatedCallCount)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft
            };
            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.UpDownAlign = value;
            Assert.Equal(value, control.UpDownAlign);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEnumTypeTheoryDataInvalid), typeof(LeftRightAlignment))]
        public void UpDownBase_UpDownAlign_SetInvalidValue_ThrowsInvalidEnumArgumentException(LeftRightAlignment value)
        {
            var control = new SubUpDownBase();
            Assert.Throws<InvalidEnumArgumentException>("value", () => control.UpDownAlign = value);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_UserEdit_Set_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase
            {
                UserEdit = value
            };
            Assert.Equal(value, control.UserEdit);
            Assert.False(control.IsHandleCreated);

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

            // Set different.
            control.UserEdit = !value;
            Assert.Equal(!value, control.UserEdit);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_UserEdit_SetWithHandle_GetReturnsExpected(bool value)
        {
            using var control = new SubUpDownBase();
            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.UserEdit = value;
            Assert.Equal(value, control.UserEdit);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set same.
            control.UserEdit = value;
            Assert.Equal(value, control.UserEdit);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Set different.
            control.UserEdit = !value;
            Assert.Equal(!value, control.UserEdit);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

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

        public static IEnumerable<object[]> GetPreferredSize_TestData()
        {
            yield return new object[] { Size.Empty };
            yield return new object[] { new Size(-1, -2) };
            yield return new object[] { new Size(10, 20) };
            yield return new object[] { new Size(30, 40) };
            yield return new object[] { new Size(int.MaxValue, int.MaxValue) };
        }

        [WinFormsTheory]
        [MemberData(nameof(GetPreferredSize_TestData))]
        public void UpDownBase_GetPreferredSize_Invoke_ReturnsExpected(Size proposedSize)
        {
            using var control = new SubUpDownBase();

            int expectedWidth = Application.UseVisualStyles ? 122 : 123;
            Size preferredSize = control.GetPreferredSize(proposedSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), preferredSize);

            // Call again.
            preferredSize = control.GetPreferredSize(proposedSize);
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), preferredSize);

            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [MemberData(nameof(GetPreferredSize_TestData))]
        public void UpDownBase_GetPreferredSize_InvokeWithBounds_ReturnsExpected(Size proposedSize)
        {
            using var control = new SubUpDownBase
            {
                Bounds = new Rectangle(1, 2, 30, 40)
            };

            int expectedWidth = Application.UseVisualStyles ? 32 : 33;

            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.GetPreferredSize(proposedSize));
            Assert.False(control.IsHandleCreated);

            // Call again.
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.GetPreferredSize(proposedSize));
            Assert.False(control.IsHandleCreated);
        }

        public static IEnumerable<object[]> GetPreferredSize_WithConstrainedSize_TestData()
        {
            int expectedWidth = Application.UseVisualStyles ? 122 : 123;

            yield return new object[] { Size.Empty, Size.Empty, new Size(30, 40), expectedWidth };
            yield return new object[] { new Size(10, 20), Size.Empty, new Size(30, 40), expectedWidth };
            yield return new object[] { new Size(30, 40), Size.Empty, new Size(30, 40), expectedWidth };
            yield return new object[] { new Size(31, 40), Size.Empty, new Size(30, 40), expectedWidth };
            yield return new object[] { new Size(30, 41), Size.Empty, new Size(30, 40), expectedWidth };
            yield return new object[] { new Size(40, 50), Size.Empty, new Size(30, 40), expectedWidth };

            yield return new object[] { Size.Empty, new Size(20, 10), new Size(30, 40), 20 };
            yield return new object[] { Size.Empty, new Size(30, 40), new Size(30, 40), 30 };
            yield return new object[] { Size.Empty, new Size(31, 40), new Size(30, 40), 31 };
            yield return new object[] { Size.Empty, new Size(30, 41), new Size(30, 40), 30 };
            yield return new object[] { Size.Empty, new Size(40, 50), new Size(30, 40), 40 };
            yield return new object[] { new Size(10, 20), new Size(40, 50), new Size(30, 40), 40 };
            yield return new object[] { new Size(10, 20), new Size(40, 50), new Size(int.MaxValue, int.MaxValue), 40 };
            yield return new object[] { new Size(10, 20), new Size(20, 30), new Size(30, 40), 20 };
            yield return new object[] { new Size(10, 20), new Size(20, 30), new Size(30, 40), 20 };
            yield return new object[] { new Size(30, 40), new Size(20, 30), new Size(30, 40), 30 };
            yield return new object[] { new Size(30, 40), new Size(40, 50), new Size(30, 40), 40 };
            yield return new object[] { new Size(40, 50), new Size(20, 30), new Size(30, 40), 40 };
            yield return new object[] { new Size(40, 50), new Size(40, 50), new Size(30, 40), 40 };
        }

        [WinFormsTheory]
        [MemberData(nameof(GetPreferredSize_WithConstrainedSize_TestData))]
        public void UpDownBase_GetPreferredSize_InvokeWithConstrainedSize_ReturnsExpected(Size minimumSize, Size maximumSize, Size proposedSize, int expectedWidth)
        {
            using var control = new SubUpDownBase
            {
                MinimumSize = minimumSize,
                MaximumSize = maximumSize,
            };
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.GetPreferredSize(proposedSize));
            Assert.False(control.IsHandleCreated);

            // Call again.
            Assert.Equal(new Size(expectedWidth, control.PreferredHeight), control.GetPreferredSize(proposedSize));
            Assert.False(control.IsHandleCreated);
        }

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

        [WinFormsTheory]
        [InlineData(ControlStyles.ContainerControl, true)]
        [InlineData(ControlStyles.UserPaint, true)]
        [InlineData(ControlStyles.Opaque, true)]
        [InlineData(ControlStyles.ResizeRedraw, true)]
        [InlineData(ControlStyles.FixedWidth, false)]
        [InlineData(ControlStyles.FixedHeight, true)]
        [InlineData(ControlStyles.StandardClick, false)]
        [InlineData(ControlStyles.Selectable, true)]
        [InlineData(ControlStyles.UserMouse, false)]
        [InlineData(ControlStyles.SupportsTransparentBackColor, false)]
        [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, false)]
        [InlineData((ControlStyles)0, true)]
        [InlineData((ControlStyles)int.MaxValue, false)]
        [InlineData((ControlStyles)(-1), false)]
        public void UpDownBase_GetStyle_Invoke_ReturnsExpected(ControlStyles flag, bool expected)
        {
            using var control = new SubUpDownBase();
            Assert.Equal(expected, control.GetStyle(flag));

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

        [WinFormsFact]
        public void UpDownBase_GetTopLevel_Invoke_ReturnsExpected()
        {
            using var control = new SubUpDownBase();
            Assert.False(control.GetTopLevel());
        }

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

        [WinFormsTheory]
        [MemberData(nameof(OnChanged_TestData))]
        public void UpDownBase_OnChanged_Invoke_Nop(object source, EventArgs e)
        {
            using var control = new SubUpDownBase();
            control.OnChanged(source, e);
            Assert.False(control.IsHandleCreated);

            // Call again.
            control.OnChanged(source, e);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [MemberData(nameof(OnChanged_TestData))]
        public void UpDownBase_OnChanged_InvokeWithHandle_Nop(object source, EventArgs e)
        {
            using var control = new SubUpDownBase();
            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.OnChanged(source, e);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Call again.
            control.OnChanged(source, e);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> OnFontChanged_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    foreach (LeftRightAlignment upDownAlign in Enum.GetValues(typeof(LeftRightAlignment)))
                    {
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, null };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new EventArgs() };
                    }
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnFontChanged_TestData))]
        public void UpDownBase_OnFontChanged_Invoke_CallsFontChanged(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment upDownAlign, EventArgs eventArgs)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = upDownAlign
            };
            int preferredHeight = control.PreferredHeight;

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

            // Call with handler.
            control.FontChanged += handler;
            control.OnFontChanged(eventArgs);
            Assert.Equal(preferredHeight, control.Height);
            Assert.Equal(1, callCount);
            Assert.False(control.IsHandleCreated);

            // Remove handler.
            control.FontChanged -= handler;
            control.OnFontChanged(eventArgs);
            Assert.Equal(preferredHeight, control.Height);
            Assert.Equal(1, callCount);
            Assert.False(control.IsHandleCreated);
        }

        public static IEnumerable<object[]> OnHandleCreated_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    foreach (LeftRightAlignment upDownAlign in Enum.GetValues(typeof(LeftRightAlignment)))
                    {
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, null };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new EventArgs() };
                    }
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnHandleCreated_TestData))]
        public void UpDownBase_OnHandleCreated_Invoke_CallsHandleCreated(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment upDownAlign, EventArgs eventArgs)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = upDownAlign
            };
            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.False(control.Created);
            Assert.False(control.IsHandleCreated);

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

        [WinFormsTheory]
        [MemberData(nameof(OnHandleCreated_TestData))]
        public void UpDownBase_OnHandleCreated_InvokeWithHandle_CallsHandleCreated(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment upDownAlign, EventArgs eventArgs)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = upDownAlign
            };
            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.Created);
            Assert.True(control.IsHandleCreated);

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void UpDownBase_OnHandleDestroyed_Invoke_CallsHandleDestroyed(EventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            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.Created);
            Assert.False(control.IsHandleCreated);

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void UpDownBase_OnHandleDestroyed_InvokeWithHandle_CallsHandleDestroyed(EventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            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.Created);
            Assert.True(control.IsHandleCreated);

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

        public static IEnumerable<object[]> OnLayout_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    foreach (LeftRightAlignment upDownAlign in Enum.GetValues(typeof(LeftRightAlignment)))
                    {
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, null };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new LayoutEventArgs(null, null) };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new LayoutEventArgs(new Control(), "affectedProperty") };
                    }
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnLayout_TestData))]
        public void UpDownBase_OnLayout_Invoke_CallsLayout(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment upDownAlign, LayoutEventArgs eventArgs)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = upDownAlign
            };
            int callCount = 0;
            LayoutEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                callCount++;
            };

            // Call with handler.
            control.Layout += handler;
            control.OnLayout(eventArgs);
            Assert.NotEqual(0, callCount);
            Assert.False(control.IsHandleCreated);

            // Remove handler.
            control.Layout -= handler;
            control.OnLayout(eventArgs);
            Assert.NotEqual(0, callCount);
            Assert.False(control.IsHandleCreated);
        }

        public static IEnumerable<object[]> MouseEventArgs_TestData()
        {
            yield return new object[] { new MouseEventArgs(MouseButtons.None, 0, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Left, 0, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Right, 0, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Right, 1, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Left, 2, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Right, 2, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Left, 3, 0, 0, 0) };
            yield return new object[] { new MouseEventArgs(MouseButtons.Right, 3, 0, 0, 0) };
        }

        [WinFormsTheory]
        [MemberData(nameof(MouseEventArgs_TestData))]
        public void UpDownBase_OnMouseDown_Invoke_CallsMouseDown(MouseEventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            MouseEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsFact]
        public void UpDownBase_OnMouseDown_NullE_ThrowsNullReferenceException()
        {
            using var control = new SubUpDownBase();
            Assert.Throws<NullReferenceException>(() => control.OnMouseDown(null));
        }

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void UpDownBase_OnMouseEnter_Invoke_CallsMouseEnter(EventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void UpDownSubUpDownBase_OnMouseHover_Invoke_CallsMouseHover(EventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetEventArgsTheoryData))]
        public void UpDownBase_OnMouseLeave_Invoke_CallsMouseLeave(EventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            EventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetMouseEventArgsTheoryData))]
        public void UpDownBase_OnMouseMove_Invoke_CallsMouseMove(MouseEventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            MouseEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [MemberData(nameof(MouseEventArgs_TestData))]
        public void UpUpBase_OnMouseUp_Invoke_CallsMouseUp(MouseEventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            MouseEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsFact]
        public void UpDownBase_OnMouseUp_NullE_ThrowsNullReferenceException()
        {
            using var control = new SubUpDownBase();
            Assert.Throws<NullReferenceException>(() => control.OnMouseUp(null));
        }

        [WinFormsTheory]
        [MemberData(nameof(MouseEventArgs_TestData))]
        public void UpDownBase_OnMouseWheel_Invoke_CallsMouseWheel(MouseEventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            MouseEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [CommonMemberData(nameof(CommonTestHelper.GetBoolTheoryData))]
        public void UpDownBase_OnMouseWheel_InvokeHandledMouseEventArgs_SetsHandled(bool handled)
        {
            using var control = new SubUpDownBase();
            var eventArgs = new HandledMouseEventArgs(MouseButtons.Left, 1, 2, 3, 4, handled);
            int callCount = 0;
            MouseEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                Assert.Equal(handled, eventArgs.Handled);
                callCount++;
            };
            control.MouseWheel += handler;

            control.OnMouseWheel(eventArgs);
            Assert.Equal(1, callCount);
            Assert.True(eventArgs.Handled);
        }

        [WinFormsFact]
        public void UpDownBase_OnMouseWheel_NullE_ThrowsNullReferenceException()
        {
            using var control = new SubUpDownBase();
            Assert.Throws<NullReferenceException>(() => control.OnMouseWheel(null));
        }

        public static IEnumerable<object[]> OnPaint_TestData()
        {
            foreach (bool enabled in new bool[] { true, false })
            {
                foreach (BorderStyle borderStlye in Enum.GetValues(typeof(BorderStyle)))
                {
                    foreach (Color backColor in new Color[] { Color.Red, Color.Empty })
                    {
                        yield return new object[] { new Size(100, 200), enabled, borderStlye, backColor };
                        yield return new object[] { new Size(10, 10), enabled, borderStlye, backColor };
                        yield return new object[] { new Size(9, 10), enabled, borderStlye, backColor };
                        yield return new object[] { new Size(10, 9), enabled, borderStlye, backColor };
                        yield return new object[] { new Size(9, 9), enabled, borderStlye, backColor };
                    }
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnPaint_TestData))]
        public void UpDownBase_OnPaint_Invoke_CallsPaint(Size size, bool enabled, BorderStyle borderStlye, Color backColor)
        {
            using var image = new Bitmap(10, 10);
            using Graphics graphics = Graphics.FromImage(image);
            var eventArgs = new PaintEventArgs(graphics, Rectangle.Empty);

            using var control = new SubUpDownBase
            {
                Size = size,
                Enabled = enabled,
                BorderStyle = borderStlye,
                BackColor = backColor
            };
            int callCount = 0;
            PaintEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsTheory]
        [MemberData(nameof(OnPaint_TestData))]
        public void UpDownBase_OnPaint_InvokeWithHandle_CallsPaint(Size size, bool enabled, BorderStyle borderStlye, Color backColor)
        {
            using var image = new Bitmap(10, 10);
            using Graphics graphics = Graphics.FromImage(image);
            var eventArgs = new PaintEventArgs(graphics, Rectangle.Empty);

            using var control = new SubUpDownBase
            {
                Size = size,
                Enabled = enabled,
                BorderStyle = borderStlye,
                BackColor = backColor
            };
            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;
            PaintEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

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

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

        [WinFormsFact]
        public void UpDownBase_OnPaint_VisualStyles_on_NullE_ThrowsNullReferenceException()
        {
            if (!Application.RenderWithVisualStyles)
            {
                return;
            }

            using var control = new SubUpDownBase();
            Assert.Throws<NullReferenceException>(() => control.OnPaint(null));
        }

        [WinFormsFact]
        public void UpDownBase_OnPaint_VisualStyles_off_NullE_ThrowsArgumentNullException()
        {
            if (Application.RenderWithVisualStyles)
            {
                return;
            }

            using var control = new SubUpDownBase();
            Assert.Throws<ArgumentNullException>(() => control.OnPaint(null));
        }

        public static IEnumerable<object[]> OnTextBoxKeyDown_TestData()
        {
            foreach (object source in new object[] { null, new object() })
            {
                foreach (bool userEdit in new bool[] { true, false })
                {
                    yield return new object[] { true, userEdit, source, new KeyEventArgs(Keys.A), 0, 0, 0, false };
                    yield return new object[] { false, userEdit, source, new KeyEventArgs(Keys.A), 0, 0, 0, false };
                    yield return new object[] { true, userEdit, source, new KeyEventArgs(Keys.Up), 1, 0, 0, true };
                    yield return new object[] { false, userEdit, source, new KeyEventArgs(Keys.Up), 0, 0, 0, false };
                    yield return new object[] { true, userEdit, source, new KeyEventArgs(Keys.Down), 0, 1, 0, true };
                    yield return new object[] { false, userEdit, source, new KeyEventArgs(Keys.Down), 0, 0, 0, false };
                    yield return new object[] { true, userEdit, source, new KeyEventArgs(Keys.Left), 0, 0, 0, false };
                    yield return new object[] { false, userEdit, source, new KeyEventArgs(Keys.Left), 0, 0, 0, false };
                    yield return new object[] { true, userEdit, source, new KeyEventArgs(Keys.Right), 0, 0, 0, false };
                    yield return new object[] { false, userEdit, source, new KeyEventArgs(Keys.Right), 0, 0, 0, false };
                }

                foreach (bool interceptArrowKeys in new bool[] { true, false })
                {
                    yield return new object[] { interceptArrowKeys, true, source, new KeyEventArgs(Keys.Return), 0, 0, 1, false };
                    yield return new object[] { interceptArrowKeys, false, source, new KeyEventArgs(Keys.Return), 0, 0, 0, false };
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnTextBoxKeyDown_TestData))]
        public void UpDownBase_OnTextBoxKeyDown_Invoke_CallsKeyDown(bool interceptArrowKeys, bool userEdit, object source, KeyEventArgs eventArgs, int expectedUpButtonCallCount, int expectedDownButtonCallCount, int expectedValidateEditTextCallCount, bool expectedHandled)
        {
            int upButtonCallCount = 0;
            int downButtonCallCount = 0;
            int validateEditTextCallCount = 0;
            using var control = new CustomValidateUpDownBase
            {
                InterceptArrowKeys = interceptArrowKeys,
                UserEdit = userEdit,
                UpButtonAction = () => upButtonCallCount++,
                DownButtonAction = () => downButtonCallCount++,
                ValidateEditTextAction = () => validateEditTextCallCount++
            };
            int callCount = 0;
            KeyEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

            // Call with handler.
            control.KeyDown += handler;
            control.OnTextBoxKeyDown(source, eventArgs);
            Assert.Equal(expectedUpButtonCallCount, upButtonCallCount);
            Assert.Equal(expectedDownButtonCallCount, downButtonCallCount);
            Assert.Equal(expectedValidateEditTextCallCount, validateEditTextCallCount);
            Assert.Equal(expectedHandled, eventArgs.Handled);
            Assert.Equal(1, callCount);

            // Remove handler.
            control.KeyDown -= handler;
            control.OnTextBoxKeyDown(source, eventArgs);
            Assert.Equal(expectedUpButtonCallCount * 2, upButtonCallCount);
            Assert.Equal(expectedDownButtonCallCount * 2, downButtonCallCount);
            Assert.Equal(expectedValidateEditTextCallCount * 2, validateEditTextCallCount);
            Assert.Equal(expectedHandled, eventArgs.Handled);
            Assert.Equal(1, callCount);
        }

        [WinFormsFact]
        public void UpDownBase_OnTextBoxKeyDown_NullE_ThrowsNullReferenceException()
        {
            using var control = new SubUpDownBase();
            Assert.Throws<NullReferenceException>(() => control.OnTextBoxKeyDown(new object(), null));
        }

        public static IEnumerable<object[]> OnTextBoxKeyPress_TestData()
        {
            yield return new object[] { null, null };
            yield return new object[] { null, null };
            yield return new object[] { null, new KeyPressEventArgs('a') };
            yield return new object[] { null, new KeyPressEventArgs('a') };
        }

        [WinFormsTheory]
        [MemberData(nameof(OnTextBoxKeyPress_TestData))]
        public void UpPressBase_OnTextBoxKeyPress_Invoke_CallsKeyPress(object source, KeyPressEventArgs eventArgs)
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            KeyPressEventHandler handler = (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(eventArgs, e);
                callCount++;
            };

            // Call with handler.
            control.KeyPress += handler;
            control.OnTextBoxKeyPress(source, eventArgs);
            Assert.False(eventArgs?.Handled ?? false);
            Assert.Equal(1, callCount);

            // Remove handler.
            control.KeyPress -= handler;
            control.OnTextBoxKeyPress(source, eventArgs);
            Assert.False(eventArgs?.Handled ?? false);
            Assert.Equal(1, callCount);
        }

        public static IEnumerable<object[]> OnTextBoxLostFocus_TestData()
        {
            yield return new object[] { true, null, null, 1 };
            yield return new object[] { true, null, null, 1 };
            yield return new object[] { true, null, new EventArgs(), 1 };
            yield return new object[] { true, null, new EventArgs(), 1 };
            yield return new object[] { false, null, null, 0 };
            yield return new object[] { false, null, null, 0 };
            yield return new object[] { false, null, new EventArgs(), 0 };
            yield return new object[] { false, null, new EventArgs(), 0 };
        }

        [WinFormsTheory]
        [MemberData(nameof(OnTextBoxLostFocus_TestData))]
        public void UpPressBase_OnTextBoxLostFocus_Invoke_CallsLostFocus(bool userEdit, object source, EventArgs eventArgs, int expectedValidateEditTextCallCount)
        {
            int validateEditTextCallCount = 0;
            using var control = new CustomValidateUpDownBase
            {
                UserEdit = userEdit,
                ValidateEditTextAction = () => validateEditTextCallCount++
            };
            int callCount = 0;
            EventHandler handler = (sender, e) => callCount++;

            // Call with handler.
            control.LostFocus += handler;
            control.OnTextBoxLostFocus(source, eventArgs);
            Assert.Equal(expectedValidateEditTextCallCount, validateEditTextCallCount);
            Assert.Equal(0, callCount);

            // Remove handler.
            control.LostFocus -= handler;
            control.OnTextBoxLostFocus(source, eventArgs);
            Assert.Equal(expectedValidateEditTextCallCount * 2, validateEditTextCallCount);
            Assert.Equal(0, callCount);
        }

        public static IEnumerable<object[]> OnTextBoxResize_TestData()
        {
            foreach (BorderStyle borderStyle in Enum.GetValues(typeof(BorderStyle)))
            {
                foreach (RightToLeft rightToLeft in Enum.GetValues(typeof(RightToLeft)))
                {
                    foreach (LeftRightAlignment upDownAlign in Enum.GetValues(typeof(LeftRightAlignment)))
                    {
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, null, null };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new object(), null };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, null, new EventArgs() };
                        yield return new object[] { borderStyle, rightToLeft, upDownAlign, new object(), new EventArgs() };
                    }
                }
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnTextBoxResize_TestData))]
        public void UpDownBase_OnTextBoxResize_Invoke_CallsTextBoxResize(BorderStyle borderStyle, RightToLeft rightToLeft, LeftRightAlignment upDownAlign, object source, EventArgs eventArgs)
        {
            using var control = new SubUpDownBase
            {
                BorderStyle = borderStyle,
                RightToLeft = rightToLeft,
                UpDownAlign = upDownAlign
            };
            int preferredHeight = control.PreferredHeight;

            // Call with handler.
            control.OnTextBoxResize(source, eventArgs);
            Assert.Equal(preferredHeight, control.Height);
            Assert.False(control.IsHandleCreated);

            // Remove handler.
            control.OnTextBoxResize(source, eventArgs);
            Assert.Equal(preferredHeight, control.Height);
            Assert.False(control.IsHandleCreated);
        }

        public static IEnumerable<object[]> OnTextBoxTextChanged_TestData()
        {
            foreach (bool userEdit in new bool[] { true, false })
            {
                yield return new object[] { true, userEdit, null, null, userEdit };
                yield return new object[] { true, userEdit, null, null, userEdit };
                yield return new object[] { true, userEdit, null, new EventArgs(), userEdit };
                yield return new object[] { true, userEdit, null, new EventArgs(), userEdit };
            }

            foreach (bool userEdit in new bool[] { true, false })
            {
                yield return new object[] { false, userEdit, null, null, true };
                yield return new object[] { false, userEdit, null, null, true };
                yield return new object[] { false, userEdit, null, new EventArgs(), true };
                yield return new object[] { false, userEdit, null, new EventArgs(), true };
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(OnTextBoxTextChanged_TestData))]
        public void UpPressBase_OnTextBoxTextChanged_Invoke_CallsTextChanged(bool changingText, bool userEdit, object source, EventArgs eventArgs, bool expectedUserEdit)
        {
            using (new NoAssertContext())
            {
                using var control = new CustomValidateUpDownBase
                {
                    ChangingText = changingText,
                    UserEdit = userEdit
                };
                int onChangedCallCount = 0;
                control.OnChangedAction = (sender, e) =>
                {
                    Assert.Same(source, sender);
                    Assert.Same(EventArgs.Empty, e);
                    onChangedCallCount++;
                };
                int callCount = 0;
                EventHandler handler = (sender, e) => callCount++;

                // Call with handler.
                control.TextChanged += handler;
                control.OnTextBoxTextChanged(source, eventArgs);
                Assert.False(control.ChangingText);
                Assert.Equal(expectedUserEdit, control.UserEdit);
                Assert.Equal(1, callCount);
                Assert.Equal(1, onChangedCallCount);

                // Remove handler.
                control.TextChanged -= handler;
                control.OnTextBoxTextChanged(source, eventArgs);
                Assert.False(control.ChangingText);
                Assert.True(control.UserEdit);
                Assert.Equal(1, callCount);
                Assert.Equal(2, onChangedCallCount);
            }
        }

        [WinFormsTheory]
        [InlineData(1, 2)]
        [InlineData(0, 0)]
        [InlineData(-1, -2)]
        public void UpDownBase_RescaleConstantsForDpi_Invoke_Nop(int deviceDpiOld, int deviceDpiNew)
        {
            using var control = new SubUpDownBase();
            control.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);
            Assert.False(control.IsHandleCreated);

            // Call again.
            control.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [InlineData("", 0, 0)]
        [InlineData("", 0, 1)]
        [InlineData("tex", 0, 4)]
        [InlineData("text", 1, 2)]
        public void UpDownBase_Select_Invoke_Success(string text, int start, int length)
        {
            using var control = new SubUpDownBase
            {
                Text = text
            };
            control.Select(start, length);
            Assert.False(control.IsHandleCreated);

            // Call again.
            control.Select(start, length);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsTheory]
        [InlineData("", 0, 0)]
        [InlineData("", 0, 1)]
        [InlineData("tex", 0, 4)]
        [InlineData("text", 1, 2)]
        public void UpDownBase_Select_InvokeWithHandle_Success(string text, int start, int length)
        {
            using var control = new SubUpDownBase
            {
                Text = text
            };
            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.Select(start, length);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Call again.
            control.Select(start, length);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        public static IEnumerable<object[]> SetBoundsCore_TestData()
        {
            foreach (BoundsSpecified specified in Enum.GetValues(typeof(BoundsSpecified)))
            {
                yield return new object[] { 0, 0, 120, 0, specified, 0, 0 };
                yield return new object[] { -1, -2, -3, -4, specified, 1, 1 };
                yield return new object[] { 1, 0, 120, 0, specified, 1, 0 };
                yield return new object[] { 0, 2, 120, 0, specified, 1, 0 };
                yield return new object[] { 1, 2, 120, 0, specified, 1, 0 };
                yield return new object[] { 0, 0, 1, 0, specified, 0, 1 };
                yield return new object[] { 0, 0, 120, 2, specified, 0, 0 };
                yield return new object[] { 0, 0, 1, 2, specified, 0, 1 };
                yield return new object[] { 1, 2, 30, 40, specified, 1, 1 };
            }
        }

        [WinFormsTheory]
        [MemberData(nameof(SetBoundsCore_TestData))]
        public void UpDownBase_SetBoundsCore_Invoke_Success(int x, int y, int width, int height, BoundsSpecified specified, int expectedLocationChangedCallCount, int expectedLayoutCallCount)
        {
            using var control = new SubUpDownBase();
            int preferredHeight = control.PreferredHeight;
            int moveCallCount = 0;
            int locationChangedCallCount = 0;
            int layoutCallCount = 0;
            int resizeCallCount = 0;
            int sizeChangedCallCount = 0;
            int clientSizeChangedCallCount = 0;
            control.Move += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                Assert.Equal(locationChangedCallCount, moveCallCount);
                Assert.Equal(layoutCallCount, moveCallCount);
                Assert.Equal(resizeCallCount, moveCallCount);
                Assert.Equal(sizeChangedCallCount, moveCallCount);
                Assert.Equal(clientSizeChangedCallCount, moveCallCount);
                moveCallCount++;
            };
            control.LocationChanged += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                Assert.Equal(moveCallCount - 1, locationChangedCallCount);
                Assert.Equal(layoutCallCount, locationChangedCallCount);
                Assert.Equal(resizeCallCount, locationChangedCallCount);
                Assert.Equal(sizeChangedCallCount, locationChangedCallCount);
                Assert.Equal(clientSizeChangedCallCount, locationChangedCallCount);
                locationChangedCallCount++;
            };
            control.Layout += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(control, e.AffectedControl);
                Assert.Equal("Bounds", e.AffectedProperty);
                Assert.Equal(resizeCallCount, layoutCallCount);
                Assert.Equal(sizeChangedCallCount, layoutCallCount);
                Assert.Equal(clientSizeChangedCallCount, layoutCallCount);
                layoutCallCount++;
            };
            control.Resize += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                Assert.Equal(layoutCallCount - 1, resizeCallCount);
                Assert.Equal(sizeChangedCallCount, resizeCallCount);
                Assert.Equal(clientSizeChangedCallCount, resizeCallCount);
                resizeCallCount++;
            };
            control.SizeChanged += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                Assert.Equal(resizeCallCount - 1, sizeChangedCallCount);
                Assert.Equal(layoutCallCount - 1, sizeChangedCallCount);
                Assert.Equal(clientSizeChangedCallCount, sizeChangedCallCount);
                sizeChangedCallCount++;
            };
            control.ClientSizeChanged += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                Assert.Equal(resizeCallCount - 1, clientSizeChangedCallCount);
                Assert.Equal(layoutCallCount - 1, clientSizeChangedCallCount);
                Assert.Equal(sizeChangedCallCount - 1, clientSizeChangedCallCount);
                clientSizeChangedCallCount++;
            };

            control.SetBoundsCore(x, y, width, height, specified);

            if (Application.UseVisualStyles)
            {
                Assert.Equal(new Size(width, Control.DefaultFont.Height + 7), control.ClientSize);
                Assert.Equal(new Rectangle(0, 0, width, Control.DefaultFont.Height + 7), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, width, Control.DefaultFont.Height + 7), control.DisplayRectangle);
            }
            else
            {
                Assert.Equal(new Size(width - 4, Control.DefaultFont.Height + 3), control.ClientSize);
                Assert.Equal(new Rectangle(0, 0, width - 4, Control.DefaultFont.Height + 3), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, width - 4, Control.DefaultFont.Height + 3), control.DisplayRectangle);
            }

            Assert.Equal(new Size(width, preferredHeight), control.Size);
            Assert.Equal(x, control.Left);
            Assert.Equal(x + width, control.Right);
            Assert.Equal(y, control.Top);
            Assert.Equal(y + preferredHeight, control.Bottom);
            Assert.Equal(width, control.Width);
            Assert.Equal(preferredHeight, control.Height);
            Assert.Equal(new Rectangle(x, y, width, preferredHeight), control.Bounds);
            Assert.Equal(expectedLocationChangedCallCount, moveCallCount);
            Assert.Equal(expectedLocationChangedCallCount, locationChangedCallCount);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.Equal(expectedLayoutCallCount, resizeCallCount);
            Assert.Equal(expectedLayoutCallCount, sizeChangedCallCount);
            Assert.Equal(expectedLayoutCallCount, clientSizeChangedCallCount);
            Assert.False(control.IsHandleCreated);

            // Call again.
            control.SetBoundsCore(x, y, width, height, specified);

            if (Application.UseVisualStyles)
            {
                Assert.Equal(new Size(width, Control.DefaultFont.Height + 7), control.ClientSize);
                Assert.Equal(new Rectangle(0, 0, width, Control.DefaultFont.Height + 7), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, width, Control.DefaultFont.Height + 7), control.DisplayRectangle);
            }
            else
            {
                Assert.Equal(new Size(width - 4, Control.DefaultFont.Height + 3), control.ClientSize);
                Assert.Equal(new Rectangle(0, 0, width - 4, Control.DefaultFont.Height + 3), control.ClientRectangle);
                Assert.Equal(new Rectangle(0, 0, width - 4, Control.DefaultFont.Height + 3), control.DisplayRectangle);
            }

            Assert.Equal(new Size(width, preferredHeight), control.Size);
            Assert.Equal(x, control.Left);
            Assert.Equal(x + width, control.Right);
            Assert.Equal(y, control.Top);
            Assert.Equal(y + preferredHeight, control.Bottom);
            Assert.Equal(width, control.Width);
            Assert.Equal(preferredHeight, control.Height);
            Assert.Equal(new Rectangle(x, y, width, preferredHeight), control.Bounds);
            Assert.Equal(expectedLocationChangedCallCount, moveCallCount);
            Assert.Equal(expectedLocationChangedCallCount, locationChangedCallCount);
            Assert.Equal(expectedLayoutCallCount, layoutCallCount);
            Assert.Equal(expectedLayoutCallCount, resizeCallCount);
            Assert.Equal(expectedLayoutCallCount, sizeChangedCallCount);
            Assert.Equal(expectedLayoutCallCount, clientSizeChangedCallCount);
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_ValidateEditText_Invoke_Nop()
        {
            using var control = new SubUpDownBase();
            control.ValidateEditText();
            Assert.False(control.IsHandleCreated);

            // Call again.
            control.ValidateEditText();
            Assert.False(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_ValidateEditText_InvokeWithHandle_Nop()
        {
            using var control = new SubUpDownBase();
            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.ValidateEditText();
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);

            // Call again.
            control.ValidateEditText();
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeKillFocusWithoutHandle_Success()
        {
            using (new NoAssertContext())
            {
                using var control = new SubUpDownBase();
                int callCount = 0;
                control.LostFocus += (sender, e) => callCount++;
                var m = new Message
                {
                    Msg = (int)User32.WM.KILLFOCUS,
                    Result = (IntPtr)250
                };
                control.WndProc(ref m);
                Assert.Equal(IntPtr.Zero, m.Result);
                Assert.Equal(0, callCount);
                Assert.False(control.IsHandleCreated);
            }
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeKillFocusWithHandle_Success()
        {
            using var control = new SubUpDownBase();
            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;
            control.LostFocus += (sender, e) => callCount++;
            var m = new Message
            {
                Msg = (int)User32.WM.KILLFOCUS,
                Result = (IntPtr)250
            };
            control.WndProc(ref m);
            Assert.Equal(IntPtr.Zero, m.Result);
            Assert.Equal(0, callCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeMouseHoverWithoutHandle_Success()
        {
            using (new NoAssertContext())
            {
                using var control = new SubUpDownBase();
                int callCount = 0;
                control.MouseHover += (sender, e) =>
                {
                    Assert.Same(control, sender);
                    Assert.Same(EventArgs.Empty, e);
                    callCount++;
                };
                var m = new Message
                {
                    Msg = (int)User32.WM.MOUSEHOVER,
                    Result = (IntPtr)250
                };
                control.WndProc(ref m);
                Assert.Equal(IntPtr.Zero, m.Result);
                Assert.Equal(1, callCount);
                Assert.False(control.IsHandleCreated);
            }
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeMouseHoverWithHandle_Success()
        {
            using var control = new SubUpDownBase();
            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;
            control.MouseHover += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            var m = new Message
            {
                Msg = (int)User32.WM.MOUSEHOVER,
                Result = (IntPtr)250
            };
            control.WndProc(ref m);
            Assert.Equal(IntPtr.Zero, m.Result);
            Assert.Equal(1, callCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeSetFocusWithoutHandle_Success()
        {
            using var control = new SubUpDownBase();
            int callCount = 0;
            control.GotFocus += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            var m = new Message
            {
                Msg = (int)User32.WM.SETFOCUS,
                Result = (IntPtr)250
            };
            control.WndProc(ref m);
            Assert.Equal((IntPtr)250, m.Result);
            Assert.Equal(0, callCount);
            Assert.True(control.IsHandleCreated);
        }

        [WinFormsFact]
        public void UpDownBase_WndProc_InvokeSetFocusWithHandle_Success()
        {
            using var control = new SubUpDownBase();
            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;
            control.GotFocus += (sender, e) =>
            {
                Assert.Same(control, sender);
                Assert.Same(EventArgs.Empty, e);
                callCount++;
            };
            var m = new Message
            {
                Msg = (int)User32.WM.SETFOCUS,
                Result = (IntPtr)250
            };
            control.WndProc(ref m);
            Assert.Equal((IntPtr)250, m.Result);
            Assert.Equal(0, callCount);
            Assert.True(control.IsHandleCreated);
            Assert.Equal(0, invalidatedCallCount);
            Assert.Equal(0, styleChangedCallCount);
            Assert.Equal(0, createdCallCount);
        }

        private class CustomValidateUpDownBase : UpDownBase
        {
            public new bool ChangingText
            {
                get => base.ChangingText;
                set => base.ChangingText = value;
            }

            public Action DownButtonAction { get; set; }

            public override void DownButton() => DownButtonAction();

            public Action<object, EventArgs> OnChangedAction { get; set; }

            protected override void OnChanged(object source, EventArgs e) => OnChangedAction(source, e);

            public new void OnTextBoxKeyDown(object source, KeyEventArgs e) => base.OnTextBoxKeyDown(source, e);

            public new void OnTextBoxLostFocus(object source, EventArgs e) => base.OnTextBoxLostFocus(source, e);

            public new void OnTextBoxTextChanged(object source, EventArgs e) => base.OnTextBoxTextChanged(source, e);

            public Action UpButtonAction { get; set; }

            public override void UpButton() => UpButtonAction();

            public Action UpdateEditTextAction { get; set; }

            protected override void UpdateEditText() => UpdateEditTextAction();

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

            public Action ValidateEditTextAction { get; set; }

            protected override void ValidateEditText() => ValidateEditTextAction();
        }

        public class SubUpDownBase : UpDownBase
        {
            public new const int ScrollStateAutoScrolling = UpDownBase.ScrollStateAutoScrolling;

            public new const int ScrollStateHScrollVisible = UpDownBase.ScrollStateHScrollVisible;

            public new const int ScrollStateVScrollVisible = UpDownBase.ScrollStateVScrollVisible;

            public new const int ScrollStateUserHasScrolled = UpDownBase.ScrollStateUserHasScrolled;

            public new const int ScrollStateFullDrag = UpDownBase.ScrollStateFullDrag;

            public new SizeF AutoScaleFactor => base.AutoScaleFactor;

            public new bool CanEnableIme => base.CanEnableIme;

            public new bool CanRaiseEvents => base.CanRaiseEvents;

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

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

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

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

            public override void DownButton()
            {
                throw new NotImplementedException();
            }

            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 OnChanged(object source, EventArgs e) => base.OnChanged(source, e);

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

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

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

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

            public new void OnMouseDown(MouseEventArgs e) => base.OnMouseDown(e);

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

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

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

            public new void OnMouseMove(MouseEventArgs e) => base.OnMouseMove(e);

            public new void OnMouseUp(MouseEventArgs mevent) => base.OnMouseUp(mevent);

            public new void OnMouseWheel(MouseEventArgs e) => base.OnMouseWheel(e);

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

            public new void OnTextBoxKeyDown(object source, KeyEventArgs e) => base.OnTextBoxKeyDown(source, e);

            public new void OnTextBoxKeyPress(object source, KeyPressEventArgs e) => base.OnTextBoxKeyPress(source, e);

            public new void OnTextBoxLostFocus(object source, EventArgs e) => base.OnTextBoxLostFocus(source, e);

            public new void OnTextBoxResize(object source, EventArgs e) => base.OnTextBoxResize(source, e);

            public new void OnTextBoxTextChanged(object source, EventArgs e) => base.OnTextBoxTextChanged(source, e);

            public new void RescaleConstantsForDpi(int deviceDpiOld, int deviceDpiNew) => base.RescaleConstantsForDpi(deviceDpiOld, deviceDpiNew);

            public new void SetBoundsCore(int x, int y, int width, int height, BoundsSpecified specified) => base.SetBoundsCore(x, y, width, height, specified);

            public override void UpButton()
            {
                throw new NotImplementedException();
            }

            protected override void UpdateEditText()
            {
                throw new NotImplementedException();
            }

            public new void ValidateEditText() => base.ValidateEditText();

            public new void WndProc(ref Message m) => base.WndProc(ref m);
        }
    }
}
