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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms.Layout;
using Moq;
using System.Windows.Forms.TestUtilities;
using Point = System.Drawing.Point;
using Size = System.Drawing.Size;
namespace System.Windows.Forms.Tests;
public class UserControlTests
{
[WinFormsFact]
public void UserControl_Ctor_Default()
{
using SubUserControl control = new();
Assert.Null(control.AccessibleDefaultActionDescription);
Assert.Null(control.AccessibleDescription);
Assert.Null(control.AccessibleName);
Assert.Null(control.ActiveControl);
Assert.Equal(AccessibleRole.Default, control.AccessibleRole);
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(Control.DefaultBackColor, control.BackColor);
Assert.Null(control.BackgroundImage);
Assert.Equal(ImageLayout.Tile, control.BackgroundImageLayout);
Assert.NotNull(control.BindingContext);
Assert.Same(control.BindingContext, control.BindingContext);
Assert.Equal(150, control.Bottom);
Assert.Equal(new Rectangle(0, 0, 150, 150), control.Bounds);
Assert.False(control.CanEnableIme);
Assert.False(control.CanFocus);
Assert.True(control.CanRaiseEvents);
Assert.True(control.CanSelect);
Assert.False(control.Capture);
Assert.True(control.CausesValidation);
Assert.Equal(new Rectangle(0, 0, 150, 150), control.ClientRectangle);
Assert.Equal(new Size(150, 150), control.ClientSize);
Assert.Null(control.Container);
Assert.False(control.ContainsFocus);
Assert.Null(control.ContextMenuStrip);
Assert.Empty(control.Controls);
Assert.Same(control.Controls, control.Controls);
Assert.False(control.Created);
Assert.Equal(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(150, 150), control.DefaultSize);
Assert.False(control.DesignMode);
Assert.Equal(new Rectangle(0, 0, 150, 150), control.DisplayRectangle);
Assert.Equal(DockStyle.None, control.Dock);
Assert.NotNull(control.DockPadding);
Assert.Same(control.DockPadding, control.DockPadding);
Assert.Equal(0, control.DockPadding.Top);
Assert.Equal(0, control.DockPadding.Bottom);
Assert.Equal(0, control.DockPadding.Left);
Assert.Equal(0, control.DockPadding.Right);
Assert.False(control.DoubleBuffered);
Assert.True(control.Enabled);
Assert.NotNull(control.Events);
Assert.Same(control.Events, control.Events);
Assert.False(control.Focused);
Assert.Equal(Control.DefaultFont, control.Font);
Assert.Equal(control.Font.Height, control.FontHeight);
Assert.Equal(Control.DefaultForeColor, control.ForeColor);
Assert.False(control.HasChildren);
Assert.Equal(150, control.Height);
Assert.NotNull(control.HorizontalScroll);
Assert.Same(control.HorizontalScroll, control.HorizontalScroll);
Assert.False(control.HScroll);
Assert.Equal(ImeMode.NoControl, control.ImeMode);
Assert.Equal(ImeMode.NoControl, control.ImeModeBase);
Assert.False(control.IsAccessible);
Assert.False(control.IsMirrored);
Assert.NotNull(control.LayoutEngine);
Assert.Same(control.LayoutEngine, control.LayoutEngine);
Assert.Equal(0, control.Left);
Assert.Equal(Point.Empty, control.Location);
Assert.Equal(new Padding(3), control.Margin);
Assert.Equal(Size.Empty, control.MaximumSize);
Assert.Equal(Size.Empty, control.MinimumSize);
Assert.Equal(Padding.Empty, control.Padding);
Assert.Null(control.Parent);
Assert.Equal(Size.Empty, control.PreferredSize);
Assert.Equal("Microsoft\u00AE .NET", control.ProductName);
Assert.False(control.RecreatingHandle);
Assert.Null(control.Region);
Assert.False(control.ResizeRedraw);
Assert.Equal(150, control.Right);
Assert.Equal(RightToLeft.No, control.RightToLeft);
Assert.True(control.ShowFocusCues);
Assert.True(control.ShowKeyboardCues);
Assert.Null(control.Site);
Assert.Equal(new Size(150, 150), control.Size);
Assert.Equal(0, control.TabIndex);
Assert.True(control.TabStop);
Assert.Empty(control.Text);
Assert.Equal(0, control.Top);
Assert.Null(control.TopLevelControl);
Assert.False(control.UseWaitCursor);
Assert.True(control.Visible);
Assert.NotNull(control.VerticalScroll);
Assert.Same(control.VerticalScroll, control.VerticalScroll);
Assert.False(control.VScroll);
Assert.Equal(150, control.Width);
Assert.False(control.IsHandleCreated);
}
[WinFormsFact]
public void UserControl_CreateParams_GetDefault_ReturnsExpected()
{
using SubUserControl control = new();
CreateParams createParams = control.CreateParams;
Assert.Null(createParams.Caption);
Assert.Null(createParams.ClassName);
Assert.Equal(0x8, createParams.ClassStyle);
Assert.Equal(0x10000, createParams.ExStyle);
Assert.Equal(150, createParams.Height);
Assert.Equal(IntPtr.Zero, createParams.Parent);
Assert.Null(createParams.Param);
Assert.Equal(0x56010000, createParams.Style);
Assert.Equal(150, 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 UserControl_CreateParams_GetBorderStyle_ReturnsExpected(BorderStyle borderStyle, int expectedStyle, int expectedExStyle)
{
using SubUserControl control = new()
{
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(150, createParams.Height);
Assert.Equal(IntPtr.Zero, createParams.Parent);
Assert.Null(createParams.Param);
Assert.Equal(expectedStyle, createParams.Style);
Assert.Equal(150, createParams.Width);
Assert.Equal(0, createParams.X);
Assert.Equal(0, createParams.Y);
Assert.Same(createParams, control.CreateParams);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[BoolData]
public void UserControl_AutoSize_Set_GetReturnsExpected(bool value)
{
using UserControl control = new();
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 UserControl_AutoSize_SetWithHandler_CallsAutoSizeChanged()
{
using UserControl control = new()
{
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);
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_Set_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using SubUserControl control = new();
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
layoutCallCount++;
};
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetDesignMode_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
Mock<ISite> mockSite = new(MockBehavior.Strict);
mockSite
.Setup(s => s.GetService(typeof(AmbientProperties)))
.Returns(new AmbientProperties());
mockSite
.Setup(s => s.DesignMode)
.Returns(true);
mockSite
.Setup(s => s.Container)
.Returns((IContainer)null);
using SubUserControl control = new()
{
Site = mockSite.Object
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
layoutCallCount++;
};
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetWithParent_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using Control parent = new();
using SubUserControl control = new()
{
Parent = parent
};
int layoutCallCount = 0;
control.Layout += (sender, e) => layoutCallCount++;
int parentLayoutCallCount = 0;
void parentHandler(object sender, LayoutEventArgs e)
{
Assert.Same(parent, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
parentLayoutCallCount++;
}
parent.Layout += parentHandler;
try
{
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(0, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(0, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
}
finally
{
parent.Layout -= parentHandler;
}
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetDesignModeWithParent_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using Control parent = new();
Mock<ISite> mockSite = new(MockBehavior.Strict);
mockSite
.Setup(s => s.GetService(typeof(AmbientProperties)))
.Returns(new AmbientProperties());
mockSite
.Setup(s => s.DesignMode)
.Returns(true);
mockSite
.Setup(s => s.Container)
.Returns((IContainer)null);
using SubUserControl control = new()
{
Parent = parent,
Site = mockSite.Object
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
layoutCallCount++;
};
int parentLayoutCallCount = 0;
void parentHandler(object sender, LayoutEventArgs e) => parentLayoutCallCount++;
parent.Layout += parentHandler;
try
{
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(0, parentLayoutCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(0, parentLayoutCallCount);
}
finally
{
parent.Layout -= parentHandler;
}
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetWithCustomLayoutEngineParent_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using CustomLayoutEngineControl parent = new();
using SubUserControl control = new()
{
Parent = parent
};
parent.SetLayoutEngine(new SubLayoutEngine());
int layoutCallCount = 0;
control.Layout += (sender, e) => layoutCallCount++;
int parentLayoutCallCount = 0;
void parentHandler(object sender, LayoutEventArgs e)
{
Assert.Same(parent, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
parentLayoutCallCount++;
}
parent.Layout += parentHandler;
try
{
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(0, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.False(control.IsHandleCreated);
Assert.Equal(0, layoutCallCount);
Assert.False(parent.IsHandleCreated);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
}
finally
{
parent.Layout -= parentHandler;
}
}
private class CustomLayoutEngineControl : Control
{
private LayoutEngine _layoutEngine;
public CustomLayoutEngineControl()
{
_layoutEngine = new Control().LayoutEngine;
}
public void SetLayoutEngine(LayoutEngine layoutEngine)
{
_layoutEngine = layoutEngine;
}
public override LayoutEngine LayoutEngine => _layoutEngine;
}
private class SubLayoutEngine : LayoutEngine
{
}
[WinFormsTheory]
[EnumData<AutoSizeMode>]
public void UserControl_AutoSizeMode_SetWithHandle_GetReturnsExpected(AutoSizeMode value)
{
using SubUserControl control = new();
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetWithParentWithHandle_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using Control parent = new();
using SubUserControl control = new()
{
Parent = parent
};
int layoutCallCount = 0;
control.Layout += (sender, e) => layoutCallCount++;
int parentLayoutCallCount = 0;
void parentHandler(object sender, LayoutEventArgs e)
{
Assert.Same(parent, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
parentLayoutCallCount++;
}
parent.Layout += parentHandler;
Assert.NotEqual(IntPtr.Zero, parent.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 parentInvalidatedCallCount = 0;
parent.Invalidated += (sender, e) => parentInvalidatedCallCount++;
int parentStyleChangedCallCount = 0;
parent.StyleChanged += (sender, e) => parentStyleChangedCallCount++;
int parentCreatedCallCount = 0;
parent.HandleCreated += (sender, e) => parentCreatedCallCount++;
try
{
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.Equal(0, layoutCallCount);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
Assert.True(parent.IsHandleCreated);
Assert.Equal(0, parentInvalidatedCallCount);
Assert.Equal(0, parentStyleChangedCallCount);
Assert.Equal(0, parentCreatedCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.Equal(0, layoutCallCount);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
Assert.True(parent.IsHandleCreated);
Assert.Equal(0, parentInvalidatedCallCount);
Assert.Equal(0, parentStyleChangedCallCount);
Assert.Equal(0, parentCreatedCallCount);
}
finally
{
parent.Layout -= parentHandler;
}
}
[WinFormsTheory]
[InlineData(AutoSizeMode.GrowAndShrink, 1)]
[InlineData(AutoSizeMode.GrowOnly, 0)]
public void UserControl_AutoSizeMode_SetWithCustomLayoutEngineParentWithHandle_GetReturnsExpected(AutoSizeMode value, int expectedLayoutCallCount)
{
using CustomLayoutEngineControl parent = new();
using SubUserControl control = new()
{
Parent = parent
};
int layoutCallCount = 0;
control.Layout += (sender, e) => layoutCallCount++;
int parentLayoutCallCount = 0;
void parentHandler(object sender, LayoutEventArgs e)
{
Assert.Same(parent, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("AutoSize", e.AffectedProperty);
parentLayoutCallCount++;
}
parent.Layout += parentHandler;
Assert.NotEqual(IntPtr.Zero, parent.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 parentInvalidatedCallCount = 0;
parent.Invalidated += (sender, e) => parentInvalidatedCallCount++;
int parentStyleChangedCallCount = 0;
parent.StyleChanged += (sender, e) => parentStyleChangedCallCount++;
int parentCreatedCallCount = 0;
parent.HandleCreated += (sender, e) => parentCreatedCallCount++;
try
{
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.Equal(0, layoutCallCount);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
Assert.True(parent.IsHandleCreated);
Assert.Equal(0, parentInvalidatedCallCount);
Assert.Equal(0, parentStyleChangedCallCount);
Assert.Equal(0, parentCreatedCallCount);
// Set same.
control.AutoSizeMode = value;
Assert.Equal(value, control.AutoSizeMode);
Assert.Equal(value, control.GetAutoSizeMode());
Assert.Equal(0, layoutCallCount);
Assert.Equal(expectedLayoutCallCount, parentLayoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
Assert.True(parent.IsHandleCreated);
Assert.Equal(0, parentInvalidatedCallCount);
Assert.Equal(0, parentStyleChangedCallCount);
Assert.Equal(0, parentCreatedCallCount);
}
finally
{
parent.Layout -= parentHandler;
}
}
[WinFormsTheory]
[InvalidEnumData<AutoSizeMode>]
public void UserControl_AutoSizeMode_SetInvalid_ThrowsInvalidEnumArgumentException(AutoSizeMode value)
{
using UserControl control = new();
Assert.Throws<InvalidEnumArgumentException>("value", () => control.AutoSizeMode = value);
}
public static IEnumerable<object[]> AutoValidate_Set_TestData()
{
yield return new object[] { AutoValidate.Disable, AutoValidate.Disable };
yield return new object[] { AutoValidate.EnablePreventFocusChange, AutoValidate.EnablePreventFocusChange };
yield return new object[] { AutoValidate.EnableAllowFocusChange, AutoValidate.EnableAllowFocusChange };
yield return new object[] { AutoValidate.Inherit, AutoValidate.EnablePreventFocusChange };
}
[WinFormsTheory]
[MemberData(nameof(AutoValidate_Set_TestData))]
public void UserControl_AutoValidate_Set_GetReturnsExpected(AutoValidate value, AutoValidate expected)
{
using UserControl control = new()
{
AutoValidate = value
};
Assert.Equal(expected, control.AutoValidate);
Assert.False(control.IsHandleCreated);
// Set same.
control.AutoValidate = value;
Assert.Equal(expected, control.AutoValidate);
Assert.False(control.IsHandleCreated);
}
[WinFormsFact]
public void UserControl_AutoValidate_SetWithHandler_CallsAutoValidateChanged()
{
using UserControl control = new();
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(EventArgs.Empty, e);
callCount++;
};
control.AutoValidateChanged += handler;
// Set different.
control.AutoValidate = AutoValidate.EnablePreventFocusChange;
Assert.Equal(AutoValidate.EnablePreventFocusChange, control.AutoValidate);
Assert.Equal(1, callCount);
// Set same.
control.AutoValidate = AutoValidate.EnablePreventFocusChange;
Assert.Equal(AutoValidate.EnablePreventFocusChange, control.AutoValidate);
Assert.Equal(1, callCount);
// Set different.
control.AutoValidate = AutoValidate.EnableAllowFocusChange;
Assert.Equal(AutoValidate.EnableAllowFocusChange, control.AutoValidate);
Assert.Equal(2, callCount);
// Remove handler.
control.AutoValidateChanged -= handler;
control.AutoValidate = AutoValidate.Disable;
Assert.False(control.AutoSize);
Assert.Equal(2, callCount);
}
[WinFormsTheory]
[InvalidEnumData<AutoValidate>]
public void UserControl_AutoValidate_SetInvalidValue_ThrowsInvalidEnumArgumentException(AutoValidate value)
{
using UserControl control = new();
Assert.Throws<InvalidEnumArgumentException>("value", () => control.AutoValidate = value);
}
[WinFormsTheory]
[EnumData<BorderStyle>]
public void UserControl_BorderStyle_Set_GetReturnsExpected(BorderStyle value)
{
using UserControl control = new()
{
BorderStyle = value
};
Assert.Equal(value, control.BorderStyle);
Assert.False(control.IsHandleCreated);
// Set same.
control.BorderStyle = value;
Assert.Equal(value, control.BorderStyle);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[InlineData(BorderStyle.Fixed3D, 1)]
[InlineData(BorderStyle.FixedSingle, 1)]
[InlineData(BorderStyle.None, 0)]
public void UserControl_BorderStyle_SetWithHandle_GetReturnsExpected(BorderStyle value, int expectedInvalidatedCallCount)
{
using UserControl control = new();
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
control.BorderStyle = value;
Assert.Equal(value, control.BorderStyle);
Assert.True(control.IsHandleCreated);
Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
Assert.Equal(expectedInvalidatedCallCount, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Set same.
control.BorderStyle = value;
Assert.Equal(value, control.BorderStyle);
Assert.True(control.IsHandleCreated);
Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
Assert.Equal(expectedInvalidatedCallCount, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsTheory]
[InvalidEnumData<BorderStyle>]
public void UserControl_BorderStyle_SetInvalid_ThrowsInvalidEnumArgumentException(BorderStyle value)
{
using UserControl control = new();
Assert.Throws<InvalidEnumArgumentException>("value", () => control.BorderStyle = value);
}
[WinFormsTheory]
[NormalizedStringData]
public void UserControl_Text_Set_GetReturnsExpected(string value, string expected)
{
using UserControl control = new()
{
Text = value
};
Assert.Equal(expected, control.Text);
Assert.False(control.IsHandleCreated);
// Set same.
control.Text = value;
Assert.Equal(expected, control.Text);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[NormalizedStringData]
public void UserControl_Text_SetWithHandle_GetReturnsExpected(string value, string expected)
{
using UserControl control = new();
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
control.Text = value;
Assert.Equal(expected, control.Text);
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.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsFact]
public void UserControl_Text_SetWithHandler_CallsTextChanged()
{
using UserControl control = new();
int callCount = 0;
void handler(object sender, EventArgs 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);
}
[WinFormsFact]
public void UserControl_GetAutoSizeMode_Invoke_ReturnsExpected()
{
using SubUserControl control = new();
Assert.Equal(AutoSizeMode.GrowOnly, control.GetAutoSizeMode());
}
[WinFormsTheory]
[InlineData(0, true)]
[InlineData(SubUserControl.ScrollStateAutoScrolling, false)]
[InlineData(SubUserControl.ScrollStateFullDrag, false)]
[InlineData(SubUserControl.ScrollStateHScrollVisible, false)]
[InlineData(SubUserControl.ScrollStateUserHasScrolled, false)]
[InlineData(SubUserControl.ScrollStateVScrollVisible, false)]
[InlineData(int.MaxValue, false)]
[InlineData((-1), false)]
public void UserControl_GetScrollState_Invoke_ReturnsExpected(int bit, bool expected)
{
using SubUserControl control = new();
Assert.Equal(expected, control.GetScrollState(bit));
}
[WinFormsTheory]
[InlineData(ControlStyles.ContainerControl, true)]
[InlineData(ControlStyles.UserPaint, true)]
[InlineData(ControlStyles.Opaque, false)]
[InlineData(ControlStyles.ResizeRedraw, false)]
[InlineData(ControlStyles.FixedWidth, false)]
[InlineData(ControlStyles.FixedHeight, false)]
[InlineData(ControlStyles.StandardClick, true)]
[InlineData(ControlStyles.Selectable, true)]
[InlineData(ControlStyles.UserMouse, false)]
[InlineData(ControlStyles.SupportsTransparentBackColor, true)]
[InlineData(ControlStyles.StandardDoubleClick, true)]
[InlineData(ControlStyles.AllPaintingInWmPaint, false)]
[InlineData(ControlStyles.CacheText, false)]
[InlineData(ControlStyles.EnableNotifyMessage, false)]
[InlineData(ControlStyles.DoubleBuffer, false)]
[InlineData(ControlStyles.OptimizedDoubleBuffer, false)]
[InlineData(ControlStyles.UseTextForAccessibility, true)]
[InlineData((ControlStyles)0, true)]
[InlineData((ControlStyles)int.MaxValue, false)]
[InlineData((ControlStyles)(-1), false)]
public void UserControl_GetStyle_Invoke_ReturnsExpected(ControlStyles flag, bool expected)
{
using SubUserControl control = new();
Assert.Equal(expected, control.GetStyle(flag));
// Call again to test caching.
Assert.Equal(expected, control.GetStyle(flag));
}
[WinFormsFact]
public void UserControl_GetTopLevel_Invoke_ReturnsExpected()
{
using SubUserControl control = new();
Assert.False(control.GetTopLevel());
}
[WinFormsFact]
public void UserControl_OnCreateControl_Invoke_Nop()
{
using SubUserControl control = new();
int bindingContextChangedCallCount = 0;
int loadChangedCallCount = 0;
control.BindingContextChanged += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(EventArgs.Empty, e);
Assert.Equal(bindingContextChangedCallCount, loadChangedCallCount);
bindingContextChangedCallCount++;
};
control.Load += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(EventArgs.Empty, e);
Assert.Equal(bindingContextChangedCallCount - 1, loadChangedCallCount);
loadChangedCallCount++;
};
control.OnCreateControl();
Assert.False(control.Created);
Assert.False(control.IsHandleCreated);
Assert.Equal(1, bindingContextChangedCallCount);
Assert.Equal(1, loadChangedCallCount);
control.OnCreateControl();
Assert.False(control.Created);
Assert.False(control.IsHandleCreated);
Assert.Equal(2, bindingContextChangedCallCount);
Assert.Equal(2, loadChangedCallCount);
}
[WinFormsTheory]
[NewAndDefaultData<EventArgs>]
public void UserControl_OnLoad_Invoke_CallsLoad(EventArgs eventArgs)
{
using SubUserControl control = new();
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(eventArgs, e);
callCount++;
};
// Call with handler.
control.Load += handler;
control.OnLoad(eventArgs);
Assert.Equal(1, callCount);
// Remove handler.
control.Load -= handler;
control.OnLoad(eventArgs);
Assert.Equal(1, callCount);
}
[WinFormsTheory]
[CommonMemberData(typeof(CommonTestHelperEx), nameof(CommonTestHelperEx.GetMouseEventArgsTheoryData))]
public void UserControl_OnMouseDown_Invoke_CallsMouseDown(MouseEventArgs eventArgs)
{
using SubUserControl control = new();
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);
Assert.False(control.IsHandleCreated);
// Remove handler.
control.MouseDown -= handler;
control.OnMouseDown(eventArgs);
Assert.Equal(1, callCount);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[CommonMemberData(typeof(CommonTestHelperEx), nameof(CommonTestHelperEx.GetMouseEventArgsTheoryData))]
public void UserControl_OnMouseDown_InvokeWithHandle_CallsMouseDown(MouseEventArgs eventArgs)
{
using SubUserControl control = new();
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
int callCount = 0;
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);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Remove handler.
control.MouseDown -= handler;
control.OnMouseDown(eventArgs);
Assert.Equal(1, callCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsTheory]
[NewAndDefaultData<EventArgs>]
public void UserControl_OnResize_Invoke_CallsResize(EventArgs eventArgs)
{
using SubUserControl control = new();
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(eventArgs, e);
callCount++;
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("Bounds", e.AffectedProperty);
layoutCallCount++;
};
// Call with handler.
control.Resize += handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(1, layoutCallCount);
Assert.False(control.IsHandleCreated);
// Remove handler.
control.Resize -= handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(2, layoutCallCount);
Assert.False(control.IsHandleCreated);
}
[WinFormsTheory]
[NewAndDefaultData<EventArgs>]
public void UserControl_OnResize_InvokeWithBackgroundImage_CallsResize(EventArgs eventArgs)
{
using Bitmap backgroundImage = new(10, 10);
using SubUserControl control = new()
{
BackgroundImage = backgroundImage
};
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(eventArgs, e);
callCount++;
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("Bounds", e.AffectedProperty);
layoutCallCount++;
};
// Call with handler.
control.Resize += handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(1, layoutCallCount);
Assert.False(control.IsHandleCreated);
// Remove handler.
control.Resize -= handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(2, layoutCallCount);
Assert.False(control.IsHandleCreated);
}
public static IEnumerable<object[]> OnResize_WithHandle_TestData()
{
yield return new object[] { true, null, 1 };
yield return new object[] { true, new EventArgs(), 1 };
yield return new object[] { false, null, 0 };
yield return new object[] { false, new EventArgs(), 0 };
}
[WinFormsTheory]
[MemberData(nameof(OnResize_WithHandle_TestData))]
public void UserControl_OnResize_InvokeWithHandle_CallsResize(bool resizeRedraw, EventArgs eventArgs, int expectedInvalidatedCallCount)
{
using SubUserControl control = new();
control.SetStyle(ControlStyles.ResizeRedraw, resizeRedraw);
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(eventArgs, e);
callCount++;
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("Bounds", e.AffectedProperty);
layoutCallCount++;
};
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++;
// Call with handler.
control.Resize += handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(1, layoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(expectedInvalidatedCallCount, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Remove handler.
control.Resize -= handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(2, layoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(expectedInvalidatedCallCount * 2, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsTheory]
[MemberData(nameof(OnResize_WithHandle_TestData))]
public void UserControl_OnResize_InvokeWithBackgroundImageWithHandle_CallsResize(bool resizeRedraw, EventArgs eventArgs, int expectedInvalidatedCallCount)
{
using Bitmap backgroundImage = new(10, 10);
using SubUserControl control = new()
{
BackgroundImage = backgroundImage
};
control.SetStyle(ControlStyles.ResizeRedraw, resizeRedraw);
int callCount = 0;
EventHandler handler = (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(eventArgs, e);
callCount++;
};
int layoutCallCount = 0;
control.Layout += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(control, e.AffectedControl);
Assert.Equal("Bounds", e.AffectedProperty);
layoutCallCount++;
};
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++;
// Call with handler.
control.Resize += handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(1, layoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal(expectedInvalidatedCallCount + 1, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
// Remove handler.
control.Resize -= handler;
control.OnResize(eventArgs);
Assert.Equal(1, callCount);
Assert.Equal(2, layoutCallCount);
Assert.True(control.IsHandleCreated);
Assert.Equal((expectedInvalidatedCallCount + 1) * 2, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsFact]
public void UserControl_ValidateChildren_InvokeWithoutChildren_ReturnsTrue()
{
using UserControl control = new();
Assert.True(control.ValidateChildren());
}
public static IEnumerable<object[]> ValidateChildren_TestData()
{
yield return new object[] { true, 0 };
yield return new object[] { false, 1 };
}
[WinFormsTheory]
[MemberData(nameof(ValidateChildren_TestData))]
public void UserControl_ValidateChildren_InvokeWithChildren_ReturnsExpected(bool cancel, int expectedCallCount)
{
using UserControl control = new();
using Control child1 = new();
using Control grandchild1 = new();
child1.Controls.Add(grandchild1);
using UserControl child2 = new();
using Control grandchild2 = new();
child2.Controls.Add(grandchild2);
using TabControl child3 = new();
using TabPage grandchild3 = new();
child3.Controls.Add(grandchild3);
using SubControl child4 = new();
child4.SetStyle(ControlStyles.Selectable, false);
using SubControl child5 = new()
{
Enabled = false
};
using SubControl child6 = new()
{
Visible = false
};
using SubControl child7 = new()
{
TabStop = false
};
using SubControl child8 = new()
{
CausesValidation = false
};
control.Controls.Add(child1);
control.Controls.Add(child2);
control.Controls.Add(child3);
control.Controls.Add(child4);
control.Controls.Add(child5);
control.Controls.Add(child6);
control.Controls.Add(child7);
control.Controls.Add(child8);
int validatingCallCount = 0;
control.Validating += (sender, e) => validatingCallCount++;
int validatedCallCount = 0;
control.Validated += (sender, e) => validatedCallCount++;
int child1ValidatingCallCount = 0;
child1.Validating += (sender, e) =>
{
Assert.Same(child1, sender);
Assert.False(e.Cancel);
child1ValidatingCallCount++;
e.Cancel = cancel;
};
int child1ValidatedCallCount = 0;
child1.Validated += (sender, e) =>
{
Assert.Same(child1, sender);
Assert.Same(EventArgs.Empty, e);
child1ValidatedCallCount++;
};
int grandchild1ValidatingCallCount = 0;
grandchild1.Validating += (sender, e) =>
{
Assert.Same(grandchild1, sender);
Assert.False(e.Cancel);
grandchild1ValidatingCallCount++;
};
int grandchild1ValidatedCallCount = 0;
grandchild1.Validated += (sender, e) => grandchild1ValidatedCallCount++;
int child2ValidatingCallCount = 0;
child2.Validating += (sender, e) =>
{
Assert.Same(child2, sender);
Assert.False(e.Cancel);
child2ValidatingCallCount++;
};
int child2ValidatedCallCount = 0;
child2.Validated += (sender, e) =>
{
Assert.Same(child2, sender);
Assert.Same(EventArgs.Empty, e);
child2ValidatedCallCount++;
};
int grandchild2ValidatingCallCount = 0;
grandchild2.Validating += (sender, e) =>
{
Assert.Same(grandchild2, sender);
Assert.False(e.Cancel);
grandchild2ValidatingCallCount++;
};
int grandchild2ValidatedCallCount = 0;
grandchild2.Validated += (sender, e) =>
{
Assert.Same(grandchild2, sender);
Assert.Same(EventArgs.Empty, e);
grandchild2ValidatedCallCount++;
};
int child3ValidatingCallCount = 0;
child3.Validating += (sender, e) =>
{
Assert.Same(child3, sender);
Assert.False(e.Cancel);
child3ValidatingCallCount++;
};
int child3ValidatedCallCount = 0;
child3.Validated += (sender, e) =>
{
Assert.Same(child3, sender);
Assert.Same(EventArgs.Empty, e);
child3ValidatedCallCount++;
};
int grandchild3ValidatingCallCount = 0;
grandchild3.Validating += (sender, e) => grandchild3ValidatingCallCount++;
int grandchild3ValidatedCallCount = 0;
grandchild3.Validated += (sender, e) => grandchild3ValidatedCallCount++;
int child4ValidatingCallCount = 0;
child4.Validating += (sender, e) => child4ValidatingCallCount++;
int child4ValidatedCallCount = 0;
child4.Validated += (sender, e) => child4ValidatedCallCount++;
int child5ValidatingCallCount = 0;
child5.Validating += (sender, e) =>
{
Assert.Same(child5, sender);
Assert.False(e.Cancel);
child5ValidatingCallCount++;
};
int child5ValidatedCallCount = 0;
child5.Validated += (sender, e) =>
{
Assert.Same(child5, sender);
Assert.Same(EventArgs.Empty, e);
child5ValidatedCallCount++;
};
int child6ValidatingCallCount = 0;
child6.Validating += (sender, e) =>
{
Assert.Same(child6, sender);
Assert.False(e.Cancel);
child6ValidatingCallCount++;
};
int child6ValidatedCallCount = 0;
child6.Validated += (sender, e) =>
{
Assert.Same(child6, sender);
Assert.Same(EventArgs.Empty, e);
child6ValidatedCallCount++;
};
int child7ValidatingCallCount = 0;
child7.Validating += (sender, e) =>
{
Assert.Same(child7, sender);
Assert.False(e.Cancel);
child7ValidatingCallCount++;
};
int child7ValidatedCallCount = 0;
child7.Validated += (sender, e) =>
{
Assert.Same(child7, sender);
Assert.Same(EventArgs.Empty, e);
child7ValidatedCallCount++;
};
int child8ValidatingCallCount = 0;
child8.Validating += (sender, e) => child8ValidatingCallCount++;
int child8ValidatedCallCount = 0;
child8.Validated += (sender, e) => child8ValidatedCallCount++;
Assert.Equal(!cancel, control.ValidateChildren());
Assert.Equal(0, validatingCallCount);
Assert.Equal(0, validatedCallCount);
Assert.Equal(1, child1ValidatingCallCount);
Assert.Equal(expectedCallCount, child1ValidatedCallCount);
Assert.Equal(0, grandchild1ValidatingCallCount);
Assert.Equal(0, grandchild1ValidatedCallCount);
Assert.Equal(1, child2ValidatingCallCount);
Assert.Equal(1, child2ValidatedCallCount);
Assert.Equal(1, grandchild2ValidatingCallCount);
Assert.Equal(1, grandchild2ValidatedCallCount);
Assert.Equal(1, child3ValidatingCallCount);
Assert.Equal(1, child3ValidatedCallCount);
Assert.Equal(0, grandchild3ValidatingCallCount);
Assert.Equal(0, grandchild3ValidatedCallCount);
Assert.Equal(0, child4ValidatingCallCount);
Assert.Equal(0, child4ValidatedCallCount);
Assert.Equal(1, child5ValidatingCallCount);
Assert.Equal(1, child5ValidatedCallCount);
Assert.Equal(1, child6ValidatingCallCount);
Assert.Equal(1, child6ValidatedCallCount);
Assert.Equal(1, child7ValidatingCallCount);
Assert.Equal(1, child7ValidatedCallCount);
Assert.Equal(0, child8ValidatingCallCount);
Assert.Equal(0, child8ValidatedCallCount);
}
[WinFormsTheory]
[EnumData<ValidationConstraints>]
public void UserControl_ValidateChildren_InvokeValidationConstraintsWithoutChildren_ReturnsTrue(ValidationConstraints validationConstraints)
{
using UserControl control = new();
Assert.True(control.ValidateChildren(validationConstraints));
}
public static IEnumerable<object[]> ValidateChildren_ValidationConstraints_TestData()
{
yield return new object[] { ValidationConstraints.ImmediateChildren, true, 0, 0, 0, 1, 1, 1, 1 };
yield return new object[] { ValidationConstraints.ImmediateChildren, false, 1, 0, 0, 1, 1, 1, 1 };
yield return new object[] { ValidationConstraints.Selectable, true, 0, 1, 0, 0, 1, 1, 1 };
yield return new object[] { ValidationConstraints.Selectable, false, 1, 1, 0, 0, 1, 1, 1 };
yield return new object[] { ValidationConstraints.Enabled, true, 0, 1, 1, 1, 0, 1, 1 };
yield return new object[] { ValidationConstraints.Enabled, false, 1, 1, 1, 1, 0, 1, 1 };
yield return new object[] { ValidationConstraints.Visible, true, 0, 1, 0, 1, 1, 0, 1 };
yield return new object[] { ValidationConstraints.Visible, false, 1, 1, 0, 1, 1, 0, 1 };
yield return new object[] { ValidationConstraints.TabStop, true, 0, 1, 0, 1, 1, 1, 0 };
yield return new object[] { ValidationConstraints.TabStop, false, 1, 1, 0, 1, 1, 1, 0 };
yield return new object[] { ValidationConstraints.None, true, 0, 1, 1, 1, 1, 1, 1 };
yield return new object[] { ValidationConstraints.None, false, 1, 1, 1, 1, 1, 1, 1 };
yield return new object[] { ValidationConstraints.ImmediateChildren | ValidationConstraints.Selectable | ValidationConstraints.Enabled | ValidationConstraints.Visible | ValidationConstraints.TabStop, true, 0, 0, 0, 0, 0, 0, 0 };
yield return new object[] { ValidationConstraints.ImmediateChildren | ValidationConstraints.Selectable | ValidationConstraints.Enabled | ValidationConstraints.Visible | ValidationConstraints.TabStop, false, 1, 0, 0, 0, 0, 0, 0 };
}
[WinFormsTheory]
[MemberData(nameof(ValidateChildren_ValidationConstraints_TestData))]
public void UserControl_ValidateChildren_InvokeValidationConstraintsWithChildren_ReturnsExpected(ValidationConstraints validationConstraints, bool cancel, int expectedChild1CallCount, int expectedGrandchild2CallCount, int expectedGrandchild3CallCount, int expectedChild4CallCount, int expectedChild5CallCount, int expectedChild6CallCount, int expectedChild7CallCount)
{
using UserControl control = new();
using Control child1 = new();
using Control grandchild1 = new();
child1.Controls.Add(grandchild1);
using UserControl child2 = new();
using Control grandchild2 = new();
child2.Controls.Add(grandchild2);
using TabControl child3 = new();
using TabPage grandchild3 = new();
child3.Controls.Add(grandchild3);
using SubControl child4 = new();
child4.SetStyle(ControlStyles.Selectable, false);
using SubControl child5 = new()
{
Enabled = false
};
using SubControl child6 = new()
{
Visible = false
};
using SubControl child7 = new()
{
TabStop = false
};
using SubControl child8 = new()
{
CausesValidation = false
};
control.Controls.Add(child1);
control.Controls.Add(child2);
control.Controls.Add(child3);
control.Controls.Add(child4);
control.Controls.Add(child5);
control.Controls.Add(child6);
control.Controls.Add(child7);
control.Controls.Add(child8);
int validatingCallCount = 0;
control.Validating += (sender, e) => validatingCallCount++;
int validatedCallCount = 0;
control.Validated += (sender, e) => validatedCallCount++;
int child1ValidatingCallCount = 0;
child1.Validating += (sender, e) =>
{
Assert.Same(child1, sender);
Assert.False(e.Cancel);
child1ValidatingCallCount++;
e.Cancel = cancel;
};
int child1ValidatedCallCount = 0;
child1.Validated += (sender, e) =>
{
Assert.Same(child1, sender);
Assert.Same(EventArgs.Empty, e);
child1ValidatedCallCount++;
};
int grandchild1ValidatingCallCount = 0;
grandchild1.Validating += (sender, e) =>
{
Assert.Same(grandchild1, sender);
Assert.False(e.Cancel);
grandchild1ValidatingCallCount++;
};
int grandchild1ValidatedCallCount = 0;
grandchild1.Validated += (sender, e) => grandchild1ValidatedCallCount++;
int child2ValidatingCallCount = 0;
child2.Validating += (sender, e) =>
{
Assert.Same(child2, sender);
Assert.False(e.Cancel);
child2ValidatingCallCount++;
};
int child2ValidatedCallCount = 0;
child2.Validated += (sender, e) =>
{
Assert.Same(child2, sender);
Assert.Same(EventArgs.Empty, e);
child2ValidatedCallCount++;
};
int grandchild2ValidatingCallCount = 0;
grandchild2.Validating += (sender, e) =>
{
Assert.Same(grandchild2, sender);
Assert.False(e.Cancel);
grandchild2ValidatingCallCount++;
};
int grandchild2ValidatedCallCount = 0;
grandchild2.Validated += (sender, e) =>
{
Assert.Same(grandchild2, sender);
Assert.Same(EventArgs.Empty, e);
grandchild2ValidatedCallCount++;
};
int child3ValidatingCallCount = 0;
child3.Validating += (sender, e) =>
{
Assert.Same(child3, sender);
Assert.False(e.Cancel);
child3ValidatingCallCount++;
};
int child3ValidatedCallCount = 0;
child3.Validated += (sender, e) =>
{
Assert.Same(child3, sender);
Assert.Same(EventArgs.Empty, e);
child3ValidatedCallCount++;
};
int grandchild3ValidatingCallCount = 0;
grandchild3.Validating += (sender, e) => grandchild3ValidatingCallCount++;
int grandchild3ValidatedCallCount = 0;
grandchild3.Validated += (sender, e) => grandchild3ValidatedCallCount++;
int child4ValidatingCallCount = 0;
child4.Validating += (sender, e) => child4ValidatingCallCount++;
int child4ValidatedCallCount = 0;
child4.Validated += (sender, e) => child4ValidatedCallCount++;
int child5ValidatingCallCount = 0;
child5.Validating += (sender, e) =>
{
Assert.Same(child5, sender);
Assert.False(e.Cancel);
child5ValidatingCallCount++;
};
int child5ValidatedCallCount = 0;
child5.Validated += (sender, e) =>
{
Assert.Same(child5, sender);
Assert.Same(EventArgs.Empty, e);
child5ValidatedCallCount++;
};
int child6ValidatingCallCount = 0;
child6.Validating += (sender, e) =>
{
Assert.Same(child6, sender);
Assert.False(e.Cancel);
child6ValidatingCallCount++;
};
int child6ValidatedCallCount = 0;
child6.Validated += (sender, e) =>
{
Assert.Same(child6, sender);
Assert.Same(EventArgs.Empty, e);
child6ValidatedCallCount++;
};
int child7ValidatingCallCount = 0;
child7.Validating += (sender, e) =>
{
Assert.Same(child7, sender);
Assert.False(e.Cancel);
child7ValidatingCallCount++;
};
int child7ValidatedCallCount = 0;
child7.Validated += (sender, e) =>
{
Assert.Same(child7, sender);
Assert.Same(EventArgs.Empty, e);
child7ValidatedCallCount++;
};
int child8ValidatingCallCount = 0;
child8.Validating += (sender, e) => child8ValidatingCallCount++;
int child8ValidatedCallCount = 0;
child8.Validated += (sender, e) => child8ValidatedCallCount++;
Assert.Equal(!cancel, control.ValidateChildren(validationConstraints));
Assert.Equal(0, validatingCallCount);
Assert.Equal(0, validatedCallCount);
Assert.Equal(1, child1ValidatingCallCount);
Assert.Equal(expectedChild1CallCount, child1ValidatedCallCount);
Assert.Equal(0, grandchild1ValidatingCallCount);
Assert.Equal(0, grandchild1ValidatedCallCount);
Assert.Equal(1, child2ValidatingCallCount);
Assert.Equal(1, child2ValidatedCallCount);
Assert.Equal(expectedGrandchild2CallCount, grandchild2ValidatingCallCount);
Assert.Equal(expectedGrandchild2CallCount, grandchild2ValidatedCallCount);
Assert.Equal(1, child3ValidatingCallCount);
Assert.Equal(1, child3ValidatedCallCount);
Assert.Equal(expectedGrandchild3CallCount, grandchild3ValidatingCallCount);
Assert.Equal(expectedGrandchild3CallCount, grandchild3ValidatedCallCount);
Assert.Equal(expectedChild4CallCount, child4ValidatingCallCount);
Assert.Equal(expectedChild4CallCount, child4ValidatedCallCount);
Assert.Equal(expectedChild5CallCount, child5ValidatingCallCount);
Assert.Equal(expectedChild5CallCount, child5ValidatedCallCount);
Assert.Equal(expectedChild6CallCount, child6ValidatingCallCount);
Assert.Equal(expectedChild6CallCount, child6ValidatedCallCount);
Assert.Equal(expectedChild7CallCount, child7ValidatingCallCount);
Assert.Equal(expectedChild7CallCount, child7ValidatedCallCount);
Assert.Equal(0, child8ValidatingCallCount);
Assert.Equal(0, child8ValidatedCallCount);
}
[WinFormsTheory]
[InlineData((ValidationConstraints)(-1))]
[InlineData((ValidationConstraints)(0x20))]
public void UserControl_ValidateChildren_InvalidValidationConstraints_ThrowsInvalidEnumArgumentException(ValidationConstraints validationConstraints)
{
using UserControl control = new();
Assert.Throws<InvalidEnumArgumentException>("validationConstraints", () => control.ValidateChildren(validationConstraints));
}
[WinFormsFact]
public void UserControl_WndProc_InvokeMouseHoverWithHandle_Success()
{
using SubUserControl control = new();
Assert.NotEqual(IntPtr.Zero, control.Handle);
int invalidatedCallCount = 0;
control.Invalidated += (sender, e) => invalidatedCallCount++;
int styleChangedCallCount = 0;
control.StyleChanged += (sender, e) => styleChangedCallCount++;
int createdCallCount = 0;
control.HandleCreated += (sender, e) => createdCallCount++;
int callCount = 0;
control.MouseHover += (sender, e) =>
{
Assert.Same(control, sender);
Assert.Same(EventArgs.Empty, e);
callCount++;
};
Message m = new()
{
Msg = (int)PInvoke.WM_MOUSEHOVER,
Result = 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 UserControl_WndProc_InvokeSetFocusWithHandle_Success()
{
using Control child1 = new();
using Control child2 = new();
using SubUserControl control = new();
control.Controls.Add(child1);
control.Controls.Add(child2);
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++;
Message m = new()
{
Msg = (int)PInvoke.WM_SETFOCUS,
Result = 250
};
control.WndProc(ref m);
Assert.Equal(250, m.Result);
Assert.Same(child1, control.ActiveControl);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
[WinFormsFact]
public void UserControl_WndProc_InvokeSetFocusWithActiveControlWithHandle_Success()
{
using Control child1 = new();
using Control child2 = new();
using SubUserControl control = new();
control.Controls.Add(child1);
control.Controls.Add(child2);
control.ActiveControl = child2;
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++;
Message m = new()
{
Msg = (int)PInvoke.WM_SETFOCUS,
Result = 250
};
control.WndProc(ref m);
Assert.Equal(250, m.Result);
Assert.Same(child2, control.ActiveControl);
Assert.True(control.IsHandleCreated);
Assert.Equal(0, invalidatedCallCount);
Assert.Equal(0, styleChangedCallCount);
Assert.Equal(0, createdCallCount);
}
private class SubControl : Control
{
public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);
}
public class SubUserControl : UserControl
{
public new const int ScrollStateAutoScrolling = ScrollableControl.ScrollStateAutoScrolling;
public new const int ScrollStateHScrollVisible = ScrollableControl.ScrollStateHScrollVisible;
public new const int ScrollStateVScrollVisible = ScrollableControl.ScrollStateVScrollVisible;
public new const int ScrollStateUserHasScrolled = ScrollableControl.ScrollStateUserHasScrolled;
public new const int ScrollStateFullDrag = ScrollableControl.ScrollStateFullDrag;
public new SizeF AutoScaleFactor => base.AutoScaleFactor;
public new bool CanEnableIme => base.CanEnableIme;
public new bool CanRaiseEvents => base.CanRaiseEvents;
public new CreateParams CreateParams => base.CreateParams;
public new Cursor DefaultCursor => base.DefaultCursor;
public new ImeMode DefaultImeMode => base.DefaultImeMode;
public new Padding DefaultMargin => base.DefaultMargin;
public new Size DefaultMaximumSize => base.DefaultMaximumSize;
public new Size DefaultMinimumSize => base.DefaultMinimumSize;
public new Padding DefaultPadding => base.DefaultPadding;
public new Size DefaultSize => base.DefaultSize;
public new bool DesignMode => base.DesignMode;
public new bool DoubleBuffered
{
get => base.DoubleBuffered;
set => base.DoubleBuffered = value;
}
public new EventHandlerList Events => base.Events;
public new int FontHeight
{
get => base.FontHeight;
set => base.FontHeight = value;
}
public new ImeMode ImeModeBase
{
get => base.ImeModeBase;
set => base.ImeModeBase = value;
}
public new bool ResizeRedraw
{
get => base.ResizeRedraw;
set => base.ResizeRedraw = value;
}
public new bool ShowFocusCues => base.ShowFocusCues;
public new bool ShowKeyboardCues => base.ShowKeyboardCues;
public new bool HScroll
{
get => base.HScroll;
set => base.HScroll = value;
}
public new bool VScroll
{
get => base.VScroll;
set => base.VScroll = value;
}
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 OnCreateControl() => base.OnCreateControl();
public new void OnLoad(EventArgs e) => base.OnLoad(e);
public new void OnMouseDown(MouseEventArgs e) => base.OnMouseDown(e);
public new void OnResize(EventArgs e) => base.OnResize(e);
public new void SetStyle(ControlStyles flag, bool value) => base.SetStyle(flag, value);
public new void WndProc(ref Message m) => base.WndProc(ref m);
}
}
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