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Add coe coverage for RadioButtonFlatAdapter #13727

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296 changes: 296 additions & 0 deletions src/test/unit/System.Windows.Forms/System/Windows/Forms/RadioButtonFlatAdapterTests.cs
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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.Drawing;
using System.Windows.Forms.ButtonInternal;
using static System.Windows.Forms.ButtonInternal.ButtonBaseAdapter;

namespace System.Windows.Forms.Tests;

public class RadioButtonFlatAdapterTests
{
private class TestRadioButton : RadioButton
{
public TestRadioButton()
{
}
}

private class TestRadioButtonFlatAdapter : RadioButtonFlatAdapter
{
public TestRadioButtonFlatAdapter(ButtonBase control) : base(control)
{
}

public void CallPaintDown(PaintEventArgs e, CheckState state) => PaintDown(e, state);
public void CallPaintOver(PaintEventArgs e, CheckState state) => PaintOver(e, state);
public void CallPaintUp(PaintEventArgs e, CheckState state) => PaintUp(e, state);
public LayoutOptions CallLayout(PaintEventArgs e) => Layout(e);
public ButtonBaseAdapter CallCreateButtonAdapter() => CreateButtonAdapter();
}

private static (TestRadioButton, TestRadioButtonFlatAdapter) CreateAdapter()
{
using TestRadioButton radioButton = new();
TestRadioButtonFlatAdapter radioButtonBaseAdapter = new(radioButton);

return (radioButton, radioButtonBaseAdapter);
}

[WinFormsFact]
public void PaintDown_ButtonAppearance_DelegatesToButtonFlatAdapter()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Button;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButtonBaseAdapter.CallPaintDown(e, CheckState.Checked);

bool anyPixelChanged = false;
Color defaultColor = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChanged; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChanged; y++)
{
if (bmp.GetPixel(x, y) != defaultColor)
{
anyPixelChanged = true;
}
}
}

anyPixelChanged.Should().BeTrue("PaintDown should modify the bitmap when Appearance is Button.");
}

[WinFormsFact]
public void PaintDown_RadioAppearance_EnabledAndDisabled_Draws()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Normal;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButton.Enabled = true;
radioButtonBaseAdapter.CallPaintDown(e, CheckState.Checked);

bool anyPixelChangedEnabled = false;
Color defaultColorEnabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedEnabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedEnabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorEnabled)
{
anyPixelChangedEnabled = true;
}
}
}

anyPixelChangedEnabled.Should().BeTrue("PaintDown should modify the bitmap when enabled and Appearance is Normal.");

using (Graphics clearG = Graphics.FromImage(bmp))
{
clearG.Clear(Color.Empty);
}

radioButton.Enabled = false;
radioButtonBaseAdapter.CallPaintDown(e, CheckState.Unchecked);

bool anyPixelChangedDisabled = false;
Color defaultColorDisabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedDisabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedDisabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorDisabled)
{
anyPixelChangedDisabled = true;
}
}
}

anyPixelChangedDisabled.Should().BeTrue("PaintDown should modify the bitmap when disabled and Appearance is Normal.");
}

[WinFormsFact]
public void PaintOver_ButtonAppearance_DelegatesToButtonFlatAdapter()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Button;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButtonBaseAdapter.CallPaintOver(e, CheckState.Checked);

bool anyPixelChanged = false;
Color defaultColor = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChanged; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChanged; y++)
{
if (bmp.GetPixel(x, y) != defaultColor)
{
anyPixelChanged = true;
}
}
}

anyPixelChanged.Should().BeTrue("PaintOver should modify the bitmap when Appearance is Button.");
}

[WinFormsFact]
public void PaintOver_RadioAppearance_EnabledAndDisabled_Draws()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Normal;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButton.Enabled = true;
radioButtonBaseAdapter.CallPaintOver(e, CheckState.Checked);

bool anyPixelChangedEnabled = false;
Color defaultColorEnabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedEnabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedEnabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorEnabled)
{
anyPixelChangedEnabled = true;
}
}
}

anyPixelChangedEnabled.Should().BeTrue("PaintOver should modify the bitmap when enabled and Appearance is Normal.");

using (Graphics clearG = Graphics.FromImage(bmp))
{
clearG.Clear(Color.Empty);
}

radioButton.Enabled = false;
radioButtonBaseAdapter.CallPaintOver(e, CheckState.Unchecked);

bool anyPixelChangedDisabled = false;
Color defaultColorDisabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedDisabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedDisabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorDisabled)
{
anyPixelChangedDisabled = true;
}
}
}

anyPixelChangedDisabled.Should().BeTrue("PaintOver should modify the bitmap when disabled and Appearance is Normal.");
}

[WinFormsFact]
public void PaintUp_ButtonAppearance_DelegatesToButtonFlatAdapter()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Button;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButtonBaseAdapter.CallPaintUp(e, CheckState.Checked);

bool anyPixelChanged = false;
Color defaultColor = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChanged; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChanged; y++)
{
if (bmp.GetPixel(x, y) != defaultColor)
{
anyPixelChanged = true;
}
}
}

anyPixelChanged.Should().BeTrue("PaintUp should modify the bitmap when Appearance is Button.");
}

[WinFormsFact]
public void PaintUp_RadioAppearance_EnabledAndDisabled_Draws()
{
(TestRadioButton radioButton, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
radioButton.Appearance = Appearance.Normal;
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

radioButton.Enabled = true;
radioButtonBaseAdapter.CallPaintUp(e, CheckState.Checked);

bool anyPixelChangedEnabled = false;
Color defaultColorEnabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedEnabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedEnabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorEnabled)
{
anyPixelChangedEnabled = true;
}
}
}

anyPixelChangedEnabled.Should().BeTrue("PaintUp should modify the bitmap when enabled and Appearance is Normal.");

using (Graphics clearG = Graphics.FromImage(bmp))
{
clearG.Clear(Color.Empty);
}

radioButton.Enabled = false;
radioButtonBaseAdapter.CallPaintUp(e, CheckState.Unchecked);

bool anyPixelChangedDisabled = false;
Color defaultColorDisabled = bmp.GetPixel(0, 0);
for (int x = 0; x < bmp.Width && !anyPixelChangedDisabled; x++)
{
for (int y = 0; y < bmp.Height && !anyPixelChangedDisabled; y++)
{
if (bmp.GetPixel(x, y) != defaultColorDisabled)
{
anyPixelChangedDisabled = true;
}
}
}

anyPixelChangedDisabled.Should().BeTrue("PaintUp should modify the bitmap when disabled and Appearance is Normal.");
}

[WinFormsFact]
public void Layout_SetsFlatCheckSizeAndShadowedText()
{
(_, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
using Bitmap bmp = new(20, 20);
using Graphics g = Graphics.FromImage(bmp);
using PaintEventArgs e = new(g, new Rectangle(0, 0, 20, 20));

LayoutOptions options = radioButtonBaseAdapter.CallLayout(e);

options.CheckSize.Should().Be(12);
options.ShadowedText.Should().BeFalse();
}

[WinFormsFact]
public void CreateButtonAdapter_ReturnsButtonFlatAdapter()
{
(_, TestRadioButtonFlatAdapter radioButtonBaseAdapter) = CreateAdapter();
ButtonBaseAdapter result = radioButtonBaseAdapter.CallCreateButtonAdapter();

result.Should().BeOfType<ButtonFlatAdapter>();
}
}