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Zheng-Li01Zheng-Li01
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Add code coverage for CheckBoxBaseAdapter (#13752)
* Add code coverage for CheckBoxBaseAdapter * Address FeedBacks * Address FeedBacks
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‎src/test/unit/System.Windows.Forms/System/Windows/Forms/CheckBoxBaseAdapterTests.cs‎

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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using System.Drawing;
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using System.Windows.Forms.ButtonInternal;
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namespace System.Windows.Forms.Tests;
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public class CheckBoxBaseAdapterTests : IDisposable
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{
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private TestCheckBox? _checkBox;
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private (TestCheckBoxBaseAdapter, TestCheckBox) CreateAdapter(CheckState checkState)
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{
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_checkBox = new TestCheckBox
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{
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CheckState = checkState
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};
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TestCheckBoxBaseAdapter adapter = new(_checkBox);
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return (adapter, _checkBox);
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}
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public void Dispose() => _checkBox?.Dispose();
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private class TestCheckBox : CheckBox
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{
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public new bool Enabled
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{
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get => base.Enabled;
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set => base.Enabled = value;
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}
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public new CheckState CheckState
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{
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get => base.CheckState;
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set => base.CheckState = value;
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}
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}
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private class TestCheckBoxBaseAdapter : CheckBoxBaseAdapter
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{
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public TestCheckBoxBaseAdapter(ButtonBase control) : base(control) { }
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public void CallDrawCheckFlat(
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PaintEventArgs e,
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LayoutData layout,
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Color checkColor,
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Color checkBackground,
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Color checkBorder,
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ColorData colors)
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=> DrawCheckFlat(e, layout, checkColor, checkBackground, checkBorder, colors);
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protected override LayoutOptions Layout(PaintEventArgs e)
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=> new LayoutOptions();
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protected override ButtonBaseAdapter CreateButtonAdapter()
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=> new StubButtonBaseAdapter(Control);
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private class StubButtonBaseAdapter : ButtonBaseAdapter
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{
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public StubButtonBaseAdapter(ButtonBase control) : base(control) { }
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internal override void PaintUp(PaintEventArgs e, CheckState state) { }
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internal override void PaintDown(PaintEventArgs e, CheckState state) { }
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internal override void PaintOver(PaintEventArgs e, CheckState state) { }
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protected override LayoutOptions Layout(PaintEventArgs e) => new LayoutOptions();
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}
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internal override void PaintOver(PaintEventArgs e, CheckState state)
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{
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}
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internal override void PaintDown(PaintEventArgs e, CheckState state)
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{
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}
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internal override void PaintUp(PaintEventArgs e, CheckState state)
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{
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}
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}
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private static ButtonBaseAdapter.LayoutData CreateLayoutData(bool dotNetOneButtonCompat = false)
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{
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ButtonBaseAdapter.LayoutData layout = new(
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new ButtonBaseAdapter.LayoutOptions
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{
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DotNetOneButtonCompat = dotNetOneButtonCompat
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})
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{
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CheckBounds = new Rectangle(2, 2, 11, 11)
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};
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return layout;
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}
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private static ButtonBaseAdapter.ColorData CreateColorData(Graphics graphics)
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{
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ButtonBaseAdapter.ColorOptions options = new(
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graphics,
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Color.Black,
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Color.White
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);
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ButtonBaseAdapter.ColorData colorData = new(options)
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{
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ButtonFace = Color.LightGray,
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ButtonShadow = Color.Gray,
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Highlight = Color.Yellow
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};
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return colorData;
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}
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[WinFormsTheory]
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[InlineData(CheckState.Unchecked, false)]
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[InlineData(CheckState.Checked, false)]
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[InlineData(CheckState.Indeterminate, false)]
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[InlineData(CheckState.Unchecked, true)]
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[InlineData(CheckState.Checked, true)]
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[InlineData(CheckState.Indeterminate, true)]
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public void DrawCheckFlat_DoesNotThrow(CheckState checkState, bool dotNetOneButtonCompat)
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{
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(TestCheckBoxBaseAdapter adapter, TestCheckBox checkBox) = CreateAdapter(checkState);
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using Bitmap bitmap = new(20, 20);
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using Graphics graphics = Graphics.FromImage(bitmap);
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using PaintEventArgs e = new(graphics, new Rectangle(0, 0, 20, 20));
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ButtonBaseAdapter.LayoutData layout = CreateLayoutData(dotNetOneButtonCompat);
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Color checkColor = Color.Black;
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Color checkBackground = Color.White;
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Color checkBorder = Color.Blue;
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ButtonBaseAdapter.ColorData colors = CreateColorData(graphics);
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Exception? ex = Record.Exception(() =>
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adapter.CallDrawCheckFlat(e, layout, checkColor, checkBackground, checkBorder, colors));
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ex.Should().BeNull();
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}
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[WinFormsTheory]
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[InlineData(false, CheckState.Unchecked, false, 0)]
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[InlineData(false, CheckState.Unchecked, true, 1)]
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[InlineData(true, CheckState.Indeterminate, true, 2)]
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public void DrawCheckBackground_CoversAllBranches(
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bool controlEnabled,
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CheckState checkState,
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bool disabledColors,
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int expectedBranch)
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{
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Rectangle bounds = new(1, 2, 3, 4);
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using Bitmap bitmap = new(10, 10);
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using Graphics graphics = Graphics.FromImage(bitmap);
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Color checkBackground = expectedBranch == 2 ? SystemColors.Window : Color.Red;
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Exception? ex = Record.Exception(() =>
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CheckBoxBaseAdapter.DrawCheckBackground(
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controlEnabled,
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checkState,
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graphics,
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bounds,
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checkBackground,
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disabledColors));
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ex.Should().BeNull();
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}
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[WinFormsTheory]
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[InlineData(CheckState.Checked, true, true)]
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[InlineData(CheckState.Checked, false, true)]
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[InlineData(CheckState.Indeterminate, true, true)]
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[InlineData(CheckState.Indeterminate, false, true)]
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[InlineData(CheckState.Unchecked, true, false)]
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public void DrawCheckOnly_Protected_DoesNotThrow(
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CheckState checkState,
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bool enabled,
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bool isChecked)
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{
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(TestCheckBoxBaseAdapter adapter, TestCheckBox checkBox) = CreateAdapter(checkState);
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checkBox.Enabled = enabled;
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checkBox.Checked = isChecked;
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using Bitmap bitmap = new(20, 20);
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using Graphics graphics = Graphics.FromImage(bitmap);
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using PaintEventArgs e = new(graphics, new Rectangle(0, 0, 20, 20));
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ButtonBaseAdapter.LayoutData layout = CreateLayoutData();
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ButtonBaseAdapter.ColorData colors = CreateColorData(graphics);
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Color checkColor = Color.Black;
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Exception? ex = Record.Exception(() =>
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adapter.TestAccessor().Dynamic.DrawCheckOnly(
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e,
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layout,
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colors,
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checkColor));
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ex.Should().BeNull();
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}
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[WinFormsFact]
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public void DrawPopupBorder_DoesNotThrow_AndInflatesRectangle()
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{
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using Bitmap bitmap = new(20, 20);
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using Graphics graphics = Graphics.FromImage(bitmap);
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Rectangle original = new(2, 2, 10, 10);
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ButtonBaseAdapter.ColorData colors = CreateColorData(graphics);
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Rectangle result = CheckBoxBaseAdapter.DrawPopupBorder(graphics, original, colors);
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Rectangle expected = original;
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expected.Inflate(-1, -1);
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result.Should().Be(expected);
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}
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[WinFormsFact]
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public void DrawPopupBorder_PaintEventArgs_DoesNotThrow_AndInflatesRectangle()
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{
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using Bitmap bitmap = new(20, 20);
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using Graphics graphics = Graphics.FromImage(bitmap);
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Rectangle original = new(3, 3, 8, 8);
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ButtonBaseAdapter.ColorData colors = CreateColorData(graphics);
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using PaintEventArgs e = new(graphics, new Rectangle(0, 0, 20, 20));
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Rectangle result = CheckBoxBaseAdapter.DrawPopupBorder(e, original, colors);
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Rectangle expected = original;
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expected.Inflate(-1, -1);
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result.Should().Be(expected);
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}
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[WinFormsFact]
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public void DrawPopupBorder_HDC_DoesNotThrow_AndInflatesRectangle()
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{
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using Bitmap bitmap = new(20, 20);
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using Graphics graphics = Graphics.FromImage(bitmap);
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Rectangle original = new(4, 4, 6, 6);
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ButtonBaseAdapter.ColorData colors = CreateColorData(graphics);
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IntPtr hdcPtr = graphics.GetHdc();
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try
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{
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Rectangle result = CheckBoxBaseAdapter.DrawPopupBorder(
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new HDC(hdcPtr),
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original,
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colors);
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Rectangle expected = original;
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expected.Inflate(-1, -1);
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result.Should().Be(expected);
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}
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finally
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{
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graphics.ReleaseHdc(hdcPtr);
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}
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}
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[Theory]
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[InlineData(null, true, 2, 2, 10, 10)]
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[InlineData("", true, 2, 2, 10, 10)]
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[InlineData(null, false, 2, 2, 10, 10)]
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[InlineData("", false, 2, 2, 10, 10)]
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public void AdjustFocusRectangle_SetsFocusAsExpected(
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string? text,
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bool autoSize,
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int checkX, int checkY, int checkW, int checkH)
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{
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(TestCheckBoxBaseAdapter adapter, TestCheckBox checkBox) = CreateAdapter(CheckState.Unchecked);
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checkBox.Text = text;
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checkBox.AutoSize = autoSize;
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ButtonBaseAdapter.LayoutData layout = new(new ButtonBaseAdapter.LayoutOptions())
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{
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CheckBounds = new Rectangle(checkX, checkY, checkW, checkH),
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Field = new Rectangle(5, 5, 20, 20)
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};
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adapter.TestAccessor().Dynamic.AdjustFocusRectangle(layout);
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if (string.IsNullOrEmpty(text))
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{
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if (autoSize)
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{
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Rectangle expected = Rectangle.Inflate(layout.CheckBounds, -2, -2);
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layout.Focus.Should().Be(expected);
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}
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else
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{
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layout.Focus.Should().Be(new Rectangle(5, 5, 20, 20));
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}
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}
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else
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{
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layout.Focus.Should().Be(default);
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}
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}
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}

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