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Add code coverage for TabOrder (#13181)
* Add code coverage for TabOrder Related #10773
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  • src/System.Windows.Forms.Design/tests/UnitTests/System/Windows/Forms/Design

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‎src/System.Windows.Forms.Design/tests/UnitTests/System/Windows/Forms/Design/TabOrderTests.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.ComponentModel;
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using System.ComponentModel.Design;
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using System.Drawing;
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using System.Globalization;
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using Moq;
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namespace System.Windows.Forms.Design.Tests;
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public class TabOrderTests : IDisposable
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{
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private readonly Mock<IDesignerHost> _mockHost;
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private readonly Mock<IUIService> _mockUIService;
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private readonly Mock<IOverlayService> _mockOverlayService;
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private readonly Mock<IHelpService> _mockHelpService;
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private readonly Mock<IMenuCommandService> _mockMenuCommandService;
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private readonly Mock<IEventHandlerService> _mockEventHandlerService;
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private readonly Mock<IComponentChangeService> _mockComponentChangeService;
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private readonly Font _dialogFont;
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private readonly TabOrder _tabOrder;
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public Mock<IComponent> ComponentMock { get; }
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public Mock<Control> ControlMock { get; }
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public TabOrderTests()
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{
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_mockHost = new();
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_mockUIService = new();
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_mockOverlayService = new();
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_mockHelpService = new();
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_mockMenuCommandService = new();
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_mockEventHandlerService = new();
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_mockComponentChangeService = new();
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_mockHost.Setup(h => h.GetService(typeof(IUIService))).Returns(_mockUIService.Object);
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_mockHost.Setup(h => h.GetService(typeof(IOverlayService))).Returns(_mockOverlayService.Object);
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_mockHost.Setup(h => h.GetService(typeof(IHelpService))).Returns(_mockHelpService.Object);
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_mockHost.Setup(h => h.GetService(typeof(IMenuCommandService))).Returns(_mockMenuCommandService.Object);
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_mockHost.Setup(h => h.GetService(typeof(IEventHandlerService))).Returns(_mockEventHandlerService.Object);
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_mockHost.Setup(h => h.GetService(typeof(IComponentChangeService))).Returns(_mockComponentChangeService.Object);
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_dialogFont = new("Arial", 8);
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_mockUIService.Setup(u => u.Styles["DialogFont"]).Returns(_dialogFont);
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_tabOrder = new(_mockHost.Object);
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ComponentMock = new();
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ControlMock = new();
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}
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public void Dispose()
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{
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_dialogFont.Dispose();
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_tabOrder.Dispose();
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}
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[WinFormsFact]
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public void TabOrder_Constructor_InitializesFieldsCorrectly()
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{
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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_tabOrder.Should().NotBeNull();
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((Font)accessor._tabFont).Should().Be(new Font(_dialogFont, FontStyle.Bold));
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((int)accessor._selSize).Should().Be(DesignerUtils.GetAdornmentDimensions(AdornmentType.GrabHandle).Width);
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((SolidBrush)accessor._highlightTextBrush).Color.Should().Be(SystemColors.HighlightText);
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((Pen)accessor._highlightPen).Color.Should().Be(SystemColors.Highlight);
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((string)accessor._decimalSep).Should().Be(CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator);
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((object)accessor._commands).Should().NotBeNull();
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((object)accessor._newCommands).Should().NotBeNull();
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_mockOverlayService.Verify(os => os.PushOverlay(_tabOrder), Times.Once);
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_mockHelpService.Verify(hs => hs.AddContextAttribute("Keyword", "TabOrderView", HelpKeywordType.FilterKeyword), Times.Once);
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_mockMenuCommandService.Verify(mcs => mcs.AddCommand(It.IsAny<MenuCommand>()), Times.Exactly(((MenuCommand[])accessor._newCommands).Length));
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_mockEventHandlerService.Verify(ehs => ehs.PushHandler(_tabOrder), Times.Once);
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_mockComponentChangeService.VerifyAdd(cs => cs.ComponentAdded += It.IsAny<ComponentEventHandler>(), Times.Once);
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_mockComponentChangeService.VerifyAdd(cs => cs.ComponentRemoved += It.IsAny<ComponentEventHandler>(), Times.Once);
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_mockComponentChangeService.VerifyAdd(cs => cs.ComponentChanged += It.IsAny<ComponentChangedEventHandler>(), Times.Once);
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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}
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[WinFormsFact]
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public void OnMouseDoubleClick_DoesNotThrowException()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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Record.Exception(() => _tabOrder.OnMouseDoubleClick(ComponentMock.Object)).Should().BeNull();
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}
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[WinFormsFact]
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public void OnMouseDown_SetsNextTabIndex_WhenCtlHoverIsNotNull()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._ctlHover = ControlMock.Object;
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_tabOrder.OnMouseDown(ComponentMock.Object, MouseButtons.Left, 0, 0);
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((object)accessor._ctlHover).Should().NotBeNull();
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accessor.SetNextTabIndex(ControlMock.Object);
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}
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[WinFormsFact]
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public void OnMouseHover_DoesNotThrowException()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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Record.Exception(() => _tabOrder.OnMouseHover(ComponentMock.Object)).Should().BeNull();
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}
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[WinFormsFact]
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public void OnMouseMove_SetsNewHoverControl()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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List<Control> tabControls = new() { ControlMock.Object };
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._tabControls = tabControls;
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_tabOrder.OnMouseMove(ComponentMock.Object, 10, 10);
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((object)accessor._ctlHover).Should().Be(ControlMock.Object.ToString());
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}
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[WinFormsFact]
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public void OnMouseUp_DoesNotThrowException()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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Record.Exception(() => _tabOrder.OnMouseUp(ComponentMock.Object, MouseButtons.Left)).Should().BeNull();
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}
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[WinFormsFact]
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public void OnSetCursor_DoesNotThrowException()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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Record.Exception(() => _tabOrder.OnSetCursor(ComponentMock.Object)).Should().BeNull();
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}
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[WinFormsFact]
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public void OnSetCursor_SetsAppropriateCursor()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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_tabOrder.OnSetCursor(ComponentMock.Object);
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Cursor.Current.Should().Be(Cursors.Default);
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accessor._ctlHover = new Control();
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_tabOrder.OnSetCursor(ComponentMock.Object);
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Cursor.Current.Should().Be(Cursors.Cross);
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}
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[WinFormsFact]
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public void OverrideInvoke_CommandExists_InvokesCommandAndReturnsTrue()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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CommandID commandID = new(Guid.NewGuid(), 1);
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MenuCommand menuCommand = new((sender, e) => { }, commandID);
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._commands = new MenuCommand[]
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{
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menuCommand
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};
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_tabOrder.OverrideInvoke(menuCommand).Should().BeTrue();
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menuCommand.Invoke();
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}
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[WinFormsFact]
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public void OverrideInvoke_CommandDoesNotExist_ReturnsFalse()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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CommandID commandID = new(Guid.NewGuid(), 1);
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Mock<MenuCommand> mockCommand = new(null!, commandID);
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._commands = new MenuCommand[]
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{
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new MenuCommand((sender, e) => { }, new CommandID(Guid.NewGuid(), 2))
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};
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_tabOrder.OverrideInvoke(mockCommand.Object).Should().BeFalse();
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mockCommand.Verify(c => c.Invoke(), Times.Never);
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}
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[WinFormsFact]
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public void OverrideStatus_CommandDoesNotExist_DisablesCommandAndReturnsTrue()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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CommandID commandID = new(Guid.NewGuid(), 1);
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Mock<MenuCommand> mockCommand = new(null!, commandID);
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._commands = new MenuCommand[]
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{
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new MenuCommand((sender, e) => { }, new CommandID(Guid.NewGuid(), 2)) { Enabled = true }
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};
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_tabOrder.OverrideStatus(mockCommand.Object).Should().BeTrue();
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mockCommand.Object.Enabled.Should().BeFalse();
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}
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[WinFormsFact]
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public void OverrideStatus_TabOrderCommand_DisablesCommandAndReturnsTrue()
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{
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_tabOrder.CreateControl();
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_tabOrder.IsHandleCreated.Should().BeTrue();
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CommandID commandID = StandardCommands.TabOrder;
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Mock<MenuCommand> mockCommand = new(null!, commandID);
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dynamic accessor = _tabOrder.TestAccessor().Dynamic;
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accessor._commands = new MenuCommand[]
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{
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new MenuCommand((sender, e) => { }, new CommandID(Guid.NewGuid(), 2)) { Enabled = true }
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};
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_tabOrder.OverrideStatus(mockCommand.Object).Should().BeTrue();
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mockCommand.Object.Enabled.Should().BeFalse();
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}
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}

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