Add unit tests to System.Windows.Forms.Design.ControlDesigner

[JuditRose]

Add unit tests (if not exists) for

1. Methods:

• M:System.Windows.Forms.Design.ControlDesigner.#ctor
• M:System.Windows.Forms.Design.ControlDesigner.get_SelectionRules

2. Classes:

• System/ComponentModel/Design/DesignerActionListsChangedEventArgs.cs
• System/ComponentModel/Design/DesignerActionPanel.cs
• System/ComponentModel/Design/DesignerActionUIService.cs
• System/Windows/Forms/Design/BaseContextMenuStrip.cs
• System/Windows/Forms/Design/Behavior/ContainerSelectorBehavior.cs
• System/Windows/Forms/Design/Behavior/DragAssistanceManager.cs
• System/Windows/Forms/Design/Behavior/DropSourceBehavior.cs
• System/Windows/Forms/Design/Behavior/ResizeBehavior.cs
• System/Windows/Forms/Design/ControlDesigner.cs
• System/Windows/Forms/Design/DesignerActionPanel.cs
• System/Windows/Forms/Design/DesignerActionService.cs
• System/Windows/Forms/Design/DesignerActionUI.cs
• System/Windows/Forms/Design/DesignerFrame.cs
• System/Windows/Forms/Design/DesignerUtils.cs
• System/Windows/Forms/Design/FormDocumentDesigner.cs
• System/Windows/Forms/Design/ParentControlDesigner.cs
• System/Windows/Forms/Design/SelectionManager.cs
• System/Windows/Forms/Design/ToolStripAdornerWindowService.cs
• System/Windows/Forms/Design/ToolStripDesigner.cs
• System/Windows/Forms/Design/ToolStripDesignerUtils.cs
• System/Windows/Forms/Design/ToolStripDropDownDesigner.cs
• System/Windows/Forms/Design/ToolStripDropDownItemDesigner.cs
• System/Windows/Forms/Design/ToolStripEditorManager.cs
• System/Windows/Forms/Design/ToolStripInSituService.cs
• System/Windows/Forms/Design/ToolStripItemBehavior.cs
• System/Windows/Forms/Design/ToolStripItemDesigner.cs
• System/Windows/Forms/Design/ToolStripKeyboardHandlingService.cs
• System/Windows/Forms/Design/ToolStripMenuItemDesigner.cs（PR: 9868）
• System/Windows/Forms/Design/ToolStripTemplateNode.cs

Epic: #716
Related issues: #221, #653
Related PRs: #681

[brucremo]

Hello @JuditRose! I would like to help build those unit tests, could I work on them?? Thanks in advance!

[RussKie]

@brucremo that's awesome! Please go ahead.

/cc: @hughbe

[amd-9]

Is this issue still relevant?

[RussKie]

I'm pretty sure it is. #2376 and #2431 were abandoned.