Test Activity bar and Panels bar

[sandy081]

Refs: #49103 #48580

• anyOS: @alexandrudima
• anyOS: @mjbvz

Complexity: 4

Order & Visibility

• Open VS Code and change the order and visibility of the items in the Activity bar and Panels bar
• Make sure that the items in the context menu (when clicked on empty space in activity bar / panel bar) are in the same order as they are shown.
• Reload the window and make sure that order and visibility are retained

Custom view containers

• Register a view container in activity bar using viewsContainers extension point. For example:

"contributes": {
	"viewsContainers": {
		"activitybar": [
                        {
			    "id": "test",
			    "title": "Test",
			     "icon": "resources/test.svg"
		        }
                  ]
	}
}

• Add views to the above registered view container. For example:

"contributes": {
	"views": {
		"test": [
			{
				"id": "myview",
				"name": "My View"
			}
		]
	}
}

• You can implement the view by referring to documentation and [samples] (https://github.com/Microsoft/vscode-extension-samples/tree/master/tree-view-sample).
• Make sure that registered view container icon in the activity bar does not flicker on window reload (See The delay when loading contributed viewContainers looks unpolished #48580)
• This only flickers only once after when the extension is disabled or enabled.
• Add couple of more view containers and reduce the height of the window. Make sure that activity bar items gets moved into ... menu depending on the space available in the activity bar.
• Make sure that Active viewlet is the last to be moved into ... menu.

General Testing

• Make sure that Toggle Search View Position command is toggling Search view between Sidebar and Panel.
• Click on the Activity bar / Panel bar items and make sure that Views are opening correctly.

Migration Testing

• Open the Stable version of VS Code 1.23.*
• Change the order and visibility of the items in the Activity bar and Panels bar
• Download new Stable version from win64, mac, Others. Make sure that order and visibility are retained.