function test_Tab() {
  var tab: Tab = new Tab();
  tab.set("foo", 23);
  tab.set({
    badge: "foo",
    title: "bar",
    image: {src: "http://example.org"}
  });
  var folder = new TabFolder();
  tab.appendTo(folder);
}

import {Tab, Composite, WidgetCollection, Button} from 'tabris';

let widget: Tab = new Tab();
widget.appendTo(new Composite());
widget.insertBefore(new Composite());
widget.insertAfter(new Composite());

/*Expected
(4,
not assignable to parameter
(5,
not assignable to parameter
(6,
not assignable to parameter
*/

import {ColorValue, ImageValue, Properties, Tab, TabFolder, WidgetCollection} from 'tabris';

let widget: Tab = new Tab();

// Properties
let badge: number;
let image: ImageValue;
let selectedImage: ImageValue;
let title: string;
let nullValue: null;
let badgeColor: ColorValue;

badge = widget.badge;
image = widget.image as ImageValue;
nullValue = widget.image as null;
selectedImage = widget.selectedImage as ImageValue;
nullValue = widget.selectedImage as null;
title = widget.title;
badgeColor = widget.badgeColor;

widget.badge = badge;
widget.image = image;
widget.image = nullValue;
widget.selectedImage = selectedImage;
widget.selectedImage = nullValue;
widget.title = title;
widget.badgeColor = badgeColor;

let properties: Properties<Tab> = {badge, image, selectedImage, title, badgeColor};
widget = new Tab(properties);
widget.set(properties);