Documentation
			REFERENCE
		t.maximizeWindow Method
Maximizes the browser window. Can be chained with other TestController methods.
t.maximizeWindow() → this | Promise<any>
The following example shows how to use the t.maximizeWindow action.
import { Selector } from 'testcafe';
const menu = Selector('#side-menu');
fixture `My fixture`
    .page `http://www.example.com/`;
test('Side menu is displayed in full screen', async t => {
    await t
        .maximizeWindow()
        .expect(menu.visible).ok();
});
You can also resize the window to fit specified dimensions with t.resizeWindow method and to fit specified type of device with t.resizeWindowToFitDevice