Scenario: Switch to a new window, close the new window and switch back to the old window.
Let’s take a look at how to do that –
I’ll be using this test site for our example.

describe('New Tab', () => {
it('should be able to switch to a new tab', () => {
// find selector
const link = $('.example a');
// access the page
browser.url('/windows');
// click on the link to open a new window
link.click();
// switch window
browser.switchWindow('/windows/new');
// optional assertion
expect(browser).toHaveTitle('New Window');
});
it('should close the new tab and switch back to old tab', () => {
// close new window
browser.closeWindow();
// switch back to old window
browser.switchWindow('/windows');
// optional assertion
expect(browser).toHaveTitle('The Internet');
});
});
? You can also find this example on GitHub.