Unit testing an observable in Angular 2

Question

What is the correct way of unit testing a service returning an Observable result in Angular 2? Let\'s say we have a getCars method in a CarService service class:

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Answer 1

The way I've managed to get it to work is to subscribe and call done after the expects.

it('should equal bar', (done: any) => {
 bar.getFoo().subscribe(v => {
  expect(v).toBe('foo');
  done();
 });
});