it('should emit error when observable emits error', (done) => {
const result = Rx.Observable.throwError(new Error('error'));
const subscriber = new OuterSubscriber(x => {
done(new Error('should not be called'));
}, (err) => {
expect(err).to.be.an('error', 'error');
done();
}, () => {
done(new Error('should not be called'));
});
subscribeToResult(subscriber, result);
});