When the timeline is not found

twitter_timeline_hub_spec.rb

context 'when the timeline is not found' do
  it 'returns a result with no tweets and not_found status' do
    twitter_client = instance_double(Twitter::REST::Client)
    allow(twitter_client).to receive(:user_timeline)
      .with('screen_name', count: 5)
      .once { fail Twitter::Error::NotFound }

    twitter_hub = TwitterTimelineHub.new(twitter_client)
    result = twitter_hub.call('screen_name', count: 5)

    expect(result.status).to eq :not_found
    expect(result.tweets).to be_empty
  end
end