pseudo code

gistfile1.rb

context "when the service is down" do
  before do
    SomeService.stub(:get).and_raise(BadResponseError)
  end
  
  it "should show a friendly error message" do
    visit '/some-url'
    click_link 'Tab 2'
    
    page.find("#loading_indicator").should_not_be_visible
    within ".error-container" do
      find('.message').should have_text("We're sorry, an error occurred")
    end
    page.save_screenshot("screenshot.png")
  end
end