Actual integration spec from a live coding session at Launch Academy. No planets were harmed in the fulfillment of this acceptance criteria.

create_planet_destruction_event_spec.rb

require 'spec_helper'

describe 'creating a planet destruction event' do
  # As a grand moff of mass destruction
  # I want to record planet destruction events
  # So that I can demonstrate imperial awesomeness

  # Acceptance Criteria
  # * I must specify a planet name, star system, casualty count,
  # and description
  # * I get a congratulations that my planet destruction event was recorded

  it 'creates a valid event when all required attribute are specified' do
    prev_count = PlanetDestructionEvent.count

    # I navigate to the new planet destruction event form
    visit '/planet_destruction_events/new'

    # I fill in required fields
    fill_in "Planet name", with: 'Alderaan'
    fill_in "Star system", with: 'Alderaan'
    fill_in "Casualties", with: '300000000'
    fill_in "Description", with: 'Oops! My bad!'

    # I submit the form
    click_button 'Create Planet destruction event'

    # I verify that the destruction event was recorded
    expect(PlanetDestructionEvent.count).to eql(prev_count + 1)
    expect(page).to have_content('created')
  end

  it 'does not create an event when I miss a required attribute' do
    prev_count = PlanetDestructionEvent.count

    visit '/planet_destruction_events/new'

    click_button 'Create Planet destruction event'

    expect(PlanetDestructionEvent.count).to eql(prev_count)
    expect(page).to have_content("can't be blank")
  end
end