gistfile1.rb

class Job < ActiveRecord::Base
  has_many :waypoints
  has_many :pickup_addresses, :class_name => "Waypoint", :conditions => {:purpose => "PICK UP"}
  has_many :setdown_addresses, :class_name => "Waypoint", :conditions => {:purpose => "SET DOWN"}

  accepts_nested_attributes_for :waypoints
  accepts_nested_attributes_for :pickup_addresses
  accepts_nested_attributes_for :pickup_addresses
end

====

Jobs.yml

no_setdown:
  name: Test1
  phone: 04040404
  date: 2011-05-03
  time: 2001-05-03 10:34:34
  passengers: 2

====

Waypoints.yml

single_pickup:
  purpose: PICK UP
  street_number: 1
  location_name: Location
  suburb: Suburb
  friendly_name: bees
  street_type: pde
  job: no_setdown

====

class JobTest < ActiveSupport::TestCase

  test "must have a pickup address" do
    job = Job.new
    assert !job.save, "Saved a job without a pickup address"
  end

  test "must have a setdown address" do
    job = Job.new(jobs(:no_setdown))

    assert_equal(1, job.waypoints.count, job.waypoints)
  end

end