require File.expand_path("./helper", File.dirname(__FILE__))

class User < Ohm::Model
  collection :posts, :Post
end

class Post < Ohm::Model
  reference :user, :User
end

setup do
  u = User.create
  p = Post.create(:user => u)

  [u, p]
end

test "basic shake and bake" do |u, p|
  assert u.posts.include?(p)

  p = Post[p.id]
  assert_equal u, p.user
end

test "memoization" do |u, p|
  # This will read the user instance once.
  p.user
  assert_equal p.user, p.instance_variable_get(:@_memo)[:user]

  # This will un-memoize the user instance
  p.user = u
  assert_equal nil, p.instance_variable_get(:@_memo)[:user]
end