Mongoid.configure do |config|
  config.clients.default = {
    hosts: ['localhost:27017'],
    database: 'mongoid_test',
  }
end

class Ubicacion
  include Mongoid::Document

  store_in collection: "ubicaciones"

  field :descripcion
end

class Almacenamiento < Ubicacion
  field :capacidad, type: Integer
end

class Contenedor < Ubicacion
  # no Mongoid stuff here, just domain-specific behavior
end

class Celda < Almacenamiento
  field :x, type: Integer
  field :y, type: Integer

  belongs_to :rack, class_name: "Rack"
end

class Rack < Contenedor
  has_many :celdas, class_name: Celda, inverse_of: :rack
end

Benchmark.bm do |r|
  r.report("save!") do
    10.times do
      rack = Rack.new(descripcion: "Rack")
      rack.save!
      (0...15).each do |x|
        (0...15).each do |y|
          celda = Celda.new(x:, y:, rack:)
          rack.celdas << celda
          celda.save!
        end
      end
    end
  end
end