require 'rails_helper'

RSpec.describe Ingredient, type: :model do

  describe 'validation' do

    it 'validates density' do
      i = build(:ingredient)
      expect(i).to be_valid

      i.density = '5'
      expect(i).not_to be_valid

      i.density = '5 cup'
      expect(i).not_to be_valid

      i.density = '5 gram/cup'
      expect(i).to be_valid

      i.density = '5 mile/hour'
      expect(i).not_to be_valid
    end

  end

end