class Image
    include Mongoid::Document
    belongs_to :page
end

class Page
    include Mongoid::Document
    has_many :images
end

describe Mongoid do
    def check_inverse_relation
        i = Image.new
        i.save!
        p = Page.new
        i.page = p
        p.save!
        i.page.should_not be nil
        p.images.length.should == 1  # this fails with identity map enabled
    end

    it "works with identity map off" do
        Mongoid.identity_map_enabled = false
        check_inverse_relation
    end

    it "fails with idenity map on" do
        Mongoid.identity_map_enabled = true
        check_inverse_relation
    end
end