dynamic spec

# something like ...
# I think this goes in specs/support/whatever.rb

def it_should_be_invalid_without(*fields)
  object_name = described_class.name.underscore  
  fields.each do |field|
    it "should fail if #{field} is missing" do
      instance_variable_get("@#{object_name}").send(:"#{field}=", nil)
      instance_variable_get("@#{object_name}").should_not be_valid_for_create
    end
  end
end

# and you use this in your specs...

it_should_be_invalid_without :title,
                             :first_name,  :last_name, 
                             :country_id,  :address1, 
                             :address3,    :postcode, 
                             :username,    :email,
                             :password,    :password_confirmation,     
                             :currency_id, 
                             :security_question_id1, 
                             :security_question_answer1

gistfile2.txt