Test helper for painless record creation

gistfile1.rb

# Test helper for painless record creation. Details at:
#   http://roman.flucti.com/painless-record-creation-with-activerecord
#
def insert!(model, attributes={})
  attributes = attributes.stringify_keys
  begin
    record = model.new(attributes)
    def record.callback(*args)
      # inhibit all callbacks
    end
    record.save(false)
  rescue ActiveRecord::StatementInvalid
    if $!.message =~ /Column '(.+?)' cannot be null/
      unless attributes.key?($1)
        attributes[$1] = record.column_for_attribute($1).number? ? 0 : ""
        retry
      end
    end
    raise
  end
  return record
end