# encoding: utf-8

module Rubocop
  module Cop
    # Checks for multiple top level describes. They should be nested if it is
    # for the same class or module or seperated into different files.
    #
    # @example
    #   # bad
    #   describe MyClass, '.do_someting' do
    #   end
    #   describe MyClass, '.do_someting_else' do
    #   end
    #
    #   #good
    #   describe MyClass
    #     describe '.do_someting' do
    #     end
    #     describe '.do_someting_else' do
    #     end
    #   end
    class RSpecMultipleDescribes < Cop
      include RSpec::TopLevelDescribe

      MESSAGE = 'Do not use multiple top level describes - try to nest them.'

      def on_top_level_describe(node, _args)
        return if single_top_level_describe?
        return unless top_level_nodes.first == node

        add_offense(node, :expression, MESSAGE)
      end
    end
  end
end