Contents

#
# h2. spec/imw/matchers/without_regard_to_order_matcher.rb -- set matcher for non-sets
#
# == About
#
# A simple matcher which compares two objects as though they were
# sets, i.e. - without regard to the order of their elements.
#
# Author::    (Philip flip Kromer, Dhruv Bansal) for Infinite Monkeywrench Project (mailto:[e-mail])
# Copyright:: Copyright (c) 2008 infochimps.org
# License::   GPL 3.0
# Website::   http://infinitemonkeywrench.org/
# 

require 'set'
require 'imw/utils'

module Spec
  module Matchers
    module IMW

      # Match the contents of two arrays without regard to the order
      # of their elements by treating each as a set.
      class WithoutRegardToOrder

        private
        def initialize known_array
          @known_array = known_array.to_set
        end

        public
        def matches? array_to_test
          @array_to_test = array_to_test.to_set
          @array_to_test == @known_array
        end

        def failure_message
          missing_from_array_to_test = "missing from array to test: #{(@known_array - @array_to_test).to_a.quote_items_with "and"}\n"
          missing_from_known_array = "missing from known array: #{(@array_to_test - @known_array).to_a.quote_items_with "and"}\n"
          common_to_both = "common to both: #{(@array_to_test & @known_array).to_a.quote_items_with "and"}\n"
          "expected contents of the arrays to be identical:\n\n#{missing_from_array_to_test}\n#{missing_from_known_array}\n#{common_to_both}"
        end

        def negative_failure_message
          "expected contents of the arrays to differ."
        end
      end

      # Check that the contents of one array match another without
      # regard to ordering.
      def match_without_regard_to_order known_array
        WithoutRegardToOrder.new(known_array)
      end
    end
  end
end

# puts "#{File.basename(__FILE__)}: The leg bone's connected to the...knee bone, the knee bone's connected...wait, isn't it the other way 'round?" # at bottom

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
imw-0.2.1	spec/support/without_regard_to_order_matcher.rb
imw-0.2.0	spec/support/without_regard_to_order_matcher.rb
imw-0.1.1	spec/support/without_regard_to_order_matcher.rb
imw-0.1.0	spec/support/without_regard_to_order_matcher.rb