gistfile1.rb

module EachActual
  class Proxy
    def initialize(collection, attr = nil)
      @actual = attr ? collection.map(&:attr) : collection
    end

    def should(matcher = nil)
      @actual.each do |obj|
        obj.should matcher
      end
    end

    def should_not(matcher = nil)
      @actual.each do |obj|
        obj.should_not matcher
      end
    end
  end

  def each_of(collection)
    Proxy.new(collection)
  end
end

describe Array do
  include EachActual
  let(:array) { [*(0..9)] }

  specify { each_of(array).should be_instance_of(Fixnum) }
  specify { each_of(array).should_not be_nil }
end

operator matcher is not supported :-<