anagram.rb

require 'pry-debugger'
class Anagram

	attr_reader :word 

	def initialize(word)
		@word = word
	end

	def letters
		@word.split('')
	end

	def anagrams
		anagrams = []
		words = letters.permutation.to_a
		words.each do |word|
			anagrams << word.join
		end
		anagrams
	end
end

anagram = Anagram.new('dog')
anagram.letters
puts anagram.anagrams

anagram_spec.rb

require 'rspec'
require_relative 'anagram'

describe Anagram do

	it 'generates an array of anagrams' do
		expect(Anagram.new('dog').anagrams).to include('dgo','odg','ogd','god','gdo')
	end

end