Campaign Charlie - Anagram TDD

anagram.rb

class AnagramGenerator
    attr_reader :word
  def initialize(word)
    @word = word.downcase
  end

  def separate_word
    @separate_words = @word.split('')
  end

  def anagram_maker
    @anagrams = @separate_words.permutation.map(&:join)
  end

  def anagrams
    anagram_list = anagram_maker
    anagram_list.delete(@word)
    anagram_list
  end
end

anagrams_spec.rb

require 'rspec'
require_relative 'anagrams'

describe AnagramGenerator  do
  it 'should separate words into separate elements in an array' do
    anagrams = AnagramGenerator.new('dog')
    expect(anagrams.separate_word).to eql(['d', 'o', 'g'])
  end

  it 'should determine all possible combinations of word characters in the array' do
    anagrams = AnagramGenerator.new('dog')
    anagrams.separate_word
    expect(anagrams.anagram_maker).to eql(["dog","dgo", "odg", "ogd", "gdo", "god"])
  end

  it 'should return an empty array if the string is blank' do
    blank_anagram = AnagramGenerator.new('')
    blank_anagram.separate_word
    blank_anagram.anagram_maker
    expect(blank_anagram.anagrams).to eql([])
  end

  it 'should return an empty array if the string has one letter' do
    single_letter = AnagramGenerator.new('t')
    single_letter.separate_word
    single_letter.anagram_maker
    expect(single_letter.anagrams).to eql([])
  end

  it 'should return one anagram for a two letter word' do
    single_anagram = AnagramGenerator.new('to')
    single_anagram.separate_word
    single_anagram.anagram_maker
    expect(single_anagram.anagrams).to eql(['ot'])
  end

  it 'should cleave the root word from the list of anagrams' do
    anagrams = AnagramGenerator.new('dog')
    anagrams.separate_word
    anagrams.anagram_maker
    expect(anagrams.anagrams).to eql(["dgo", "odg", "ogd", "gdo", "god"])
  end
end