passing test

libraries/kcpassword.rb

@@ -1,14 +1,12 @@
 module KcpasswordHelpers
-  class Kcpassword << self
-    def magic_bits
-      [125, 137, 82, 35, 210, 188, 221, 234, 163, 185, 31]
-    end
+  module Kcpassword
+    @magic_bits = [125, 137, 82, 35, 210, 188, 221, 234, 163, 185, 31]
 
     def obfuscate(password)
       obfuscated = []
       padded(password).each do |char|
         obfuscated.push(@magic_bits[0] ^ char)
-        @magic_bits.rotate
+        @magic_bits.rotate!
       end
       obfuscated.pack('C*')
     end
@@ -28,5 +26,5 @@ module KcpasswordHelpers
   end
 end unless defined?(KcpasswordHelpers)
 
-Chef::Recipe.include(KcpasswordHelpers)
-Chef::Resource.include(KcpasswordHelpers)
+Chef::Recipe.include(KcpasswordHelpers::Kcpassword)
+Chef::Resource.include(KcpasswordHelpers::Kcpassword)

spec/spec_helper.rb

@@ -3,3 +3,4 @@ require 'chefspec/berkshelf'
 
 require_relative '../libraries/plistbuddy'
 require_relative '../libraries/xcode'
+require_relative '../libraries/kcpassword'

spec/unit/libraries/kcpassword_spec.rb

@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+include KcpasswordHelpers::Kcpassword
+
+describe KcpasswordHelpers::Kcpassword, '#obfuscate' do
+  context 'When calling the obfuscate method' do
+    it 'the password is obfuscated correctly' do
+      expect(KcpasswordHelpers::Kcpassword.obfuscate('password')).to eq "\r\xE8!P\xA5\xD3\xAF\x8E\xA3\xB9\x1F".force_encoding('ASCII-8BIT')
+    end
+  end
+end