In Class Challenge 9-18

require 'minitest/autorun'
require 'minitest/pride'

#I somehow overlooked this challenge. Submitting now on 9-21

class Goat

  attr_reader :name

  def initialize(name)
    @name = name
  end

  def self.number_of_legs
    4
  end

  private def hate_cats
    "I hate cats!"
  end
end

class ClassesChallenge < MiniTest::Test

  def test_class_exists
    assert Goat
  end

  def test_initialize
    assert Goat.new("Windsong")
  end

  def test_reader
    amalthea = Goat.new("Amalthea")
    assert_equal "Amalthea", amalthea.name
    assert_raises(NoMethodError) do
      amalthea.name = "Djali"
    end
  end

  def test_private
    billy = Goat.new("Billy Whiskers")
    assert_raises(NoMethodError) do
      billy.hate_cats
    end
    assert_equal "I hate cats!", billy.send(:hate_cats)
  end

  def test_class
    assert_equal 4, Goat.number_of_legs
  end
end