orange_tree.rb

# This is how you define your own custom exception classes
require 'pry'

class NoOrangesError < StandardError
end

class OrangeTree
attr_accessor :age, :height, :harvest

  def initialize
    @age = 0
    @height = 0
    @harvest = []
  end
  # Ages the tree one year
  def age!
    unless dead?
      self.age += 1
      self.height += 3 unless height >= 12
    end
    grow_oranges if age > 3
  end

  def age=(age)
    @age = age
  end

  # Returns +true+ if there are any oranges on the tree, +false+ otherwise
  def any_oranges?
    harvest.any?
  end

  def dead?
    age > 25
  end

  # Returns an Orange if there are any
  # Raises a NoOrangesError otherwise
  def pick_an_orange!
    raise NoOrangesError, "This tree has no oranges" unless self.any_oranges?
    harvest.pop
  end

  private
  def grow_oranges
    if !dead?
      (age * 3).times { harvest.push(Orange.new) }
    else dead?
      "I'm sorry to inform you that your tree is dead."
    end
  end
end

class Orange
  attr_reader :diameter
  # Initializes a new Orange with diameter +diameter+
  def initialize(diameter = rand(2..10) )
    @diameter = diameter
  end

  # def +(integer)
  #   self.diameter + integer
  # end
end


tree = OrangeTree.new

tree.age! until tree.any_oranges?

puts "Tree is #{tree.age} years old and #{tree.height} feet tall"

until tree.dead?
  basket = []

  # It places the oranges in the basket
  # IT PLACES THE ORANGES IN THE BASKET
  while tree.any_oranges?
    basket << tree.pick_an_orange!
  end

  avg_diameter = basket.map{|orange| orange.diameter}.inject(:+) / basket.length# It's up to you to calculate the average diameter for this harvest.

  puts "Year #{tree.age} Report"
  puts "Tree height: #{tree.height} feet"
  puts "Harvest:     #{basket.size} oranges with an average diameter of #{avg_diameter} inches"
  puts ""

  # Age the tree another year
  tree.age!
end

puts "Alas, the tree, she is dead!"

orange_tree_rspec.rb

require "rspec"
require_relative "orange_tree"

describe OrangeTree do 
  let(:orange_tree) { OrangeTree.new("0", "0")}
  
  context "#initialize" do
    it "creates an OrangeTree object" do
      orange_tree.should_be_an_instance_of OrangeTree
    end
  end
  
  context "#any_oranges?" do
    it "calls #harvest.any?" do
      orange_tree.harvest_any?.should eq "true if harvest_any?"
    end
  end
    
  context "#dead?" do
    it "returns the tree.age" do
      tree.dead == true "if tree.age > 25"
    end
  end
end