Fixed the tree. :-0

lib/tree.rb

@@ -1,38 +1,61 @@
 class NoApplesError < StandardError; end
 
 class Tree
-  attr_#fill_in :height, :age, :apples, :alive
+  attr_reader :height, :age, :apples, :alive
 
   def initialize
+    @age = 0
+    @height = 0
+    @apples = []
+    @alive = true
   end
 
   def age!
+    @age += 1
+    @height += 2
+    add_apples
+    dead?
   end
 
   def add_apples
+    if (@age > 2 && @age < 13) && !dead?
+      (5 * @age).times { @apples.push(Apple.new('green', rand(1..4))) }
+    end
+    @apples.count
   end
 
   def any_apples?
+    @apples.count > 0
   end
 
   def pick_an_apple!
     raise NoApplesError, "This tree has no apples" unless self.any_apples?
+    @apples.pop
   end
 
   def dead?
+    if @age == 13
+      @alive = false
+      true
+    end
   end
 end
 
 class Fruit
+  attr_reader :has_seeds
+
   def initialize
-    has_seeds = true
+    @has_seeds = true
   end
 end
 
-class Apple <
-  attr_reader #what should go here 
+class Apple < Fruit
+  attr_reader :color, :diameter
 
   def initialize(color, diameter)
+    super()
+    @color = color
+    @diameter = diameter
   end
 end
 
@@ -61,7 +84,7 @@ def tree_data
       diameter_sum += apple.diameter
     end
 
-    avg_diameter = # It's up to you to calculate the average diameter for this harvest.
+    avg_diameter = diameter_sum/basket.count
 
     puts "Year #{tree.age} Report"
     puts "Tree height: #{tree.height} feet"
@@ -76,4 +99,4 @@ def tree_data
 end
 
 # Uncomment this line to run the script, but BE SURE to comment it before you try to run your tests!
-# tree_data
+#tree_data

spec/tree_spec.rb

@@ -5,10 +5,65 @@
   it 'should be a Class' do
     expect(described_class.is_a? Class).to eq true
   end
+
+  let(:t) { Tree.new }
+
+    it 'is initaialized with expected values for attributes' do
+      expect(t.age).to eq 0
+      expect(t.height).to eq 0
+      expect(t.apples).to eq []
+      expect(t.alive).to be(true)
+    end
+
+    it 'ages' do
+      t.age!
+      expect(t.age).to eq 1
+      expect(t.apples).to eq []
+    end
+
+    it 'does not produce apples for first 2 years' do
+      2.times { t.age! }
+      expect(t.apples).to eq []
+    end
+
+    it 'produces 5 apples when aged 3 years' do
+      3.times { t.age! }
+      expect(t.apples.count).to eq 15
+    end
+
+    it 'can be picked for apples' do
+      3.times { t.age! }
+      t.pick_an_apple!
+      expect(t.apples).not_to be_empty
+    end
+
+    it 'dies when it ages beyond 12 years' do
+      13.times { t.age! }
+      expect(t.alive).to be(false)
+    end
 end
 
 describe 'Fruit' do
+  it "should have seeds" do
+    f = Fruit.new
+    expect(f.has_seeds).to be(true)
+  end
 end
 
 describe 'Apple' do
+
+  let(:a) { Apple.new("red", 2) }
+
+  it "has super class' attributes" do
+    expect(a.has_seeds).to be(true)
+  end
+
+  it "is red" do
+    expect(a.color).to eq ("red")
+  end
+
+  it "has a diameter" do
+    expect(a.diameter).to eq 2
+  end
+
 end