Panda and Tiger Level

zoo.rb

@@ -52,7 +52,6 @@ def full?
 	end
 end
 
-
 class Food
 
 	def ==(other)
@@ -65,13 +64,27 @@ class Tacos < Food; end
 class Wildebeests < Food; end
 class Zeebras < Food; end
 class Bamboo < Food; end
+class Bacon < Food; end
 
 class Zookeeper
 	def feed(args={})
+		animal = args.fetch(:to)
 		food = args.fetch(:food)
-		panda = args.fetch(:to)
-		panda.eat(food)
+		animal.eat(food)
 	end
 
 end
 
+class Human
+        include Animal
+
+        def acceptable_food
+                [Bacon.new, Tacos.new]
+        end
+end
+
+class FoodBarge
+        def food_for(animal)
+                animal.acceptable_food
+        end
+end

zoo_spec.rb

@@ -80,3 +80,26 @@ class Salad < Food; end
 		Zookeeper.new.feed(food: :zeebras, to: lion)
 	end
 end
+
+describe Human do
+        it "should like Bacon" do
+                Human.new.likes?(Bacon.new).should eq(true)
+        end
+        it "should like Tacos" do
+                Human.new.likes?(Tacos.new).should eq(true)
+        end
+        it "should not like bamboo" do
+                Human.new.likes?(Bamboo.new).should eq(false)
+        end
+end
+
+describe FoodBarge do
+        before(:each) do
+                @barge = FoodBarge.new
+        end
+        it "should bring food to pandas" do
+                panda = Panda.new
+                panda_food = panda.acceptable_food
+                @barge.food_for(panda).should eq(panda_food)
+        end
+end