Implement Gherkins!

features/animal.feature

@@ -1 +1,16 @@
-#Create your feature here
+Feature: Animal
+  As a hotel attendant
+  I need to have information about animals
+
+  Scenario Outline: Animals
+    Given a <type> that is <age>, named "<name>"
+    Then the animal is <old>
+    And the animal should have a name, age, and type
+
+    Examples:
+      | name   | type    | age | old     |
+      | King   | dog     | 5   | old     |
+      | Prince | hamster | 2   | not old |
+      | Vinnie | rabbit  | 3   | not old |
+      | Fluffy | cat     | 4   | old     |
+

features/step_definitions/animal_steps.rb

@@ -1 +1,18 @@
-#Delete this comment, here is where you should write your step defs
+Given /^an? (\w+) that is (\w+), named "(\w+)"$/ do |type, age, name|
+  @name = name
+  @type = type
+  @age = age.to_i
+  @animal = Animal.new(name, type, @age)
+end
+
+Then /^the animal is (old|not old)$/ do |old_label|
+  is_old = old_label == 'old'
+  expect(@animal.old?).to eq is_old
+end
+
+Then /^the animal should have a name, age, and type$/ do
+  expect(@animal.name).to eq @name
+  expect(@animal.type).to eq @type
+  expect(@animal.age).to eq @age
+end
+

features/step_definitions/greeter_steps.rb

@@ -1,4 +1,4 @@
-Given(/^a animal$/) do
+Given(/^an? animal$/) do
   @animal = Animal.new('Lucy', 'cat', 4)
 end