It's time to put your knowledge of Ruby and Rspec to the test and build an application strictly using TDD!
You want to write the least amount of code possible to make the tests pass.
- Animal
Each animal should have a/an:
property called name
property called age
property called sleeping, which should have a default value of true
instance method called wake_up which changes sleeping to false
instance method called sleep which changes sleeping to true
instance method called feed which returns "NOM NOM NOM" if the animal is not sleeping
2. Dog
should inherit from Animal
has a class variable called favorite_treats which is an array of treats
has an instance variable called favorite treat which is a random item in the favorite_treats array
has an instance method called woof which returns "WOOF" if sleeping is not false
has a class method which adds to the favorite_treats array
has a class method which gets the favorite_treats array
3. Cat
should inherit from Animal
has an instance method called meow which returns "MEOW" if sleeping is not false
##Getting Started
initialize an rspec application
create the _spec.rb files necessary and include require "spec_helper" in each one
start by writing tests! Remember, red -> green -> refactor
see your tests fail and write the code necessary to make them pass
What kind of tests should I write?
You have a tremendous amount of flexibility when writing these tests, but think carefully about what they should look like. Before you even start writing tests, think about what data you are going to need for your tests and how you are going to create sample data for your tests.
Next, take a look at the documentation for Rspec matchers. You should use truthiness matchers for booleans and object type matchers for instances of classes.
Bonus
Combine the wake_up and sleep instance methods into one method that toggles the sleeping state. Create a class method called show_all_animals which returns a new array of hashes that contain the following information the name of the animal the age of the animal the class of the animal (Animal, Dog or Cat)