This is an example of Behaviour Driven Development...

animal_spec.rb

# Here, I define my class...
class Animal
  # nothing here yet
end

# and write a specification for how it should behave
# include all ruby libraries
require "rubygems"
# include rspec (ruby speccing gem)
require "rspec"

# here we describe the Animal class and how it should behave using plain english
describe Animal do
  
  # we use sentences that start with "should" or "should not" so we are definite about what we expect from the code
  it "should have an attribute called name" do
    # set @animal to be a new Animal object
    @animal = Animal.new
    
    @animal.methods.should include("name")
  end
  
end