file.rb

require "rubygems"
require "spec/autorun"

Spec::Runner.configure do |config|
  config.before(:all) { puts "before all" }
end

describe "parent describe" do
  
  describe "child describe 1" do
    it "one" do
      puts "one"
    end

    it "two" do
      puts "two"
    end
  end
  
  describe "child describe 2" do
    it "third" do
      puts "third"
    end
  end
  
end

## output ##

# 
# before all
# one
# .two
# .before all
# third
# .
# 
# Finished in 0.003012 seconds
# 
# 3 examples, 0 failures