josevalim

# In your test_helper.rb
class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end

wayneeseguin

This example shows how to setup an environment running Rails 3 under 1.9.2 with a 'rails3' gem set.

∴ rvm update --head
# ((Open a new shell)) or do 'rvm reload'

# If you do not already have the ruby interpreter installed, install it:
∴ rvm install 1.9.2

# Switch to 1.9.2-head and gemset rails3, create if it doesn't exist. 
∴ rvm --create use 1.9.2@rails3

lenary

# stolen from http://github.com/cschneid/irclogger/blob/master/lib/partials.rb
#   and made a lot more robust by me
# this implementation uses erb by default. if you want to use any other template mechanism
#   then replace `erb` on line 13 and line 17 with `haml` or whatever 
module Sinatra::Partials
  def partial(template, *args)
    template_array = template.to_s.split('/')
    template = template_array[0..-2].join('/') + "/_#{template_array[-1]}"
    options = args.last.is_a?(Hash) ? args.pop : {}
    options.merge!(:layout => false)