set up test stuff

Gemfile

@@ -2,3 +2,9 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in active_record-observers.gemspec
 gemspec
+
+if ENV['RAILS']
+  gem 'rails', path: ENV['RAILS']
+else
+  gem 'rails', git: 'git://github.com/rails/rails'
+end

Rakefile

@@ -1,2 +1,12 @@
 #!/usr/bin/env rake
 require "bundler/gem_tasks"
+
+require 'rake/testtask'
+
+Rake::TestTask.new do |t|
+  t.libs = ["test"]
+  t.pattern = "test/**/*_test.rb"
+  t.ruby_opts = ['-w']
+end
+
+task :default => :test

active_record-observers.gemspec

@@ -14,4 +14,8 @@ Gem::Specification.new do |gem|
   gem.name          = "active_record-observers"
   gem.require_paths = ["lib"]
   gem.version       = ActiveRecord::Observers::VERSION
+
+  gem.add_development_dependency 'minitest',     '>= 3'
+  gem.add_development_dependency 'activerecord', '~> 4.0.0.beta'
+  gem.add_development_dependency 'sqlite3',      '~> 1.3'
 end

test/helper.rb

@@ -0,0 +1,38 @@
+require 'bundler/setup'
+require 'active_record-observers'
+require 'minitest/spec'
+require 'minitest/autorun'
+require 'active_record'
+
+ActiveRecord::Base.establish_connection(adapter: 'sqlite3', database: ':memory:')
+
+ActiveRecord::Schema.verbose = false
+ActiveRecord::Schema.define do
+  create_table :posts do |t|
+    t.string :title
+    t.string :category
+  end
+
+  create_table :comments do |t|
+    t.string :title
+    t.references :post
+  end
+end
+
+class Post < ActiveRecord::Base
+  attr_accessible :id, :title, :category
+  has_many :comments
+end
+
+class Comment < ActiveRecord::Base
+  def self.lol
+    "lol"
+  end
+end
+
+require 'active_support/testing/deprecation'
+ActiveSupport::Deprecation.debug = true
+
+class MiniTest::Spec
+  include ActiveSupport::Testing::Deprecation
+end