test harness for faking a rails app in tests.

01_test_migration.rb

class TestMigration < ActiveRecord::Migration
  def self.up
    create_table :test_models do |t|
      t.integer :created_at
    end
  end
end

rails_faker.rb

require 'active_record'

ActiveRecord::Base.establish_connection({
  adapter: "sqlite3",
  database: ":memory:"
})

ActiveRecord::Migrator.up('.')

class TestModel < ActiveRecord::Base;
  include Wallpaper
end