How to include ActiveRecord in gem tests?

Question

I'm trying to use Model < ActiveRecord::Base in one of my gem tests with shoulda and I'm getting the following error

./test/model.rb:1:in `require': no such file to load -- active_record (LoadError)

Without this call, I'm getting this error

./test/model.rb:1: uninitialized constant ActiveRecord (NameError)

Help! I need a barebones AR model for my tests :)

my_gem/test/model.rb

require 'active_record' # <= this fails class Model < ActiveRecord::Base # <= I need a barebones AR model here acts_as_flaggable end

my_gem/test/test_acts_as_flaggable.rb

require 'helper' require 'model' class TestActsAsFlaggable < Test::Unit::TestCase context "a model" do setup do @model = Model.new end should "be able to set flag" do @model.flag[:foo] = "bar" assert_equal "bar", @model.flag[:foo] end should "get default value for unset flags" do @model = User.new assert_equal false, @model.flag[:some_unset_flag] end end end

Disclaimer: I'm very new to testing. This is my first gem and I wanted to make sure I was doing things the "right" way :)

I trust you have the activerecord gem installed and you can require it from irb? — Devin M
– Devin M, Commented May 19, 2011 at 5:12

MrRuru · Accepted Answer · 2011-06-01 15:30:57Z

If you want to use it outside of a Rails application, you need to also require 'rubygems'

I the goal of your gem is to be used inside a Rails app, and if it is your first gem, I would recommend using enginex to gain some time. Granted, it's originally supposed to help making engines, but the included testing saves a lot of hassle...

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