Example of problem with rspec 2 + rails 3.1 + ruby 1.9.2 + factory_girl

Gemfile

gem 'rails', '3.1.0.rc4'

group :development, :test do
  gem 'rspec-rails', '~> 2.6.1'
end

group :test do
  gem 'factory_girl_rails'
  gem 'rspec'
end

Gemfile.lock

    factory_girl (2.0.1)
    factory_girl_rails (1.1.0)
      factory_girl (~> 2.0.0)
      railties (>= 3.0.0)
...
    rspec (2.6.0)
      rspec-core (~> 2.6.0)
      rspec-expectations (~> 2.6.0)
      rspec-mocks (~> 2.6.0)
    rspec-core (2.6.4)
    rspec-expectations (2.6.0)
      diff-lcs (~> 1.1.2)
    rspec-mocks (2.6.0)
    rspec-rails (2.6.1)
      actionpack (~> 3.0)
      activesupport (~> 3.0)
      railties (~> 3.0)
      rspec (~> 2.6.0)

other_model.rb

class OtherModel < ActiveRecord::Base
  after_create :some_slow_method,     :on => :create
  
  private
  
  def some_slow_method
    # do something that takes a while
  end
end

other_model_spec.rb

require 'spec_helper'

describe OtherModel do
  before(:each) do
    @other_model = Factory.create :other_model
  end
  
  it "should work right" do
    @other_model.true_thing.should be_true
  end
end

shell output.txt

stephan$ ruby -v ; rails -v ; rspec -v
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-darwin10.7.0]
Rails 3.1.0.rc4
2.6.4

stephan$ rspec spec/models/some_model_spec.rb spec/models/other_model_spec.rb
.F

Failures:

  1) Comment 
     Failure/Error: @other_model  = Factory(:other_model)
     NameError:
       undefined local variable or method `some_slow_method' for #<OtherModel:0x00000106ff72e0>
     # ./spec/models/comment_spec.rb:5:in `block (2 levels) in <top (required)>'

Finished in xx.xx seconds
2 examples, 1 failure

stephan$ rspec spec/models/other_model_spec.rb spec/models/some_model_spec.rb
..

Finished in xx.xx seconds
2 examples, 0 failures

some_model_spec.rb

require 'spec_helper'

describe SomeModel do
  before(:each) do
    OtherModel.any_instance.stub(:some_slow_method)

    @some_model = Factory.create :some_model
  end
  
  it "should handle some_model normally" do
    @some_model.true_thing.should be_true
  end
end

LOTS of detail has been omitted here. I've experimented with lots of different settings in my gemfile, including working straight from master. The terminal output is faked, based on my real output, to illustrate the issue.

seems like it may be related to rspec/rspec-mocks#54

also tried unstubbing manually in an after(:all) or after(:each) block, wonder if it's related to this as well: rspec/rspec-mocks#68