git bisect script for Rails issue 7950

bisecttest.sh

date=`git log -n1 --pretty=format:%ai`

cd ../activerecord-deprecated_finders
git checkout `git rev-list -n1 --before="$date" master`
cd ../rails

unset AR_DEPRECATED_FINDERS
grep active_record_deprecated_finders Gemfile && export AR_DEPRECATED_FINDERS=../activerecord-deprecated_finders

export JOURNEY=../journey
cd ../journey
git checkout `git rev-list -n1 --before="$date" master`
cd ../rails

bundle check || bundle install || bundle update
ruby -Iactiverecord/test activerecord/test/cases/temp_test.rb

temp_test.rb

require 'cases/helper'
require 'models/company'

class TempTest < ActiveRecord::TestCase
  def test_included_in_collection_for_new_records
    client = Client.create(:name => 'Persisted')
    assert_nil client.client_of

    # Note the test passes when the bug is present and fails when it is fixed
    # git bisect is easier to use this way round
    assert Firm.new.clients_of_firm.include?(client)
  end
end

usage.sh

# From the root directory of the Rails repo

cd ..
git clone git://github.com/rails/journey.git
git clone git://github.com/rails/activerecord-deprecated_finders.git
cd rails

git checkout `git merge-base origin/master origin/3-2-stable`
git bisect start HEAD origin/master
git bisect run ./bisecttest.sh