The latest “stable” version of Integrity (v22) doesn’t play well with Rails 3 (or any other application using bundler 1.0). Basically the Integrity’s Gemfile is used in place of the application’s Gemfile when running the tests.
With a Rails 3 application you are likely to get:
no such file to load -- rails/all

A patched version of integrity v22 for bundler 1.0 is available on http://github.com/pcreux/integrity/tree/v22-bundler-1.0.0.rc.
You also need to force your Rails application to use its Gemfile. To do so, update the file /config/boot.rb with the following:
require 'rubygems'
GEMFILE_PATH = File.expand_path('../../Gemfile', __FILE__)
if File.exist?(GEMFILE_PATH)
ENV['BUNDLE_GEMFILE'] = GEMFILE_PATH
require 'bundler'
Bundler.setup
end
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That should make the trick!

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Get Integrity to play well with Rails 3 and Bundler 1.0
The latest “stable” version of Integrity (v22) doesn’t play well with Rails 3 (or any other application using bundler 1.0). Basically the Integrity’s Gemfile is used in place of the application’s Gemfile when running the tests.
With a Rails 3 application you are likely to get:
A patched version of integrity v22 for bundler 1.0 is available on http://github.com/pcreux/integrity/tree/v22-bundler-1.0.0.rc.
You also need to force your Rails application to use its Gemfile. To do so, update the file
/config/boot.rbwith the following:require'rubygems'# Set up gems listed in the Gemfile.GEMFILE_PATH=File.expand_path('../../Gemfile',__FILE__)ifFile.exist?(GEMFILE_PATH)# Force the rails 3 application to use its GemfileENV['BUNDLE_GEMFILE'] =GEMFILE_PATHrequire'bundler'Bundler.setupendThat should make the trick!
