RAILS_ENV changes to test after init

I think RAILS_ENV is getting set incorrectly, but I don't know exactly
how to find out where.

At the bottom of Rails::Initializer.run do |config| in environment.rb,
RAILS_ENV is the correct value (staging, development, production,

Just below the initializer block, RAILS_ENV has changed to 'test'.

Any ideas?

Turns out it was happening when rpsec-rails was being loaded.
Conditional loading for the test environment solved this:

config.gem 'rspec-rails', :lib => 'spec/rails', :version => '1.1.11'
if RAILS_ENV == 'test'