require 'rails'
module EnvHelpers
private
def with_rails_env(env)
Rails.instance_variable_set :@_env, nil
switch_env 'RAILS_ENV', env do
switch_env 'RACK_ENV', nil do
yield
end
def switch_env(key, value)
old, ENV[key] = ENV[key], value
ensure
ENV[key] = old