```ruby
require 'config/boot'

RSpec.configure do |config|
  config.include Rack::Test::Methods

  def app
    Acme::Application
  end
end
```

Set "test" environment in spec helper
user
```ruby
ENV.store('RACK_ENV', 'test')

require 'config/boot'

RSpec.configure do |config|
  config.include Rack::Test::Methods

  def app
    Acme::Application
  end
end
```
assistant