spec_helper for Padrino that adds support for assigns(:model_name) in controller specs.

spec_helper.rb

PADRINO_ENV = 'test' unless defined?(PADRINO_ENV)
require File.expand_path(File.dirname(__FILE__) + "/../config/boot")

module Padrino  
  
  module RspecHelpers
  
    def self.registered(app)
      
      app.set :delivery_method, :test
      
      app.extend ApplicationMethods
      
      app.after do 
        app._reset_assigns_vars
        instance_variables.each do |var|
          app._set_assigns_var(var, instance_variable_get(var))
        end
      end
      
    end
    
    module ApplicationMethods
      def _reset_assigns_vars 
        @_assigns_var = {}
      end
      def _set_assigns_var(key, value = nil)
        (@_assigns_var ||= {})[key] = value
      end
      def _get_assigns_var(key)
        (@_assigns_var ||= {}).fetch("@#{key}".to_sym, key)
      end
    end

    module Helpers
      def assigns(key)
        app._get_assigns_var(key)
      end
    end
  
  end

end

RSpec.configure do |config|
  config.include Rack::Test::Methods  
  config.include Padrino::RspecHelpers::Helpers
end
  
def app
  ##
  # You can handle all padrino applications using instead:
  #   Padrino.application
  ApplicationName.tap do |app| 
    app.register Padrino::RspecHelpers
  end
end