require 'spec_helper'

module DRbTestHelper

  def new_drb_rpc_object
    Object.new.tap do |obj|
      @component_manager.extend_object_with(obj, :rpc)
    end
  end

  def add_rpc_methods(code)
    @component_manager.load_code "methods_for(:rpc) do; #{code}; end"
  end

end

describe "Invoking an interface method via DRb" do
  include DRbTestHelper

  it "should raise an exception if the method is not found" do
    the_following_code do
      new_drb_rpc_object.this_method_doesnt_exist
    end.should raise_error NoMethodError
  end

  before(:all) { require 'drb' }

  before :each do
    @component_manager = Adhearsion::Components::ComponentManager.new("/path/doesnt/matter")
    @door = DRb.start_service "druby://127.0.0.1:#{37832 + rand(1500)}", new_drb_rpc_object
  end

  after :each do
    @door.stop_service
    @door.thread.kill
  end

  it "should return normal Ruby data structures properly over DRb" do
    add_rpc_methods <<-RUBY
      def bar
        [3,2,1]
      end
    RUBY
    client = DRbObject.new nil, DRb.uri
    client.bar.should == [3, 2, 1]
  end

  it "should raise an exception for a non-existent interface" do
    client = DRbObject.new nil, DRb.uri
    the_following_code do
      client.interface.bad_interface.should be [3, 2, 1]
    end.should raise_error NoMethodError
  end

  it "should raise an exception for a non-existent method" do
    client = DRbObject.new nil, DRb.uri
    the_following_code do
      client.interface.interface.foobar.equal [3, 2, 1]
    end.should raise_error NoMethodError
  end

  after do
    DRb.stop_service
  end
end