#
# Copyright (C) 2008-2013 NEC Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#


require File.join(File.dirname(__FILE__), '..', 'spec_helper')
require 'trema'


shared_examples_for 'echo reply message' do
  class EchoReplyController < Controller; end

  it "should be logged to the switch's log", :sudo => true do
    network do
      vswitch('echo') { datapath_id 0xabc }
    end.run(EchoReplyController) do
      controller('EchoReplyController').send_message(0xabc, subject)
      sleep 2 # FIXME: wait to send_message
      expect(IO.read(File.join(Trema.log, 'openflowd.echo.log'))).to include('OFPT_ECHO_REPLY')
    end
  end
end


module Trema
  describe EchoRequest, '.new' do
    it_should_behave_like 'any Openflow message with default transaction ID'
    it_should_behave_like 'echo reply message'
    its(:user_data) { should be_nil }
  end


  describe EchoRequest, '.new(nil)' do
    subject { EchoRequest.new(nil) }
    it_should_behave_like 'any Openflow message with default transaction ID'
    it_should_behave_like 'echo reply message'
    its(:user_data) { should be_nil }
  end


  describe EchoRequest, '.new(transaction_id)' do
    subject { EchoRequest.new(transaction_id) }
    it_should_behave_like 'any Openflow message with transaction ID'

    context 'when sent to a switch' do
      let(:transaction_id) { 123 }
      it_should_behave_like 'echo reply message'
    end
  end


  describe EchoRequest, '.new(:transaction_id => value)' do
    subject { EchoRequest.new(:transaction_id => transaction_id) }
    it_should_behave_like 'any Openflow message with transaction ID'

    context 'when sent to a switch' do
      let(:transaction_id) { 123 }
      it_should_behave_like 'echo reply message'
    end
  end


  describe EchoRequest, '.new(:xid => value)' do
    subject { EchoRequest.new(:xid => xid) }
    it_should_behave_like 'any Openflow message with xid'

    context 'when sent to a switch' do
      let(:xid) { 123 }
      it_should_behave_like 'echo reply message'
    end
  end


  describe EchoRequest, '.new(:user_data => value)' do
    subject { EchoRequest.new(:user_data => user_data) }
    it_should_behave_like 'any Openflow message with user_data'

    context 'when sent to a switch' do
      let(:user_data) { 'USER DATA' }
      it_should_behave_like 'echo reply message'
    end
  end


  describe EchoRequest, '.new(:transaction_id => value, :user_data => value)' do
    subject { EchoRequest.new(:transaction_id => transaction_id, :user_data => user_data) }

    context 'transaction_id: 123, user_data: "USER DATA"', :nosudo => true do
      let(:transaction_id) { 123 }
      let(:user_data) { 'USER DATA' }

      its(:transaction_id) { should == 123 }
      its(:xid) { should == 123 }
      its(:user_data) { should == 'USER DATA' }
    end

    context 'when sent to a switch' do
      let(:transaction_id) { 123 }
      let(:user_data) { 'USER DATA' }
      it_should_behave_like 'echo reply message'
    end
  end


  describe EchoRequest, '.new("INVALID OPTION")' do
    it { expect { EchoRequest.new 'INVALID OPTION' }.to raise_error(TypeError) }
  end
end


### Local variables:
### mode: Ruby
### coding: utf-8-unix
### indent-tabs-mode: nil
### End: