# encoding: ascii-8bit

# Copyright 2014 Ball Aerospace & Technologies Corp.
# All Rights Reserved.
#
# This program is free software; you can modify and/or redistribute it
# under the terms of the GNU General Public License
# as published by the Free Software Foundation; version 3 with
# attribution addendums as found in the LICENSE.txt

require 'spec_helper'
require 'cosmos'
require 'cosmos/tools/cmd_tlm_server/cmd_tlm_server'
require 'cosmos/tools/cmd_tlm_server/cmd_tlm_server_config'
require 'tempfile'
load 'cosmos.rb' # Ensure COSMOS::USERPATH/lib is set

module Cosmos

  describe CmdTlmServerConfig do
    before(:all) do
      @interface_filename = File.join(Cosmos::USERPATH,'lib','cts_config_test_interface.rb')
      File.open(@interface_filename,'w') do |file|
        file.puts "require 'cosmos'"
        file.puts "require 'cosmos/interfaces/interface'"
        file.puts "module Cosmos"
        file.puts "  class CtsConfigTestInterface < Interface"
        file.puts "    def initialize(test = true)"
        file.puts "      super()"
        file.puts "    end"
        file.puts "  end"
        file.puts "end"
      end

      @protocol_filename = File.join(Cosmos::USERPATH,'lib','cts_config_test_protocol.rb')
      File.open(@protocol_filename,'w') do |file|
        file.puts "require 'cosmos'"
        file.puts "require 'cosmos/interfaces/protocols/protocol'"
        file.puts "module Cosmos"
        file.puts "  class CtsConfigTestProtocol < Protocol"
        file.puts "    def initialize(*args)" # Allow any args
        file.puts "      super()"
        file.puts "    end"
        file.puts "  end"
        file.puts "end"
      end

      @keywords = %w(TITLE PACKET_LOG_WRITER AUTO_INTERFACE_TARGETS INTERFACE_TARGET INTERFACE ROUTER)
      @interface_keywords = %w(DONT_CONNECT DONT_RECONNECT RECONNECT_DELAY DISABLE_DISCONNECT LOG_RAW  OPTION LOG DONT_LOG TARGET PROTOCOL)
    end

    after(:all) do
      File.delete @interface_filename
      File.delete @protocol_filename
    end

    describe "process_file" do
      it "complains if there is an unknown keyword" do
        tf = Tempfile.new('unittest')
        tf.puts "UNKNOWN"
        tf.close
        expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unknown keyword: UNKNOWN/)
        tf.unlink
      end

      it "complains if there are not enough parameters" do
        @keywords.each do |keyword|
          next if %w(AUTO_INTERFACE_TARGETS).include? keyword
          tf = Tempfile.new('unittest')
          tf.puts keyword
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Not enough parameters for #{keyword}./)
          tf.unlink
        end

        @interface_keywords.each do |keyword|
          next if %w(DONT_CONNECT DONT_RECONNECT DISABLE_DISCONNECT DONT_LOG LOG_RAW).include? keyword
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts keyword
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Not enough parameters for #{keyword}./)
          tf.unlink
        end
      end

      context "with TITLE" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts 'TITLE HI THERE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for TITLE./)
          tf.unlink
        end

        it "sets the title" do
          tf = Tempfile.new('unittest')
          tf.puts 'TITLE TEST'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.title).to eql "TEST"
          tf.unlink
        end
      end

      context "with PACKET_LOG_WRITER" do
        it "sets the packet log writer" do
          tf = Tempfile.new('unittest')
          tf.puts 'PACKET_LOG_WRITER MY_WRITER packet_log_writer.rb'
          tf.close
          config =CmdTlmServerConfig.new(tf.path)
          expect(config.packet_log_writer_pairs.keys).to eql ["DEFAULT","MY_WRITER"]
          tf.unlink
        end

        it "sets the packet log writer with parameters" do
          tf = Tempfile.new('unittest')
          tf.puts 'PACKET_LOG_WRITER MY_WRITER packet_log_writer.rb test_log_name false 3 1000 C:\log false'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.packet_log_writer_pairs.keys).to eql ["DEFAULT","MY_WRITER"]
          expect(config.packet_log_writer_pairs["DEFAULT"].cmd_log_writer.logging_enabled).to eq true
          expect(config.packet_log_writer_pairs["MY_WRITER"].cmd_log_writer.logging_enabled).to eq false
          tf.unlink
          config.packet_log_writer_pairs.each do |name, plwp|
            plwp.cmd_log_writer.shutdown
            plwp.tlm_log_writer.shutdown
          end
          sleep(0.2)
        end

        it "doesnt allow overriding a PACKET_LOG_WRITER associated with an interface" do
          tf = Tempfile.new('unittest')
          tf.puts 'AUTO_INTERFACE_TARGETS'
          tf.puts 'PACKET_LOG_WRITER DEFAULT packet_log_writer.rb test_log_name false 3 1000 C:\log false'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Redefining Packet Log Writer DEFAULT not allowed after it is associated with an interface/)
        end
      end

      context "with AUTO_INTERFACE_TARGETS" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts 'AUTO_INTERFACE_TARGETS BLAH'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for AUTO_INTERFACE_TARGETS./)
          tf.unlink
        end

        it "automatically processes interfaces" do
          # Stub out the CmdTlmServer
          allow(CmdTlmServer).to receive_message_chain(:instance, :subscribe_limits_events)

          tf = Tempfile.new('unittest')
          tf.puts 'AUTO_INTERFACE_TARGETS'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces.keys).to eql %w(INST_INT SYSTEM_INT)
          tf.unlink
        end

        it "allows interfaces to be previously defined by INTERFACE_TARGET" do
          # Stub out the CmdTlmServer
          allow(CmdTlmServer).to receive_message_chain(:instance, :subscribe_limits_events)

          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE_TARGET INST'
          tf.puts 'AUTO_INTERFACE_TARGETS'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces.keys).to eql %w(INST_INT SYSTEM_INT)
          tf.unlink
        end

        it "allows interfaces to be previously defined by INTERFACE" do
          # Stub out the CmdTlmServer
          allow(CmdTlmServer).to receive_message_chain(:instance, :subscribe_limits_events)

          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE INST_INT simulated_target_interface.rb sim_inst.rb'
          tf.puts '  TARGET INST'
          tf.puts 'AUTO_INTERFACE_TARGETS'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces.keys).to eql %w(INST_INT SYSTEM_INT)
          tf.unlink
        end

        it "complains about target name substitution" do
          System.class_eval('@@instance = nil')
          # Save system.txt
          system_file = File.join(Cosmos::USERPATH,'config','system','system.txt')
          FileUtils.mv system_file, Cosmos::USERPATH

          # Create another system.txt with target name substitution
          File.open(system_file,'w') do |file|
            file.puts 'DECLARE_TARGET INST'
            file.puts 'DECLARE_TARGET INST INST2'
          end

          tf = Tempfile.new('unittest')
          tf.puts 'AUTO_INTERFACE_TARGETS'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Cannot use AUTO_INTERFACE_TARGETS with target name substitutions/)
          tf.unlink

          # Restore system.txt
          FileUtils.mv File.join(Cosmos::USERPATH, 'system.txt'),
            File.join(Cosmos::USERPATH,'config','system')
          System.class_eval('@@instance = nil')
        end
      end

      context "with INTERFACE_TARGET" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE_TARGET BLAH config.txt MORE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for INTERFACE_TARGET./)
          tf.unlink
        end

        it "complains about unknown targets" do
          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE_TARGET BLAH'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unknown target: BLAH/)
          tf.unlink
        end

        it "complains about unknown target files" do
          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE_TARGET TEST'
          tf.close
          System.targets["TEST"] = Target.new("TEST")
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /TEST\/cmd_tlm_server.txt does not exist/)
          tf.unlink
        end

        it "complains if the target is already mapped to an interface" do
          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE INST_INT simulated_target_interface.rb sim_inst.rb'
          tf.puts '  TARGET INST'
          tf.puts 'INTERFACE_TARGET INST'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Target INST already mapped to interface INST_INT/)
          tf.unlink
        end

        it "processes an interface" do
          tf = Tempfile.new('unittest')
          tf.puts 'INTERFACE_TARGET INST'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces.keys).to eql %w(INST_INT)
          tf.unlink
        end
      end

      context "with DONT_CONNECT" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_CONNECT TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for DONT_CONNECT./)
          tf.unlink
        end

        it "sets the interface to not connect on startup" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_CONNECT'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].connect_on_startup).to eq false
          tf.unlink
        end
      end

      context "with DONT_RECONNECT" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_RECONNECT TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for DONT_RECONNECT./)
          tf.unlink
        end

        it "sets the interface to not auto reconnect" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_RECONNECT'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].auto_reconnect).to eq false
          tf.unlink
        end
      end

      context "with RECONNECT_DELAY" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'RECONNECT_DELAY 5.0 TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for RECONNECT_DELAY./)
          tf.unlink
        end

        it "sets the delay between reconnect tries" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'RECONNECT_DELAY 5.0'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].reconnect_delay).to eql 5.0
          tf.unlink
        end
      end

      context "with DISABLE_DISCONNECT" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DISABLE_DISCONNECT TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for DISABLE_DISCONNECT./)
          tf.unlink
        end

        it "sets the interface to not allow disconnects" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DISABLE_DISCONNECT'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].disable_disconnect).to eq true
          tf.unlink
        end
      end

      context "with LOG_RAW" do
        it "create a raw logger on the interface" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'LOG_RAW'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].raw_logger_pair).to be_a RawLoggerPair
          expect(config.interfaces['CTSSPEC_INT'].raw_logger_pair.read_logger).to be_a RawLogger
          expect(config.interfaces['CTSSPEC_INT'].raw_logger_pair.write_logger).to be_a RawLogger
          tf.unlink
        end

        it "creates a customized raw logger on the interface" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts "LOG_RAW raw_logger true 1000 'C:/logs'"
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          read_logger = config.interfaces['CTSSPEC_INT'].raw_logger_pair.read_logger
          expect(read_logger.orig_name).to eq "CTSSPEC_INT"
          expect(read_logger.instance_variable_get("@logging_enabled")).to eq true
          expect(read_logger.instance_variable_get("@cycle_size")).to eq 1000
          expect(read_logger.instance_variable_get("@log_directory")).to eq "C:/logs"
          write_logger = config.interfaces['CTSSPEC_INT'].raw_logger_pair.write_logger
          expect(write_logger.orig_name).to eq "CTSSPEC_INT"
          expect(write_logger.instance_variable_get("@logging_enabled")).to eq true
          expect(write_logger.instance_variable_get("@cycle_size")).to eq 1000
          expect(write_logger.instance_variable_get("@log_directory")).to eq "C:/logs"
          tf.unlink
        end
      end

      context "with OPTION" do
        it "complains about too few parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'OPTION TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Not enough parameters for OPTION./)
          tf.unlink
        end

        it "sets the interface to listen on a specific address" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'OPTION LISTEN_ADDRESS 127.0.0.1'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].options['LISTEN_ADDRESS']).to eql(['127.0.0.1'])
          tf.unlink
        end
      end

      context "with LOG" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'LOG PacketLogWriter TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for LOG./)
          tf.unlink
        end

        it "complains about unknown log writers" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'LOG MyLogWriter'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unknown packet log writer: MYLOGWRITER/)
          tf.unlink
        end

        it "adds a packet log writer to the interface" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'LOG DEFAULT'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].packet_log_writer_pairs.length).to eql 1
          tf.unlink

          tf = Tempfile.new('unittest')
          tf.puts 'PACKET_LOG_WRITER MY_WRITER packet_log_writer.rb'
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'LOG DEFAULT'
          tf.puts 'LOG MY_WRITER'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].packet_log_writer_pairs.length).to eql 2
          tf.unlink
        end
      end

      context "with DONT_LOG" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_LOG TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for DONT_LOG./)
          tf.unlink
        end

        it "removes loggers from the interface" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'DONT_LOG'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].packet_log_writer_pairs.length).to eql 0
          tf.unlink
        end
      end

      context "with TARGET" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'TARGET TEST TRUE'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for TARGET./)
          tf.unlink
        end

        it "complains about unknown targets" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE TEST_INT cts_config_test_interface.rb"
          tf.puts 'TARGET BLAH'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unknown target BLAH mapped to interface TEST_INT/)
          tf.unlink
        end

        it "complains if the target is already mapped" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE TEST_INT cts_config_test_interface.rb"
          tf.puts 'TARGET TEST'
          tf.puts 'TARGET TEST'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Target TEST already mapped to interface TEST_INT/)
          tf.unlink
        end
      end

      context "with PROTOCOL" do
        it "requires two parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Not enough parameters for PROTOCOL/)
          tf.unlink
        end

        it "requires a READ, WRITE, or READ_WRITE descriptor" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL BLAH cts_config_test_protocol.rb'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Invalid protocol type: BLAH/)
          tf.unlink
        end

        it "requires a protocol filename or class" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Not enough parameters for PROTOCOL/)
          tf.unlink
        end

        it "complains about filenames or classes which aren't found" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ this_is_not_a_file.rb'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unable to require this_is_not_a_file.rb/)
          tf.unlink
        end

        it "instantiates via the file name" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ cts_config_test_protocol.rb'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].read_protocols[0].class).to eq CtsConfigTestProtocol
          tf.unlink
        end

        it "instantiates via the class name" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ CtsConfigTestProtocol'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.interfaces['CTSSPEC_INT'].read_protocols[0].class).to eq CtsConfigTestProtocol
          tf.unlink
        end

        it "appends to the list of READ protocols" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ OverrideProtocol'
          tf.puts 'PROTOCOL READ CtsConfigTestProtocol'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          read_protocols = config.interfaces['CTSSPEC_INT'].read_protocols
          expect(read_protocols[0].class).to eq OverrideProtocol
          expect(read_protocols[1].class).to eq CtsConfigTestProtocol
          expect(config.interfaces['CTSSPEC_INT'].write_protocols).to be_empty
          tf.unlink
        end

        it "prepends to the list of WRITE protocols" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL WRITE OverrideProtocol'
          tf.puts 'PROTOCOL WRITE CtsConfigTestProtocol'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          write_protocols = config.interfaces['CTSSPEC_INT'].write_protocols
          expect(write_protocols[0].class).to eq CtsConfigTestProtocol
          expect(write_protocols[1].class).to eq OverrideProtocol
          expect(config.interfaces['CTSSPEC_INT'].read_protocols).to be_empty
          tf.unlink
        end

        it "adds to both with READ_WRITE" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ_WRITE OverrideProtocol'
          tf.puts 'PROTOCOL READ_WRITE CtsConfigTestProtocol'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          read_protocols = config.interfaces['CTSSPEC_INT'].read_protocols
          write_protocols = config.interfaces['CTSSPEC_INT'].write_protocols
          expect(read_protocols[0].class).to eq OverrideProtocol
          expect(read_protocols[1].class).to eq CtsConfigTestProtocol
          expect(write_protocols[0].class).to eq CtsConfigTestProtocol
          expect(write_protocols[1].class).to eq OverrideProtocol
          tf.unlink
        end

        it "stores initialization parameters" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'PROTOCOL READ cts_config_test_protocol.rb PARAM1 20'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          pinfo = config.interfaces['CTSSPEC_INT'].protocol_info[0]
          expect(pinfo[0]).to eq CtsConfigTestProtocol
          expect(pinfo[1]).to eq ['PARAM1', '20']
          expect(pinfo[2]).to eq :READ
          tf.unlink
        end
      end

      context "with two interfaces with the same name" do
        it "complains about duplicate interface names" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Interface 'CTSSPEC_INT' defined twice/)
          tf.unlink
        end
      end

      context "with two routers with the same name" do
        it "complains about duplicate router names" do
          tf = Tempfile.new('unittest')
          tf.puts "ROUTER MY_ROUTER1 cts_config_test_interface.rb"
          tf.puts "ROUTER MY_ROUTER1 cts_config_test_interface.rb"
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Router 'MY_ROUTER1' defined twice/)
          tf.unlink
        end
      end

      context "with ROUTER" do
        it "creates a new router" do
          tf = Tempfile.new('unittest')
          tf.puts 'ROUTER MY_ROUTER1 cts_config_test_interface.rb'
          tf.puts 'ROUTER MY_ROUTER2 cts_config_test_interface.rb false'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.routers.keys).to eql %w(MY_ROUTER1 MY_ROUTER2)
          tf.unlink
        end

        it "supports protocols" do
          tf = Tempfile.new('unittest')
          tf.puts 'ROUTER MY_ROUTER1 cts_config_test_interface.rb'
          tf.puts '  PROTOCOL READ_WRITE OverrideProtocol'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.routers.keys).to eql %w(MY_ROUTER1)
          tf.unlink
        end
      end

      context "with ROUTE" do
        it "complains about too many parameters" do
          tf = Tempfile.new('unittest')
          tf.puts 'ROUTER ROUTER cts_config_test_interface.rb'
          tf.puts 'ROUTE interface more'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Too many parameters for ROUTE./)
          tf.unlink
        end

        it "complains if a router hasn't been defined" do
          tf = Tempfile.new('unittest')
          tf.puts 'ROUTE interface more'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /No current router for ROUTE/)
          tf.unlink
        end

        it "complains if the interface is undefined" do
          tf = Tempfile.new('unittest')
          tf.puts 'ROUTER ROUTER cts_config_test_interface.rb'
          tf.puts 'ROUTE CTSSPEC_INT'
          tf.close
          expect { CmdTlmServerConfig.new(tf.path) }.to raise_error(ConfigParser::Error, /Unknown interface CTSSPEC_INT mapped to router ROUTER/)
          tf.unlink
        end

        it "creates the route" do
          tf = Tempfile.new('unittest')
          tf.puts "INTERFACE CTSSPEC_INT cts_config_test_interface.rb"
          tf.puts 'ROUTER ROUTER cts_config_test_interface.rb'
          tf.puts 'ROUTE CTSSPEC_INT'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.routers['ROUTER'].interfaces[0]).to be_a CtsConfigTestInterface
          tf.unlink
        end
      end

      context "with BACKGROUND_TASK" do
        it "creates a background task" do
          background_task_no_args_file = File.join(Cosmos::USERPATH,'lib','cts_config_test_background_task_no_args.rb')
          File.open(background_task_no_args_file,'w') do |file|
            file.puts "require 'cosmos'"
            file.puts "require 'cosmos/tools/cmd_tlm_server/background_task'"
            file.puts "module Cosmos"
            file.puts "  class CtsConfigTestBackgroundTaskNoArgs < BackgroundTask"
            file.puts "    def initialize()"
            file.puts "      super()"
            file.puts "    end"
            file.puts "  end"
            file.puts "end"
          end

          background_task_args_file = File.join(Cosmos::USERPATH,'lib','cts_config_test_background_task_args.rb')
          File.open(background_task_args_file,'w') do |file|
            file.puts "require 'cosmos'"
            file.puts "require 'cosmos/tools/cmd_tlm_server/background_task'"
            file.puts "module Cosmos"
            file.puts "  class CtsConfigTestBackgroundTaskArgs < BackgroundTask"
            file.puts "    def initialize(param1, param2, param3)"
            file.puts "      super()"
            file.puts "    end"
            file.puts "  end"
            file.puts "end"
          end

          tf = Tempfile.new('unittest')
          tf.puts 'BACKGROUND_TASK cts_config_test_background_task_no_args.rb'
          tf.puts 'BACKGROUND_TASK cts_config_test_background_task_args.rb 1 2 3'
          tf.puts '  STOPPED'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.background_tasks.length).to eql 2
          expect(config.background_tasks[0]).to be_a CtsConfigTestBackgroundTaskNoArgs
          expect(config.background_tasks[0].stopped).to be false
          expect(config.background_tasks[1]).to be_a CtsConfigTestBackgroundTaskArgs
          expect(config.background_tasks[1].stopped).to be true
          tf.unlink

          File.delete background_task_no_args_file
          File.delete background_task_args_file
        end
      end

      context "with COLLECT_METADATA" do
        it "indicates metadata should be collected" do
          tf = Tempfile.new('unittest')
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.metadata).to be false
          tf.unlink

          tf = Tempfile.new('unittest')
          tf.puts 'COLLECT_METADATA'
          tf.close
          config = CmdTlmServerConfig.new(tf.path)
          expect(config.metadata).to be true
          tf.unlink
        end
      end

    end
  end
end