require 'pio'

describe Pio::LLDP do
  Then { Pio::LLDP == Pio::Lldp }
end

describe Pio::Lldp do
  describe '.new' do
    context 'with :dpid and :port_number' do
      Given(:lldp) do
        Pio::Lldp.new(dpid: 0x192fa7b28d, port_number: 1)
      end

      describe '#to_binary' do
        When(:result) { lldp.to_binary }

        Then do
          result ==
            [
              # Destination MAC
              0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e,
              # Source MAC
              0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
              # Ethertype
              0x88, 0xcc,
              # Chassis ID TLV
              0x02, 0x09, 0x07, 0x00, 0x00, 0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
              # Port ID TLV
              0x04, 0x05, 0x07, 0x00, 0x00, 0x00, 0x01,
              # Time to live TLV
              0x06, 0x02, 0x00, 0x78,
              # End of LLDPDU TLV
              0x00, 0x00,
              # Padding
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00
            ].pack('C*')
        end
        And { result.size == 64 }
      end
    end

    context 'with :dpid, :port_number and :source_mac' do
      Given(:lldp) do
        Pio::Lldp.new(
          dpid: 0x192fa7b28d,
          port_number: 1,
          source_mac: '06:05:04:03:02:01'
        )
      end

      describe '#to_binary' do
        When(:result) { lldp.to_binary }

        Then do
          result ==
            [
              # Destination MAC
              0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e,
              # Source MAC
              0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
              # Ethertype
              0x88, 0xcc,
              # Chassis ID TLV
              0x02, 0x09, 0x07, 0x00, 0x00, 0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
              # Port ID TLV
              0x04, 0x05, 0x07, 0x00, 0x00, 0x00, 0x01,
              # Time to live TLV
              0x06, 0x02, 0x00, 0x78,
              # End of LLDPDU TLV
              0x00, 0x00,
              # Padding
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00
            ].pack('C*')
        end
        And { result.size == 64 }
      end
    end

    context 'with :dpid, :port_number, :source_mac and :destination_mac' do
      Given(:lldp) do
        Pio::Lldp.new(
          dpid: 0x192fa7b28d,
          port_number: 1,
          source_mac: '06:05:04:03:02:01',
          destination_mac: '01:02:03:04:05:06'
        )
      end

      describe '#to_binary' do
        When(:result) { lldp.to_binary }

        Then do
          result ==
            [
              # Destination MAC
              0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
              # Source MAC
              0x06, 0x05, 0x04, 0x03, 0x02, 0x01,
              # Ethertype
              0x88, 0xcc,
              # Chassis ID TLV
              0x02, 0x09, 0x07, 0x00, 0x00, 0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
              # Port ID TLV
              0x04, 0x05, 0x07, 0x00, 0x00, 0x00, 0x01,
              # Time to live TLV
              0x06, 0x02, 0x00, 0x78,
              # End of LLDPDU TLV
              0x00, 0x00,
              # Padding
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
              0x00, 0x00, 0x00, 0x00, 0x00, 0x00
            ].pack('C*')
        end
        And { result.size == 64 }
      end
    end
  end

  context '.read' do
    context 'with a minimum LLDP frame' do
      Given(:lldp_dump) do
        [
          # Destination MAC
          0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e,
          # Source MAC
          0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
          # Ethertype
          0x88, 0xcc,
          # Chassis ID TLV
          0x02, 0x07, 0x04, 0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
          # Port ID TLV
          0x04, 0x0d, 0x01, 0x55, 0x70, 0x6c, 0x69, 0x6e, 0x6b, 0x20,
          0x74, 0x6f, 0x20, 0x53, 0x31,
          # Time to live TLV
          0x06, 0x02, 0x00, 0x78,
          # End of LLDPDU TLV
          0x00, 0x00
        ].pack('C*')
      end

      When(:lldp) { Pio::Lldp.read(lldp_dump) }

      Then { lldp.destination_mac.to_s == '01:80:c2:00:00:0e' }
      Then { lldp.source_mac.to_s == '00:19:2f:a7:b2:8d' }
      Then { lldp.ether_type == 0x88cc }
      Then { lldp.dpid == 0x192fa7b28d }
      Then { lldp.dpid.class == Fixnum }
      Then { lldp.chassis_id == 0x192fa7b28d }
      Then { lldp.port_id == 'Uplink to S1' }
      Then { lldp.port_number == 'Uplink to S1' }
      Then { lldp.port_number.class == String }
      Then { lldp.ttl == 120 }
      Then { lldp.port_description == nil }
      Then { lldp.system_name == nil }
      Then { lldp.system_description == nil }
      Then { lldp.system_capabilities == nil }
      Then { lldp.management_address == nil }
    end

    context 'with a detailed LLDP frame' do
      Given(:lldp_dump) do
        [
          # Destination MAC
          0x01, 0x80, 0xc2, 0x00, 0x00, 0x0e,
          # Source MAC
          0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
          # Ethertype
          0x88, 0xcc,
          # Chassis ID TLV
          0x02, 0x07, 0x04, 0x00, 0x19, 0x2f, 0xa7, 0xb2, 0x8d,
          # Port ID TLV
          0x04, 0x0d, 0x01, 0x55, 0x70, 0x6c, 0x69, 0x6e, 0x6b, 0x20,
          0x74, 0x6f, 0x20, 0x53, 0x31,
          # Time to live TLV
          0x06, 0x02, 0x00, 0x78,
          # Port Description
          0x08, 0x17, 0x53, 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30,
          0x30, 0x2d, 0x34, 0x38, 0x2d, 0x50, 0x6f, 0x72, 0x74, 0x20,
          0x31, 0x30, 0x30, 0x31, 0x00,
          # System Name
          0x0a, 0x0d, 0x53, 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30,
          0x30, 0x2d, 0x34, 0x38, 0x00,
          # System Description
          0x0c, 0x4c, 0x53, 0x75, 0x6d, 0x6d, 0x69, 0x74, 0x33, 0x30,
          0x30, 0x2d, 0x34, 0x38, 0x20, 0x2d, 0x20, 0x56, 0x65, 0x72,
          0x73, 0x69, 0x6f, 0x6e, 0x20, 0x37, 0x2e, 0x34, 0x65, 0x2e,
          0x31, 0x20, 0x28, 0x42, 0x75, 0x69, 0x6c, 0x64, 0x20, 0x35,
          0x29, 0x20, 0x62, 0x79, 0x20, 0x52, 0x65, 0x6c, 0x65, 0x61,
          0x73, 0x65, 0x5f, 0x4d, 0x61, 0x73, 0x74, 0x65, 0x72, 0x20,
          0x30, 0x35, 0x2f, 0x32, 0x37, 0x2f, 0x30, 0x35, 0x20, 0x30,
          0x34, 0x3a, 0x35, 0x33, 0x3a, 0x31, 0x31, 0x00,
          # System Capabilities
          0x0e, 0x04, 0x00, 0x14, 0x00, 0x14,
          # Management Address
          0x10, 0x0e, 0x07, 0x06, 0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0,
          0x02, 0x00, 0x00, 0x03, 0xe9, 0x00,
          # Organizationally Specific
          0xfe, 0x07, 0x00, 0x12, 0x0f, 0x02, 0x07, 0x01, 0x00,
          # End of LLDPDU TLV
          0x00, 0x00
        ].pack('C*')
      end

      When(:lldp) { Pio::Lldp.read(lldp_dump) }

      Then { lldp.destination_mac.to_s == '01:80:c2:00:00:0e' }
      Then { lldp.source_mac.to_s == '00:19:2f:a7:b2:8d' }
      Then { lldp.ether_type == 0x88cc }
      Then { lldp.dpid == 0x192fa7b28d }
      Then { lldp.chassis_id == 0x192fa7b28d }
      Then { lldp.port_id == 'Uplink to S1' }
      Then { lldp.port_number == 'Uplink to S1' }
      Then { lldp.port_number.class == String }
      Then { lldp.ttl == 120 }
      Then { lldp.port_description == 'Summit300-48-Port 1001' }
      Then { lldp.system_name == 'Summit300-48' }
      Then do
        lldp.system_description ==
          'Summit300-48 - Version 7.4e.1 (Build 5) ' \
          'by Release_Master 05/27/05 04:53:11'
      end
      Then { lldp.system_capabilities.system_capabilities == 20 }
      Then { lldp.system_capabilities.enabled_capabilities == 20 }
      Then do
        lldp.management_address ==
          [0x00, 0x01, 0x30, 0xf9, 0xad, 0xa0].pack('C*')
      end
      Then { lldp.organizationally_specific.oui == 4623 }
      Then { lldp.organizationally_specific.subtype == 2 }
      Then { lldp.organizationally_specific.information == "\a\x01" }
    end

    context 'with an invalid LLDP frame' do
      When(:result) { Pio::Lldp.read('') }

      Then { result == Failure(Pio::ParseError, 'End of file reached') }
    end
  end
end