data tree FEATURE binary LYB printer and parser
diff --git a/tests/modules/yang/iana-if-type@2014-05-08.yang b/tests/modules/yang/iana-if-type@2014-05-08.yang
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+module iana-if-type {
+  namespace "urn:ietf:params:xml:ns:yang:iana-if-type";
+  prefix ianaift;
+
+  import ietf-interfaces {
+    prefix if;
+  }
+
+  organization "IANA";
+  contact
+    "        Internet Assigned Numbers Authority
+
+     Postal: ICANN
+             4676 Admiralty Way, Suite 330
+             Marina del Rey, CA 90292
+
+     Tel:    +1 310 823 9358
+     <mailto:iana@iana.org>";
+  description
+    "This YANG module defines YANG identities for IANA-registered
+     interface types.
+
+     This YANG module is maintained by IANA and reflects the
+     'ifType definitions' registry.
+
+     The latest revision of this YANG module can be obtained from
+     the IANA web site.
+
+     Requests for new values should be made to IANA via
+     email (iana@iana.org).
+
+     Copyright (c) 2014 IETF Trust and the persons identified as
+     authors of the code.  All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject
+     to the license terms contained in, the Simplified BSD License
+     set forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (http://trustee.ietf.org/license-info).
+
+     The initial version of this YANG module is part of RFC 7224;
+     see the RFC itself for full legal notices.";
+    reference
+      "IANA 'ifType definitions' registry.
+       <http://www.iana.org/assignments/smi-numbers>";
+
+  revision 2014-05-08 {
+    description
+      "Initial revision.";
+    reference
+      "RFC 7224: IANA Interface Type YANG Module";
+  }
+
+  identity iana-interface-type {
+    base if:interface-type;
+    description
+      "This identity is used as a base for all interface types
+       defined in the 'ifType definitions' registry.";
+  }
+
+
+
+
+
+
+  identity other {
+    base iana-interface-type;
+  }
+  identity regular1822 {
+    base iana-interface-type;
+  }
+  identity hdh1822 {
+    base iana-interface-type;
+  }
+  identity ddnX25 {
+    base iana-interface-type;
+  }
+  identity rfc877x25 {
+    base iana-interface-type;
+    reference
+      "RFC 1382 - SNMP MIB Extension for the X.25 Packet Layer";
+  }
+  identity ethernetCsmacd {
+    base iana-interface-type;
+    description
+      "For all Ethernet-like interfaces, regardless of speed,
+       as per RFC 3635.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity iso88023Csmacd {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "Deprecated via RFC 3635.
+       Use ethernetCsmacd(6) instead.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity iso88024TokenBus {
+    base iana-interface-type;
+  }
+  identity iso88025TokenRing {
+    base iana-interface-type;
+  }
+  identity iso88026Man {
+    base iana-interface-type;
+  }
+  identity starLan {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "Deprecated via RFC 3635.
+       Use ethernetCsmacd(6) instead.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity proteon10Mbit {
+    base iana-interface-type;
+  }
+  identity proteon80Mbit {
+    base iana-interface-type;
+  }
+  identity hyperchannel {
+    base iana-interface-type;
+  }
+  identity fddi {
+    base iana-interface-type;
+    reference
+      "RFC 1512 - FDDI Management Information Base";
+  }
+  identity lapb {
+    base iana-interface-type;
+    reference
+      "RFC 1381 - SNMP MIB Extension for X.25 LAPB";
+  }
+  identity sdlc {
+    base iana-interface-type;
+  }
+  identity ds1 {
+    base iana-interface-type;
+    description
+      "DS1-MIB.";
+    reference
+      "RFC 4805 - Definitions of Managed Objects for the
+                  DS1, J1, E1, DS2, and E2 Interface Types";
+  }
+  identity e1 {
+    base iana-interface-type;
+    status obsolete;
+    description
+      "Obsolete; see DS1-MIB.";
+    reference
+      "RFC 4805 - Definitions of Managed Objects for the
+                  DS1, J1, E1, DS2, and E2 Interface Types";
+  }
+
+
+  identity basicISDN {
+    base iana-interface-type;
+    description
+      "No longer used.  See also RFC 2127.";
+  }
+  identity primaryISDN {
+    base iana-interface-type;
+    description
+      "No longer used.  See also RFC 2127.";
+  }
+  identity propPointToPointSerial {
+    base iana-interface-type;
+    description
+      "Proprietary serial.";
+  }
+  identity ppp {
+    base iana-interface-type;
+  }
+  identity softwareLoopback {
+    base iana-interface-type;
+  }
+  identity eon {
+    base iana-interface-type;
+    description
+      "CLNP over IP.";
+  }
+  identity ethernet3Mbit {
+    base iana-interface-type;
+  }
+  identity nsip {
+    base iana-interface-type;
+    description
+      "XNS over IP.";
+  }
+  identity slip {
+    base iana-interface-type;
+    description
+      "Generic SLIP.";
+  }
+  identity ultra {
+    base iana-interface-type;
+    description
+      "Ultra Technologies.";
+  }
+  identity ds3 {
+    base iana-interface-type;
+    description
+      "DS3-MIB.";
+    reference
+      "RFC 3896 - Definitions of Managed Objects for the
+                  DS3/E3 Interface Type";
+  }
+  identity sip {
+    base iana-interface-type;
+    description
+      "SMDS, coffee.";
+    reference
+      "RFC 1694 - Definitions of Managed Objects for SMDS
+                  Interfaces using SMIv2";
+  }
+  identity frameRelay {
+    base iana-interface-type;
+    description
+      "DTE only.";
+    reference
+      "RFC 2115 - Management Information Base for Frame Relay
+                  DTEs Using SMIv2";
+  }
+  identity rs232 {
+    base iana-interface-type;
+    reference
+      "RFC 1659 - Definitions of Managed Objects for RS-232-like
+                  Hardware Devices using SMIv2";
+  }
+  identity para {
+    base iana-interface-type;
+    description
+      "Parallel-port.";
+    reference
+      "RFC 1660 - Definitions of Managed Objects for
+                  Parallel-printer-like Hardware Devices using
+                  SMIv2";
+  }
+  identity arcnet {
+    base iana-interface-type;
+    description
+      "ARCnet.";
+  }
+  identity arcnetPlus {
+    base iana-interface-type;
+    description
+      "ARCnet Plus.";
+  }
+
+
+
+  identity atm {
+    base iana-interface-type;
+    description
+      "ATM cells.";
+  }
+  identity miox25 {
+    base iana-interface-type;
+    reference
+      "RFC 1461 - SNMP MIB extension for Multiprotocol
+                  Interconnect over X.25";
+  }
+  identity sonet {
+    base iana-interface-type;
+    description
+      "SONET or SDH.";
+  }
+  identity x25ple {
+    base iana-interface-type;
+    reference
+      "RFC 2127 - ISDN Management Information Base using SMIv2";
+  }
+  identity iso88022llc {
+    base iana-interface-type;
+  }
+  identity localTalk {
+    base iana-interface-type;
+  }
+  identity smdsDxi {
+    base iana-interface-type;
+  }
+  identity frameRelayService {
+    base iana-interface-type;
+    description
+      "FRNETSERV-MIB.";
+    reference
+      "RFC 2954 - Definitions of Managed Objects for Frame
+                  Relay Service";
+  }
+  identity v35 {
+    base iana-interface-type;
+  }
+  identity hssi {
+    base iana-interface-type;
+  }
+  identity hippi {
+    base iana-interface-type;
+  }
+
+  identity modem {
+    base iana-interface-type;
+    description
+      "Generic modem.";
+  }
+  identity aal5 {
+    base iana-interface-type;
+    description
+      "AAL5 over ATM.";
+  }
+  identity sonetPath {
+    base iana-interface-type;
+  }
+  identity sonetVT {
+    base iana-interface-type;
+  }
+  identity smdsIcip {
+    base iana-interface-type;
+    description
+      "SMDS InterCarrier Interface.";
+  }
+  identity propVirtual {
+    base iana-interface-type;
+    description
+      "Proprietary virtual/internal.";
+    reference
+      "RFC 2863 - The Interfaces Group MIB";
+  }
+  identity propMultiplexor {
+    base iana-interface-type;
+    description
+      "Proprietary multiplexing.";
+    reference
+      "RFC 2863 - The Interfaces Group MIB";
+  }
+  identity ieee80212 {
+    base iana-interface-type;
+    description
+      "100BaseVG.";
+  }
+  identity fibreChannel {
+    base iana-interface-type;
+    description
+      "Fibre Channel.";
+  }
+
+
+
+  identity hippiInterface {
+    base iana-interface-type;
+    description
+      "HIPPI interfaces.";
+  }
+  identity frameRelayInterconnect {
+    base iana-interface-type;
+    status obsolete;
+    description
+      "Obsolete; use either
+       frameRelay(32) or frameRelayService(44).";
+  }
+  identity aflane8023 {
+    base iana-interface-type;
+    description
+      "ATM Emulated LAN for 802.3.";
+  }
+  identity aflane8025 {
+    base iana-interface-type;
+    description
+      "ATM Emulated LAN for 802.5.";
+  }
+  identity cctEmul {
+    base iana-interface-type;
+    description
+      "ATM Emulated circuit.";
+  }
+  identity fastEther {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity isdn {
+    base iana-interface-type;
+    description
+      "ISDN and X.25.";
+    reference
+      "RFC 1356 - Multiprotocol Interconnect on X.25 and ISDN
+                  in the Packet Mode";
+  }
+
+
+
+  identity v11 {
+    base iana-interface-type;
+    description
+      "CCITT V.11/X.21.";
+  }
+  identity v36 {
+    base iana-interface-type;
+    description
+      "CCITT V.36.";
+  }
+  identity g703at64k {
+    base iana-interface-type;
+    description
+      "CCITT G703 at 64Kbps.";
+  }
+  identity g703at2mb {
+    base iana-interface-type;
+    status obsolete;
+    description
+      "Obsolete; see DS1-MIB.";
+  }
+  identity qllc {
+    base iana-interface-type;
+    description
+      "SNA QLLC.";
+  }
+  identity fastEtherFX {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity channel {
+    base iana-interface-type;
+    description
+      "Channel.";
+  }
+  identity ieee80211 {
+    base iana-interface-type;
+    description
+      "Radio spread spectrum.";
+  }
+  identity ibm370parChan {
+    base iana-interface-type;
+    description
+      "IBM System 360/370 OEMI Channel.";
+  }
+  identity escon {
+    base iana-interface-type;
+    description
+      "IBM Enterprise Systems Connection.";
+  }
+  identity dlsw {
+    base iana-interface-type;
+    description
+      "Data Link Switching.";
+  }
+  identity isdns {
+    base iana-interface-type;
+    description
+      "ISDN S/T interface.";
+  }
+  identity isdnu {
+    base iana-interface-type;
+    description
+      "ISDN U interface.";
+  }
+  identity lapd {
+    base iana-interface-type;
+    description
+      "Link Access Protocol D.";
+  }
+  identity ipSwitch {
+    base iana-interface-type;
+    description
+      "IP Switching Objects.";
+  }
+  identity rsrb {
+    base iana-interface-type;
+    description
+      "Remote Source Route Bridging.";
+  }
+  identity atmLogical {
+    base iana-interface-type;
+    description
+      "ATM Logical Port.";
+    reference
+      "RFC 3606 - Definitions of Supplemental Managed Objects
+                  for ATM Interface";
+  }
+  identity ds0 {
+    base iana-interface-type;
+    description
+      "Digital Signal Level 0.";
+    reference
+      "RFC 2494 - Definitions of Managed Objects for the DS0
+                  and DS0 Bundle Interface Type";
+  }
+  identity ds0Bundle {
+    base iana-interface-type;
+    description
+      "Group of ds0s on the same ds1.";
+    reference
+      "RFC 2494 - Definitions of Managed Objects for the DS0
+                  and DS0 Bundle Interface Type";
+  }
+  identity bsc {
+    base iana-interface-type;
+    description
+      "Bisynchronous Protocol.";
+  }
+  identity async {
+    base iana-interface-type;
+    description
+      "Asynchronous Protocol.";
+  }
+  identity cnr {
+    base iana-interface-type;
+    description
+      "Combat Net Radio.";
+  }
+  identity iso88025Dtr {
+    base iana-interface-type;
+    description
+      "ISO 802.5r DTR.";
+  }
+  identity eplrs {
+    base iana-interface-type;
+    description
+      "Ext Pos Loc Report Sys.";
+  }
+  identity arap {
+    base iana-interface-type;
+    description
+      "Appletalk Remote Access Protocol.";
+  }
+  identity propCnls {
+    base iana-interface-type;
+    description
+      "Proprietary Connectionless Protocol.";
+  }
+  identity hostPad {
+    base iana-interface-type;
+    description
+      "CCITT-ITU X.29 PAD Protocol.";
+  }
+  identity termPad {
+    base iana-interface-type;
+    description
+      "CCITT-ITU X.3 PAD Facility.";
+  }
+  identity frameRelayMPI {
+    base iana-interface-type;
+    description
+      "Multiproto Interconnect over FR.";
+  }
+  identity x213 {
+    base iana-interface-type;
+    description
+      "CCITT-ITU X213.";
+  }
+  identity adsl {
+    base iana-interface-type;
+    description
+      "Asymmetric Digital Subscriber Loop.";
+  }
+  identity radsl {
+    base iana-interface-type;
+    description
+      "Rate-Adapt. Digital Subscriber Loop.";
+  }
+  identity sdsl {
+    base iana-interface-type;
+    description
+      "Symmetric Digital Subscriber Loop.";
+  }
+  identity vdsl {
+    base iana-interface-type;
+    description
+      "Very H-Speed Digital Subscrib. Loop.";
+  }
+  identity iso88025CRFPInt {
+    base iana-interface-type;
+    description
+      "ISO 802.5 CRFP.";
+  }
+  identity myrinet {
+    base iana-interface-type;
+    description
+      "Myricom Myrinet.";
+  }
+  identity voiceEM {
+    base iana-interface-type;
+    description
+      "Voice recEive and transMit.";
+  }
+  identity voiceFXO {
+    base iana-interface-type;
+    description
+      "Voice Foreign Exchange Office.";
+  }
+  identity voiceFXS {
+    base iana-interface-type;
+    description
+      "Voice Foreign Exchange Station.";
+  }
+  identity voiceEncap {
+    base iana-interface-type;
+    description
+      "Voice encapsulation.";
+  }
+  identity voiceOverIp {
+    base iana-interface-type;
+    description
+      "Voice over IP encapsulation.";
+  }
+  identity atmDxi {
+    base iana-interface-type;
+    description
+      "ATM DXI.";
+  }
+  identity atmFuni {
+    base iana-interface-type;
+    description
+      "ATM FUNI.";
+  }
+  identity atmIma {
+    base iana-interface-type;
+    description
+      "ATM IMA.";
+  }
+  identity pppMultilinkBundle {
+    base iana-interface-type;
+    description
+      "PPP Multilink Bundle.";
+  }
+  identity ipOverCdlc {
+    base iana-interface-type;
+    description
+      "IBM ipOverCdlc.";
+  }
+  identity ipOverClaw {
+    base iana-interface-type;
+    description
+      "IBM Common Link Access to Workstn.";
+  }
+  identity stackToStack {
+    base iana-interface-type;
+    description
+      "IBM stackToStack.";
+  }
+  identity virtualIpAddress {
+    base iana-interface-type;
+    description
+      "IBM VIPA.";
+  }
+  identity mpc {
+    base iana-interface-type;
+    description
+      "IBM multi-protocol channel support.";
+  }
+  identity ipOverAtm {
+    base iana-interface-type;
+    description
+      "IBM ipOverAtm.";
+    reference
+      "RFC 2320 - Definitions of Managed Objects for Classical IP
+                  and ARP Over ATM Using SMIv2 (IPOA-MIB)";
+  }
+  identity iso88025Fiber {
+    base iana-interface-type;
+    description
+      "ISO 802.5j Fiber Token Ring.";
+  }
+  identity tdlc {
+    base iana-interface-type;
+    description
+      "IBM twinaxial data link control.";
+  }
+  identity gigabitEthernet {
+    base iana-interface-type;
+    status deprecated;
+
+
+    description
+      "Obsoleted via RFC 3635.
+       ethernetCsmacd(6) should be used instead.";
+    reference
+      "RFC 3635 - Definitions of Managed Objects for the
+                  Ethernet-like Interface Types";
+  }
+  identity hdlc {
+    base iana-interface-type;
+    description
+      "HDLC.";
+  }
+  identity lapf {
+    base iana-interface-type;
+    description
+      "LAP F.";
+  }
+  identity v37 {
+    base iana-interface-type;
+    description
+      "V.37.";
+  }
+  identity x25mlp {
+    base iana-interface-type;
+    description
+      "Multi-Link Protocol.";
+  }
+  identity x25huntGroup {
+    base iana-interface-type;
+    description
+      "X25 Hunt Group.";
+  }
+  identity transpHdlc {
+    base iana-interface-type;
+    description
+      "Transp HDLC.";
+  }
+  identity interleave {
+    base iana-interface-type;
+    description
+      "Interleave channel.";
+  }
+  identity fast {
+    base iana-interface-type;
+    description
+      "Fast channel.";
+  }
+
+  identity ip {
+    base iana-interface-type;
+    description
+      "IP (for APPN HPR in IP networks).";
+  }
+  identity docsCableMaclayer {
+    base iana-interface-type;
+    description
+      "CATV Mac Layer.";
+  }
+  identity docsCableDownstream {
+    base iana-interface-type;
+    description
+      "CATV Downstream interface.";
+  }
+  identity docsCableUpstream {
+    base iana-interface-type;
+    description
+      "CATV Upstream interface.";
+  }
+  identity a12MppSwitch {
+    base iana-interface-type;
+    description
+      "Avalon Parallel Processor.";
+  }
+  identity tunnel {
+    base iana-interface-type;
+    description
+      "Encapsulation interface.";
+  }
+  identity coffee {
+    base iana-interface-type;
+    description
+      "Coffee pot.";
+    reference
+      "RFC 2325 - Coffee MIB";
+  }
+  identity ces {
+    base iana-interface-type;
+    description
+      "Circuit Emulation Service.";
+  }
+  identity atmSubInterface {
+    base iana-interface-type;
+    description
+      "ATM Sub Interface.";
+  }
+
+  identity l2vlan {
+    base iana-interface-type;
+    description
+      "Layer 2 Virtual LAN using 802.1Q.";
+  }
+  identity l3ipvlan {
+    base iana-interface-type;
+    description
+      "Layer 3 Virtual LAN using IP.";
+  }
+  identity l3ipxvlan {
+    base iana-interface-type;
+    description
+      "Layer 3 Virtual LAN using IPX.";
+  }
+  identity digitalPowerline {
+    base iana-interface-type;
+    description
+      "IP over Power Lines.";
+  }
+  identity mediaMailOverIp {
+    base iana-interface-type;
+    description
+      "Multimedia Mail over IP.";
+  }
+  identity dtm {
+    base iana-interface-type;
+    description
+      "Dynamic synchronous Transfer Mode.";
+  }
+  identity dcn {
+    base iana-interface-type;
+    description
+      "Data Communications Network.";
+  }
+  identity ipForward {
+    base iana-interface-type;
+    description
+      "IP Forwarding Interface.";
+  }
+  identity msdsl {
+    base iana-interface-type;
+    description
+      "Multi-rate Symmetric DSL.";
+  }
+  identity ieee1394 {
+    base iana-interface-type;
+
+    description
+      "IEEE1394 High Performance Serial Bus.";
+  }
+  identity if-gsn {
+    base iana-interface-type;
+    description
+      "HIPPI-6400.";
+  }
+  identity dvbRccMacLayer {
+    base iana-interface-type;
+    description
+      "DVB-RCC MAC Layer.";
+  }
+  identity dvbRccDownstream {
+    base iana-interface-type;
+    description
+      "DVB-RCC Downstream Channel.";
+  }
+  identity dvbRccUpstream {
+    base iana-interface-type;
+    description
+      "DVB-RCC Upstream Channel.";
+  }
+  identity atmVirtual {
+    base iana-interface-type;
+    description
+      "ATM Virtual Interface.";
+  }
+  identity mplsTunnel {
+    base iana-interface-type;
+    description
+      "MPLS Tunnel Virtual Interface.";
+  }
+  identity srp {
+    base iana-interface-type;
+    description
+      "Spatial Reuse Protocol.";
+  }
+  identity voiceOverAtm {
+    base iana-interface-type;
+    description
+      "Voice over ATM.";
+  }
+  identity voiceOverFrameRelay {
+    base iana-interface-type;
+    description
+      "Voice Over Frame Relay.";
+  }
+  identity idsl {
+    base iana-interface-type;
+    description
+      "Digital Subscriber Loop over ISDN.";
+  }
+  identity compositeLink {
+    base iana-interface-type;
+    description
+      "Avici Composite Link Interface.";
+  }
+  identity ss7SigLink {
+    base iana-interface-type;
+    description
+      "SS7 Signaling Link.";
+  }
+  identity propWirelessP2P {
+    base iana-interface-type;
+    description
+      "Prop. P2P wireless interface.";
+  }
+  identity frForward {
+    base iana-interface-type;
+    description
+      "Frame Forward Interface.";
+  }
+  identity rfc1483 {
+    base iana-interface-type;
+    description
+      "Multiprotocol over ATM AAL5.";
+    reference
+      "RFC 1483 - Multiprotocol Encapsulation over ATM
+                  Adaptation Layer 5";
+  }
+  identity usb {
+    base iana-interface-type;
+    description
+      "USB Interface.";
+  }
+  identity ieee8023adLag {
+    base iana-interface-type;
+    description
+      "IEEE 802.3ad Link Aggregate.";
+  }
+  identity bgppolicyaccounting {
+    base iana-interface-type;
+    description
+      "BGP Policy Accounting.";
+  }
+  identity frf16MfrBundle {
+    base iana-interface-type;
+    description
+      "FRF.16 Multilink Frame Relay.";
+  }
+  identity h323Gatekeeper {
+    base iana-interface-type;
+    description
+      "H323 Gatekeeper.";
+  }
+  identity h323Proxy {
+    base iana-interface-type;
+    description
+      "H323 Voice and Video Proxy.";
+  }
+  identity mpls {
+    base iana-interface-type;
+    description
+      "MPLS.";
+  }
+  identity mfSigLink {
+    base iana-interface-type;
+    description
+      "Multi-frequency signaling link.";
+  }
+  identity hdsl2 {
+    base iana-interface-type;
+    description
+      "High Bit-Rate DSL - 2nd generation.";
+  }
+  identity shdsl {
+    base iana-interface-type;
+    description
+      "Multirate HDSL2.";
+  }
+  identity ds1FDL {
+    base iana-interface-type;
+    description
+      "Facility Data Link (4Kbps) on a DS1.";
+  }
+  identity pos {
+    base iana-interface-type;
+    description
+      "Packet over SONET/SDH Interface.";
+  }
+
+
+
+  identity dvbAsiIn {
+    base iana-interface-type;
+    description
+      "DVB-ASI Input.";
+  }
+  identity dvbAsiOut {
+    base iana-interface-type;
+    description
+      "DVB-ASI Output.";
+  }
+  identity plc {
+    base iana-interface-type;
+    description
+      "Power Line Communications.";
+  }
+  identity nfas {
+    base iana-interface-type;
+    description
+      "Non-Facility Associated Signaling.";
+  }
+  identity tr008 {
+    base iana-interface-type;
+    description
+      "TR008.";
+  }
+  identity gr303RDT {
+    base iana-interface-type;
+    description
+      "Remote Digital Terminal.";
+  }
+  identity gr303IDT {
+    base iana-interface-type;
+    description
+      "Integrated Digital Terminal.";
+  }
+  identity isup {
+    base iana-interface-type;
+    description
+      "ISUP.";
+  }
+  identity propDocsWirelessMaclayer {
+    base iana-interface-type;
+    description
+      "Cisco proprietary Maclayer.";
+  }
+
+
+
+  identity propDocsWirelessDownstream {
+    base iana-interface-type;
+    description
+      "Cisco proprietary Downstream.";
+  }
+  identity propDocsWirelessUpstream {
+    base iana-interface-type;
+    description
+      "Cisco proprietary Upstream.";
+  }
+  identity hiperlan2 {
+    base iana-interface-type;
+    description
+      "HIPERLAN Type 2 Radio Interface.";
+  }
+  identity propBWAp2Mp {
+    base iana-interface-type;
+    description
+      "PropBroadbandWirelessAccesspt2Multipt (use of this value
+       for IEEE 802.16 WMAN interfaces as per IEEE Std 802.16f
+       is deprecated, and ieee80216WMAN(237) should be used
+       instead).";
+  }
+  identity sonetOverheadChannel {
+    base iana-interface-type;
+    description
+      "SONET Overhead Channel.";
+  }
+  identity digitalWrapperOverheadChannel {
+    base iana-interface-type;
+    description
+      "Digital Wrapper.";
+  }
+  identity aal2 {
+    base iana-interface-type;
+    description
+      "ATM adaptation layer 2.";
+  }
+  identity radioMAC {
+    base iana-interface-type;
+    description
+      "MAC layer over radio links.";
+  }
+  identity atmRadio {
+    base iana-interface-type;
+    description
+      "ATM over radio links.";
+  }
+  identity imt {
+    base iana-interface-type;
+    description
+      "Inter-Machine Trunks.";
+  }
+  identity mvl {
+    base iana-interface-type;
+    description
+      "Multiple Virtual Lines DSL.";
+  }
+  identity reachDSL {
+    base iana-interface-type;
+    description
+      "Long Reach DSL.";
+  }
+  identity frDlciEndPt {
+    base iana-interface-type;
+    description
+      "Frame Relay DLCI End Point.";
+  }
+  identity atmVciEndPt {
+    base iana-interface-type;
+    description
+      "ATM VCI End Point.";
+  }
+  identity opticalChannel {
+    base iana-interface-type;
+    description
+      "Optical Channel.";
+  }
+  identity opticalTransport {
+    base iana-interface-type;
+    description
+      "Optical Transport.";
+  }
+  identity propAtm {
+    base iana-interface-type;
+    description
+      "Proprietary ATM.";
+  }
+  identity voiceOverCable {
+    base iana-interface-type;
+    description
+      "Voice Over Cable Interface.";
+  }
+
+
+
+  identity infiniband {
+    base iana-interface-type;
+    description
+      "Infiniband.";
+  }
+  identity teLink {
+    base iana-interface-type;
+    description
+      "TE Link.";
+  }
+  identity q2931 {
+    base iana-interface-type;
+    description
+      "Q.2931.";
+  }
+  identity virtualTg {
+    base iana-interface-type;
+    description
+      "Virtual Trunk Group.";
+  }
+  identity sipTg {
+    base iana-interface-type;
+    description
+      "SIP Trunk Group.";
+  }
+  identity sipSig {
+    base iana-interface-type;
+    description
+      "SIP Signaling.";
+  }
+  identity docsCableUpstreamChannel {
+    base iana-interface-type;
+    description
+      "CATV Upstream Channel.";
+  }
+  identity econet {
+    base iana-interface-type;
+    description
+      "Acorn Econet.";
+  }
+  identity pon155 {
+    base iana-interface-type;
+    description
+      "FSAN 155Mb Symetrical PON interface.";
+  }
+
+
+
+  identity pon622 {
+    base iana-interface-type;
+    description
+      "FSAN 622Mb Symetrical PON interface.";
+  }
+  identity bridge {
+    base iana-interface-type;
+    description
+      "Transparent bridge interface.";
+  }
+  identity linegroup {
+    base iana-interface-type;
+    description
+      "Interface common to multiple lines.";
+  }
+  identity voiceEMFGD {
+    base iana-interface-type;
+    description
+      "Voice E&M Feature Group D.";
+  }
+  identity voiceFGDEANA {
+    base iana-interface-type;
+    description
+      "Voice FGD Exchange Access North American.";
+  }
+  identity voiceDID {
+    base iana-interface-type;
+    description
+      "Voice Direct Inward Dialing.";
+  }
+  identity mpegTransport {
+    base iana-interface-type;
+    description
+      "MPEG transport interface.";
+  }
+  identity sixToFour {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "6to4 interface (DEPRECATED).";
+    reference
+      "RFC 4087 - IP Tunnel MIB";
+  }
+  identity gtp {
+    base iana-interface-type;
+    description
+      "GTP (GPRS Tunneling Protocol).";
+  }
+  identity pdnEtherLoop1 {
+    base iana-interface-type;
+    description
+      "Paradyne EtherLoop 1.";
+  }
+  identity pdnEtherLoop2 {
+    base iana-interface-type;
+    description
+      "Paradyne EtherLoop 2.";
+  }
+  identity opticalChannelGroup {
+    base iana-interface-type;
+    description
+      "Optical Channel Group.";
+  }
+  identity homepna {
+    base iana-interface-type;
+    description
+      "HomePNA ITU-T G.989.";
+  }
+  identity gfp {
+    base iana-interface-type;
+    description
+      "Generic Framing Procedure (GFP).";
+  }
+  identity ciscoISLvlan {
+    base iana-interface-type;
+    description
+      "Layer 2 Virtual LAN using Cisco ISL.";
+  }
+  identity actelisMetaLOOP {
+    base iana-interface-type;
+    description
+      "Acteleis proprietary MetaLOOP High Speed Link.";
+  }
+  identity fcipLink {
+    base iana-interface-type;
+    description
+      "FCIP Link.";
+  }
+  identity rpr {
+    base iana-interface-type;
+    description
+      "Resilient Packet Ring Interface Type.";
+  }
+
+
+
+  identity qam {
+    base iana-interface-type;
+    description
+      "RF Qam Interface.";
+  }
+  identity lmp {
+    base iana-interface-type;
+    description
+      "Link Management Protocol.";
+    reference
+      "RFC 4327 - Link Management Protocol (LMP) Management
+                  Information Base (MIB)";
+  }
+  identity cblVectaStar {
+    base iana-interface-type;
+    description
+      "Cambridge Broadband Networks Limited VectaStar.";
+  }
+  identity docsCableMCmtsDownstream {
+    base iana-interface-type;
+    description
+      "CATV Modular CMTS Downstream Interface.";
+  }
+  identity adsl2 {
+    base iana-interface-type;
+    status deprecated;
+    description
+      "Asymmetric Digital Subscriber Loop Version 2
+       (DEPRECATED/OBSOLETED - please use adsl2plus(238)
+       instead).";
+    reference
+      "RFC 4706 - Definitions of Managed Objects for Asymmetric
+                  Digital Subscriber Line 2 (ADSL2)";
+  }
+  identity macSecControlledIF {
+    base iana-interface-type;
+    description
+      "MACSecControlled.";
+  }
+  identity macSecUncontrolledIF {
+    base iana-interface-type;
+    description
+      "MACSecUncontrolled.";
+  }
+  identity aviciOpticalEther {
+    base iana-interface-type;
+    description
+      "Avici Optical Ethernet Aggregate.";
+  }
+  identity atmbond {
+    base iana-interface-type;
+    description
+      "atmbond.";
+  }
+  identity voiceFGDOS {
+    base iana-interface-type;
+    description
+      "Voice FGD Operator Services.";
+  }
+  identity mocaVersion1 {
+    base iana-interface-type;
+    description
+      "MultiMedia over Coax Alliance (MoCA) Interface
+       as documented in information provided privately to IANA.";
+  }
+  identity ieee80216WMAN {
+    base iana-interface-type;
+    description
+      "IEEE 802.16 WMAN interface.";
+  }
+  identity adsl2plus {
+    base iana-interface-type;
+    description
+      "Asymmetric Digital Subscriber Loop Version 2 -
+       Version 2 Plus and all variants.";
+  }
+  identity dvbRcsMacLayer {
+    base iana-interface-type;
+    description
+      "DVB-RCS MAC Layer.";
+    reference
+      "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+  }
+  identity dvbTdm {
+    base iana-interface-type;
+    description
+      "DVB Satellite TDM.";
+    reference
+      "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+  }
+  identity dvbRcsTdma {
+    base iana-interface-type;
+    description
+      "DVB-RCS TDMA.";
+    reference
+      "RFC 5728 - The SatLabs Group DVB-RCS MIB";
+  }
+  identity x86Laps {
+    base iana-interface-type;
+    description
+      "LAPS based on ITU-T X.86/Y.1323.";
+  }
+  identity wwanPP {
+    base iana-interface-type;
+    description
+      "3GPP WWAN.";
+  }
+  identity wwanPP2 {
+    base iana-interface-type;
+    description
+      "3GPP2 WWAN.";
+  }
+  identity voiceEBS {
+    base iana-interface-type;
+    description
+      "Voice P-phone EBS physical interface.";
+  }
+  identity ifPwType {
+    base iana-interface-type;
+    description
+      "Pseudowire interface type.";
+    reference
+      "RFC 5601 - Pseudowire (PW) Management Information Base (MIB)";
+  }
+  identity ilan {
+    base iana-interface-type;
+    description
+      "Internal LAN on a bridge per IEEE 802.1ap.";
+  }
+  identity pip {
+    base iana-interface-type;
+    description
+      "Provider Instance Port on a bridge per IEEE 802.1ah PBB.";
+  }
+  identity aluELP {
+    base iana-interface-type;
+    description
+      "Alcatel-Lucent Ethernet Link Protection.";
+  }
+  identity gpon {
+    base iana-interface-type;
+    description
+      "Gigabit-capable passive optical networks (G-PON) as per
+       ITU-T G.948.";
+  }
+  identity vdsl2 {
+    base iana-interface-type;
+    description
+      "Very high speed digital subscriber line Version 2
+       (as per ITU-T Recommendation G.993.2).";
+    reference
+      "RFC 5650 - Definitions of Managed Objects for Very High
+                  Speed Digital Subscriber Line 2 (VDSL2)";
+  }
+  identity capwapDot11Profile {
+    base iana-interface-type;
+    description
+      "WLAN Profile Interface.";
+    reference
+      "RFC 5834 - Control and Provisioning of Wireless Access
+                  Points (CAPWAP) Protocol Binding MIB for
+                  IEEE 802.11";
+  }
+  identity capwapDot11Bss {
+    base iana-interface-type;
+    description
+      "WLAN BSS Interface.";
+    reference
+      "RFC 5834 - Control and Provisioning of Wireless Access
+                  Points (CAPWAP) Protocol Binding MIB for
+                  IEEE 802.11";
+  }
+  identity capwapWtpVirtualRadio {
+    base iana-interface-type;
+    description
+      "WTP Virtual Radio Interface.";
+    reference
+      "RFC 5833 - Control and Provisioning of Wireless Access
+                  Points (CAPWAP) Protocol Base MIB";
+  }
+  identity bits {
+    base iana-interface-type;
+    description
+      "bitsport.";
+  }
+  identity docsCableUpstreamRfPort {
+    base iana-interface-type;
+    description
+      "DOCSIS CATV Upstream RF Port.";
+  }
+
+
+  identity cableDownstreamRfPort {
+    base iana-interface-type;
+    description
+      "CATV downstream RF Port.";
+  }
+  identity vmwareVirtualNic {
+    base iana-interface-type;
+    description
+      "VMware Virtual Network Interface.";
+  }
+  identity ieee802154 {
+    base iana-interface-type;
+    description
+      "IEEE 802.15.4 WPAN interface.";
+    reference
+      "IEEE 802.15.4-2006";
+  }
+  identity otnOdu {
+    base iana-interface-type;
+    description
+      "OTN Optical Data Unit.";
+  }
+  identity otnOtu {
+    base iana-interface-type;
+    description
+      "OTN Optical channel Transport Unit.";
+  }
+  identity ifVfiType {
+    base iana-interface-type;
+    description
+      "VPLS Forwarding Instance Interface Type.";
+  }
+  identity g9981 {
+    base iana-interface-type;
+    description
+      "G.998.1 bonded interface.";
+  }
+  identity g9982 {
+    base iana-interface-type;
+    description
+      "G.998.2 bonded interface.";
+  }
+  identity g9983 {
+    base iana-interface-type;
+    description
+      "G.998.3 bonded interface.";
+  }
+
+  identity aluEpon {
+    base iana-interface-type;
+    description
+      "Ethernet Passive Optical Networks (E-PON).";
+  }
+  identity aluEponOnu {
+    base iana-interface-type;
+    description
+      "EPON Optical Network Unit.";
+  }
+  identity aluEponPhysicalUni {
+    base iana-interface-type;
+    description
+      "EPON physical User to Network interface.";
+  }
+  identity aluEponLogicalLink {
+    base iana-interface-type;
+    description
+      "The emulation of a point-to-point link over the EPON
+       layer.";
+  }
+  identity aluGponOnu {
+    base iana-interface-type;
+    description
+      "GPON Optical Network Unit.";
+    reference
+      "ITU-T G.984.2";
+  }
+  identity aluGponPhysicalUni {
+    base iana-interface-type;
+    description
+      "GPON physical User to Network interface.";
+    reference
+      "ITU-T G.984.2";
+  }
+  identity vmwareNicTeam {
+    base iana-interface-type;
+    description
+      "VMware NIC Team.";
+  }
+}
diff --git a/tests/modules/yang/ietf-interfaces@2014-05-08.yang b/tests/modules/yang/ietf-interfaces@2014-05-08.yang
new file mode 100644
index 0000000..ad64425
--- /dev/null
+++ b/tests/modules/yang/ietf-interfaces@2014-05-08.yang
@@ -0,0 +1,725 @@
+module ietf-interfaces {
+
+  namespace "urn:ietf:params:xml:ns:yang:ietf-interfaces";
+  prefix if;
+
+  import ietf-yang-types {
+    prefix yang;
+  }
+
+  organization
+    "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
+
+  contact
+    "WG Web:   <http://tools.ietf.org/wg/netmod/>
+     WG List:  <mailto:netmod@ietf.org>
+
+     WG Chair: Thomas Nadeau
+               <mailto:tnadeau@lucidvision.com>
+
+     WG Chair: Juergen Schoenwaelder
+               <mailto:j.schoenwaelder@jacobs-university.de>
+
+     Editor:   Martin Bjorklund
+               <mailto:mbj@tail-f.com>";
+
+  description
+    "This module contains a collection of YANG definitions for
+     managing network interfaces.
+
+     Copyright (c) 2014 IETF Trust and the persons identified as
+     authors of the code.  All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject
+     to the license terms contained in, the Simplified BSD License
+     set forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (http://trustee.ietf.org/license-info).
+
+     This version of this YANG module is part of RFC 7223; see
+     the RFC itself for full legal notices.";
+
+  revision 2014-05-08 {
+    description
+      "Initial revision.";
+    reference
+      "RFC 7223: A YANG Data Model for Interface Management";
+  }
+
+  /*
+   * Typedefs
+   */
+
+  typedef interface-ref {
+    type leafref {
+      path "/if:interfaces/if:interface/if:name";
+    }
+    description
+      "This type is used by data models that need to reference
+       configured interfaces.";
+  }
+
+  typedef interface-state-ref {
+    type leafref {
+      path "/if:interfaces-state/if:interface/if:name";
+    }
+    description
+      "This type is used by data models that need to reference
+       the operationally present interfaces.";
+  }
+
+  /*
+   * Identities
+   */
+
+  identity interface-type {
+    description
+      "Base identity from which specific interface types are
+       derived.";
+  }
+
+  /*
+   * Features
+   */
+
+  feature arbitrary-names {
+    description
+      "This feature indicates that the device allows user-controlled
+       interfaces to be named arbitrarily.";
+  }
+  feature pre-provisioning {
+    description
+      "This feature indicates that the device supports
+       pre-provisioning of interface configuration, i.e., it is
+       possible to configure an interface whose physical interface
+       hardware is not present on the device.";
+  }
+
+  feature if-mib {
+    description
+      "This feature indicates that the device implements
+       the IF-MIB.";
+    reference
+      "RFC 2863: The Interfaces Group MIB";
+  }
+
+  /*
+   * Configuration data nodes
+   */
+
+  container interfaces {
+    description
+      "Interface configuration parameters.";
+
+    list interface {
+      key "name";
+
+      description
+        "The list of configured interfaces on the device.
+
+         The operational state of an interface is available in the
+         /interfaces-state/interface list.  If the configuration of a
+         system-controlled interface cannot be used by the system
+         (e.g., the interface hardware present does not match the
+         interface type), then the configuration is not applied to
+         the system-controlled interface shown in the
+         /interfaces-state/interface list.  If the configuration
+         of a user-controlled interface cannot be used by the system,
+         the configured interface is not instantiated in the
+         /interfaces-state/interface list.";
+
+     leaf name {
+        type string;
+        description
+          "The name of the interface.
+
+           A device MAY restrict the allowed values for this leaf,
+           possibly depending on the type of the interface.
+           For system-controlled interfaces, this leaf is the
+           device-specific name of the interface.  The 'config false'
+           list /interfaces-state/interface contains the currently
+           existing interfaces on the device.
+
+           If a client tries to create configuration for a
+           system-controlled interface that is not present in the
+           /interfaces-state/interface list, the server MAY reject
+           the request if the implementation does not support
+           pre-provisioning of interfaces or if the name refers to
+           an interface that can never exist in the system.  A
+           NETCONF server MUST reply with an rpc-error with the
+           error-tag 'invalid-value' in this case.
+
+           If the device supports pre-provisioning of interface
+           configuration, the 'pre-provisioning' feature is
+           advertised.
+
+           If the device allows arbitrarily named user-controlled
+           interfaces, the 'arbitrary-names' feature is advertised.
+
+           When a configured user-controlled interface is created by
+           the system, it is instantiated with the same name in the
+           /interface-state/interface list.";
+      }
+
+      leaf description {
+        type string;
+        description
+          "A textual description of the interface.
+
+           A server implementation MAY map this leaf to the ifAlias
+           MIB object.  Such an implementation needs to use some
+           mechanism to handle the differences in size and characters
+           allowed between this leaf and ifAlias.  The definition of
+           such a mechanism is outside the scope of this document.
+
+           Since ifAlias is defined to be stored in non-volatile
+           storage, the MIB implementation MUST map ifAlias to the
+           value of 'description' in the persistently stored
+           datastore.
+
+           Specifically, if the device supports ':startup', when
+           ifAlias is read the device MUST return the value of
+           'description' in the 'startup' datastore, and when it is
+           written, it MUST be written to the 'running' and 'startup'
+           datastores.  Note that it is up to the implementation to
+
+           decide whether to modify this single leaf in 'startup' or
+           perform an implicit copy-config from 'running' to
+           'startup'.
+
+           If the device does not support ':startup', ifAlias MUST
+           be mapped to the 'description' leaf in the 'running'
+           datastore.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAlias";
+      }
+
+      leaf type {
+        type identityref {
+          base interface-type;
+        }
+        mandatory true;
+        description
+          "The type of the interface.
+
+           When an interface entry is created, a server MAY
+           initialize the type leaf with a valid value, e.g., if it
+           is possible to derive the type from the name of the
+           interface.
+
+           If a client tries to set the type of an interface to a
+           value that can never be used by the system, e.g., if the
+           type is not supported or if the type does not match the
+           name of the interface, the server MUST reject the request.
+           A NETCONF server MUST reply with an rpc-error with the
+           error-tag 'invalid-value' in this case.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifType";
+      }
+
+      leaf enabled {
+        type boolean;
+        default "true";
+        description
+          "This leaf contains the configured, desired state of the
+           interface.
+
+           Systems that implement the IF-MIB use the value of this
+           leaf in the 'running' datastore to set
+           IF-MIB.ifAdminStatus to 'up' or 'down' after an ifEntry
+           has been initialized, as described in RFC 2863.
+
+
+
+           Changes in this leaf in the 'running' datastore are
+           reflected in ifAdminStatus, but if ifAdminStatus is
+           changed over SNMP, this leaf is not affected.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAdminStatus";
+      }
+
+      leaf link-up-down-trap-enable {
+        if-feature if-mib;
+        type enumeration {
+          enum enabled {
+            value 1;
+          }
+          enum disabled {
+            value 2;
+          }
+        }
+        description
+          "Controls whether linkUp/linkDown SNMP notifications
+           should be generated for this interface.
+
+           If this node is not configured, the value 'enabled' is
+           operationally used by the server for interfaces that do
+           not operate on top of any other interface (i.e., there are
+           no 'lower-layer-if' entries), and 'disabled' otherwise.";
+        reference
+          "RFC 2863: The Interfaces Group MIB -
+                     ifLinkUpDownTrapEnable";
+      }
+    }
+  }
+
+  /*
+   * Operational state data nodes
+   */
+
+  container interfaces-state {
+    config false;
+    description
+      "Data nodes for the operational state of interfaces.";
+
+    list interface {
+      key "name";
+
+
+
+
+
+      description
+        "The list of interfaces on the device.
+
+         System-controlled interfaces created by the system are
+         always present in this list, whether they are configured or
+         not.";
+
+      leaf name {
+        type string;
+        description
+          "The name of the interface.
+
+           A server implementation MAY map this leaf to the ifName
+           MIB object.  Such an implementation needs to use some
+           mechanism to handle the differences in size and characters
+           allowed between this leaf and ifName.  The definition of
+           such a mechanism is outside the scope of this document.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifName";
+      }
+
+      leaf type {
+        type identityref {
+          base interface-type;
+        }
+        mandatory true;
+        description
+          "The type of the interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifType";
+      }
+
+      leaf admin-status {
+        if-feature if-mib;
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+            description
+              "Not ready to pass packets and not in some test mode.";
+          }
+
+
+
+          enum testing {
+            value 3;
+            description
+              "In some test mode.";
+          }
+        }
+        mandatory true;
+        description
+          "The desired state of the interface.
+
+           This leaf has the same read semantics as ifAdminStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifAdminStatus";
+      }
+
+      leaf oper-status {
+        type enumeration {
+          enum up {
+            value 1;
+            description
+              "Ready to pass packets.";
+          }
+          enum down {
+            value 2;
+            description
+              "The interface does not pass any packets.";
+          }
+          enum testing {
+            value 3;
+            description
+              "In some test mode.  No operational packets can
+               be passed.";
+          }
+          enum unknown {
+            value 4;
+            description
+              "Status cannot be determined for some reason.";
+          }
+          enum dormant {
+            value 5;
+            description
+              "Waiting for some external event.";
+          }
+          enum not-present {
+            value 6;
+            description
+              "Some component (typically hardware) is missing.";
+          }
+          enum lower-layer-down {
+            value 7;
+            description
+              "Down due to state of lower-layer interface(s).";
+          }
+        }
+        mandatory true;
+        description
+          "The current operational state of the interface.
+
+           This leaf has the same semantics as ifOperStatus.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifOperStatus";
+      }
+
+      leaf last-change {
+        type yang:date-and-time;
+        description
+          "The time the interface entered its current operational
+           state.  If the current state was entered prior to the
+           last re-initialization of the local network management
+           subsystem, then this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifLastChange";
+      }
+
+      leaf if-index {
+        if-feature if-mib;
+        type int32 {
+          range "1..2147483647";
+        }
+        mandatory true;
+        description
+          "The ifIndex value for the ifEntry represented by this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifIndex";
+      }
+
+      leaf phys-address {
+        type yang:phys-address;
+        description
+          "The interface's address at its protocol sub-layer.  For
+           example, for an 802.x interface, this object normally
+           contains a Media Access Control (MAC) address.  The
+           interface's media-specific modules must define the bit
+
+
+           and byte ordering and the format of the value of this
+           object.  For interfaces that do not have such an address
+           (e.g., a serial line), this node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifPhysAddress";
+      }
+
+      leaf-list higher-layer-if {
+        type interface-state-ref;
+        description
+          "A list of references to interfaces layered on top of this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf-list lower-layer-if {
+        type interface-state-ref;
+        description
+          "A list of references to interfaces layered underneath this
+           interface.";
+        reference
+          "RFC 2863: The Interfaces Group MIB - ifStackTable";
+      }
+
+      leaf speed {
+        type yang:gauge64;
+        units "bits/second";
+        description
+            "An estimate of the interface's current bandwidth in bits
+             per second.  For interfaces that do not vary in
+             bandwidth or for those where no accurate estimation can
+             be made, this node should contain the nominal bandwidth.
+             For interfaces that have no concept of bandwidth, this
+             node is not present.";
+        reference
+          "RFC 2863: The Interfaces Group MIB -
+                     ifSpeed, ifHighSpeed";
+      }
+
+
+
+
+
+
+
+
+
+      container statistics {
+        description
+          "A collection of interface-related statistics objects.";
+
+        leaf discontinuity-time {
+          type yang:date-and-time;
+          mandatory true;
+          description
+            "The time on the most recent occasion at which any one or
+             more of this interface's counters suffered a
+             discontinuity.  If no such discontinuities have occurred
+             since the last re-initialization of the local management
+             subsystem, then this node contains the time the local
+             management subsystem re-initialized itself.";
+        }
+
+        leaf in-octets {
+          type yang:counter64;
+          description
+            "The total number of octets received on the interface,
+             including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInOctets";
+        }
+
+        leaf in-unicast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were not addressed to a
+             multicast or broadcast address at this sub-layer.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCInUcastPkts";
+        }
+
+
+
+
+        leaf in-broadcast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a broadcast
+             address at this sub-layer.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInBroadcastPkts";
+        }
+
+        leaf in-multicast-pkts {
+          type yang:counter64;
+          description
+            "The number of packets, delivered by this sub-layer to a
+             higher (sub-)layer, that were addressed to a multicast
+             address at this sub-layer.  For a MAC-layer protocol,
+             this includes both Group and Functional addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCInMulticastPkts";
+        }
+
+        leaf in-discards {
+          type yang:counter32;
+          description
+            "The number of inbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being deliverable to a higher-layer
+             protocol.  One possible reason for discarding such a
+             packet could be to free up buffer space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+
+
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInDiscards";
+        }
+
+        leaf in-errors {
+          type yang:counter32;
+          description
+            "For packet-oriented interfaces, the number of inbound
+             packets that contained errors preventing them from being
+             deliverable to a higher-layer protocol.  For character-
+             oriented or fixed-length interfaces, the number of
+             inbound transmission units that contained errors
+             preventing them from being deliverable to a higher-layer
+             protocol.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInErrors";
+        }
+
+        leaf in-unknown-protos {
+          type yang:counter32;
+          description
+            "For packet-oriented interfaces, the number of packets
+             received via the interface that were discarded because
+             of an unknown or unsupported protocol.  For
+             character-oriented or fixed-length interfaces that
+             support protocol multiplexing, the number of
+             transmission units received via the interface that were
+             discarded because of an unknown or unsupported protocol.
+             For any interface that does not support protocol
+             multiplexing, this counter is not present.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifInUnknownProtos";
+        }
+
+
+
+
+
+        leaf out-octets {
+          type yang:counter64;
+          description
+            "The total number of octets transmitted out of the
+             interface, including framing characters.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutOctets";
+        }
+
+        leaf out-unicast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted, and that were not addressed
+             to a multicast or broadcast address at this sub-layer,
+             including those that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifHCOutUcastPkts";
+        }
+
+        leaf out-broadcast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted, and that were addressed to a
+             broadcast address at this sub-layer, including those
+             that were discarded or not sent.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutBroadcastPkts";
+        }
+
+
+        leaf out-multicast-pkts {
+          type yang:counter64;
+          description
+            "The total number of packets that higher-level protocols
+             requested be transmitted, and that were addressed to a
+             multicast address at this sub-layer, including those
+             that were discarded or not sent.  For a MAC-layer
+             protocol, this includes both Group and Functional
+             addresses.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB -
+                       ifHCOutMulticastPkts";
+        }
+
+        leaf out-discards {
+          type yang:counter32;
+          description
+            "The number of outbound packets that were chosen to be
+             discarded even though no errors had been detected to
+             prevent their being transmitted.  One possible reason
+             for discarding such a packet could be to free up buffer
+             space.
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutDiscards";
+        }
+
+        leaf out-errors {
+          type yang:counter32;
+          description
+            "For packet-oriented interfaces, the number of outbound
+             packets that could not be transmitted because of errors.
+             For character-oriented or fixed-length interfaces, the
+             number of outbound transmission units that could not be
+             transmitted because of errors.
+
+
+
+
+             Discontinuities in the value of this counter can occur
+             at re-initialization of the management system, and at
+             other times as indicated by the value of
+             'discontinuity-time'.";
+          reference
+            "RFC 2863: The Interfaces Group MIB - ifOutErrors";
+        }
+      }
+    }
+  }
+}
diff --git a/tests/modules/yang/ietf-ip@2014-06-16.yang b/tests/modules/yang/ietf-ip@2014-06-16.yang
new file mode 100644
index 0000000..1499120
--- /dev/null
+++ b/tests/modules/yang/ietf-ip@2014-06-16.yang
@@ -0,0 +1,758 @@
+module ietf-ip {
+
+ namespace "urn:ietf:params:xml:ns:yang:ietf-ip";
+ prefix ip;
+
+ import ietf-interfaces {
+   prefix if;
+ }
+ import ietf-inet-types {
+   prefix inet;
+ }
+ import ietf-yang-types {
+   prefix yang;
+ }
+
+ organization
+   "IETF NETMOD (NETCONF Data Modeling Language) Working Group";
+
+ contact
+   "WG Web:   <http://tools.ietf.org/wg/netmod/>
+    WG List:  <mailto:netmod@ietf.org>
+
+    WG Chair: Thomas Nadeau
+              <mailto:tnadeau@lucidvision.com>
+
+    WG Chair: Juergen Schoenwaelder
+              <mailto:j.schoenwaelder@jacobs-university.de>
+
+    Editor:   Martin Bjorklund
+              <mailto:mbj@tail-f.com>";
+
+
+
+
+
+
+
+
+
+
+ description
+   "This module contains a collection of YANG definitions for
+    configuring IP implementations.
+
+    Copyright (c) 2014 IETF Trust and the persons identified as
+    authors of the code.  All rights reserved.
+
+    Redistribution and use in source and binary forms, with or
+    without modification, is permitted pursuant to, and subject
+    to the license terms contained in, the Simplified BSD License
+    set forth in Section 4.c of the IETF Trust's Legal Provisions
+    Relating to IETF Documents
+    (http://trustee.ietf.org/license-info).
+
+    This version of this YANG module is part of RFC 7277; see
+    the RFC itself for full legal notices.";
+
+ revision 2014-06-16 {
+   description
+     "Initial revision.";
+   reference
+     "RFC 7277: A YANG Data Model for IP Management";
+ }
+
+ /*
+
+  * Features
+  */
+
+ feature ipv4-non-contiguous-netmasks {
+   description
+     "Indicates support for configuring non-contiguous
+      subnet masks.";
+ }
+
+ feature ipv6-privacy-autoconf {
+   description
+     "Indicates support for Privacy Extensions for Stateless Address
+      Autoconfiguration in IPv6.";
+   reference
+     "RFC 4941: Privacy Extensions for Stateless Address
+                Autoconfiguration in IPv6";
+ }
+
+
+
+
+
+ /*
+  * Typedefs
+  */
+
+ typedef ip-address-origin {
+   type enumeration {
+     enum other {
+       description
+         "None of the following.";
+     }
+     enum static {
+       description
+         "Indicates that the address has been statically
+          configured - for example, using NETCONF or a Command Line
+          Interface.";
+     }
+     enum dhcp {
+       description
+         "Indicates an address that has been assigned to this
+          system by a DHCP server.";
+     }
+     enum link-layer {
+       description
+         "Indicates an address created by IPv6 stateless
+          autoconfiguration that embeds a link-layer address in its
+          interface identifier.";
+     }
+     enum random {
+       description
+         "Indicates an address chosen by the system at
+
+          random, e.g., an IPv4 address within 169.254/16, an
+          RFC 4941 temporary address, or an RFC 7217 semantically
+          opaque address.";
+       reference
+         "RFC 4941: Privacy Extensions for Stateless Address
+                    Autoconfiguration in IPv6
+          RFC 7217: A Method for Generating Semantically Opaque
+                    Interface Identifiers with IPv6 Stateless
+                    Address Autoconfiguration (SLAAC)";
+     }
+   }
+   description
+     "The origin of an address.";
+ }
+
+
+
+ typedef neighbor-origin {
+   type enumeration {
+     enum other {
+       description
+         "None of the following.";
+     }
+     enum static {
+       description
+         "Indicates that the mapping has been statically
+          configured - for example, using NETCONF or a Command Line
+          Interface.";
+     }
+     enum dynamic {
+       description
+         "Indicates that the mapping has been dynamically resolved
+          using, e.g., IPv4 ARP or the IPv6 Neighbor Discovery
+          protocol.";
+     }
+   }
+   description
+     "The origin of a neighbor entry.";
+ }
+
+ /*
+  * Configuration data nodes
+  */
+
+ augment "/if:interfaces/if:interface" {
+   description
+     "Parameters for configuring IP on interfaces.
+
+      If an interface is not capable of running IP, the server
+      must not allow the client to configure these parameters.";
+
+   container ipv4 {
+     presence
+       "Enables IPv4 unless the 'enabled' leaf
+        (which defaults to 'true') is set to 'false'";
+     description
+       "Parameters for the IPv4 address family.";
+
+
+
+
+
+
+
+
+     leaf enabled {
+       type boolean;
+       default true;
+       description
+         "Controls whether IPv4 is enabled or disabled on this
+          interface.  When IPv4 is enabled, this interface is
+          connected to an IPv4 stack, and the interface can send
+          and receive IPv4 packets.";
+     }
+     leaf forwarding {
+       type boolean;
+       default false;
+       description
+         "Controls IPv4 packet forwarding of datagrams received by,
+          but not addressed to, this interface.  IPv4 routers
+          forward datagrams.  IPv4 hosts do not (except those
+          source-routed via the host).";
+     }
+     leaf mtu {
+       type uint16 {
+         range "68..max";
+       }
+       units octets;
+       description
+         "The size, in octets, of the largest IPv4 packet that the
+          interface will send and receive.
+
+          The server may restrict the allowed values for this leaf,
+          depending on the interface's type.
+
+          If this leaf is not configured, the operationally used MTU
+          depends on the interface's type.";
+       reference
+         "RFC 791: Internet Protocol";
+     }
+     list address {
+       key "ip";
+       description
+         "The list of configured IPv4 addresses on the interface.";
+
+       leaf ip {
+         type inet:ipv4-address-no-zone;
+         description
+           "The IPv4 address on the interface.";
+       }
+
+
+
+       choice subnet {
+         mandatory true;
+         description
+           "The subnet can be specified as a prefix-length, or,
+            if the server supports non-contiguous netmasks, as
+            a netmask.";
+         leaf prefix-length {
+           type uint8 {
+             range "0..32";
+           }
+           description
+             "The length of the subnet prefix.";
+         }
+         leaf netmask {
+           if-feature ipv4-non-contiguous-netmasks;
+           type yang:dotted-quad;
+           description
+             "The subnet specified as a netmask.";
+         }
+       }
+     }
+     list neighbor {
+       key "ip";
+       description
+         "A list of mappings from IPv4 addresses to
+          link-layer addresses.
+
+          Entries in this list are used as static entries in the
+          ARP Cache.";
+       reference
+         "RFC 826: An Ethernet Address Resolution Protocol";
+
+       leaf ip {
+         type inet:ipv4-address-no-zone;
+         description
+           "The IPv4 address of the neighbor node.";
+       }
+       leaf link-layer-address {
+         type yang:phys-address;
+         mandatory true;
+         description
+           "The link-layer address of the neighbor node.";
+       }
+     }
+
+   }
+
+
+   container ipv6 {
+     presence
+       "Enables IPv6 unless the 'enabled' leaf
+        (which defaults to 'true') is set to 'false'";
+     description
+       "Parameters for the IPv6 address family.";
+
+     leaf enabled {
+       type boolean;
+       default true;
+       description
+         "Controls whether IPv6 is enabled or disabled on this
+          interface.  When IPv6 is enabled, this interface is
+          connected to an IPv6 stack, and the interface can send
+          and receive IPv6 packets.";
+     }
+     leaf forwarding {
+       type boolean;
+       default false;
+       description
+         "Controls IPv6 packet forwarding of datagrams received by,
+          but not addressed to, this interface.  IPv6 routers
+          forward datagrams.  IPv6 hosts do not (except those
+          source-routed via the host).";
+       reference
+         "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                    Section 6.2.1, IsRouter";
+     }
+     leaf mtu {
+       type uint32 {
+         range "1280..max";
+       }
+       units octets;
+       description
+         "The size, in octets, of the largest IPv6 packet that the
+          interface will send and receive.
+
+          The server may restrict the allowed values for this leaf,
+          depending on the interface's type.
+
+          If this leaf is not configured, the operationally used MTU
+          depends on the interface's type.";
+       reference
+         "RFC 2460: Internet Protocol, Version 6 (IPv6) Specification
+                    Section 5";
+     }
+
+
+     list address {
+       key "ip";
+       description
+         "The list of configured IPv6 addresses on the interface.";
+
+       leaf ip {
+         type inet:ipv6-address-no-zone;
+         description
+           "The IPv6 address on the interface.";
+       }
+       leaf prefix-length {
+         type uint8 {
+           range "0..128";
+         }
+         mandatory true;
+         description
+           "The length of the subnet prefix.";
+       }
+     }
+     list neighbor {
+       key "ip";
+       description
+         "A list of mappings from IPv6 addresses to
+          link-layer addresses.
+
+          Entries in this list are used as static entries in the
+          Neighbor Cache.";
+       reference
+         "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)";
+
+       leaf ip {
+         type inet:ipv6-address-no-zone;
+         description
+           "The IPv6 address of the neighbor node.";
+       }
+       leaf link-layer-address {
+         type yang:phys-address;
+         mandatory true;
+         description
+           "The link-layer address of the neighbor node.";
+       }
+     }
+
+
+
+
+
+
+     leaf dup-addr-detect-transmits {
+       type uint32;
+       default 1;
+       description
+         "The number of consecutive Neighbor Solicitation messages
+          sent while performing Duplicate Address Detection on a
+          tentative address.  A value of zero indicates that
+          Duplicate Address Detection is not performed on
+          tentative addresses.  A value of one indicates a single
+          transmission with no follow-up retransmissions.";
+       reference
+         "RFC 4862: IPv6 Stateless Address Autoconfiguration";
+     }
+     container autoconf {
+       description
+         "Parameters to control the autoconfiguration of IPv6
+          addresses, as described in RFC 4862.";
+       reference
+         "RFC 4862: IPv6 Stateless Address Autoconfiguration";
+
+       leaf create-global-addresses {
+         type boolean;
+         default true;
+         description
+           "If enabled, the host creates global addresses as
+            described in RFC 4862.";
+         reference
+           "RFC 4862: IPv6 Stateless Address Autoconfiguration
+                      Section 5.5";
+       }
+       leaf create-temporary-addresses {
+         if-feature ipv6-privacy-autoconf;
+         type boolean;
+         default false;
+         description
+           "If enabled, the host creates temporary addresses as
+            described in RFC 4941.";
+         reference
+           "RFC 4941: Privacy Extensions for Stateless Address
+                      Autoconfiguration in IPv6";
+       }
+
+
+
+
+
+
+
+       leaf temporary-valid-lifetime {
+         if-feature ipv6-privacy-autoconf;
+         type uint32;
+         units "seconds";
+         default 604800;
+         description
+           "The time period during which the temporary address
+            is valid.";
+         reference
+           "RFC 4941: Privacy Extensions for Stateless Address
+                      Autoconfiguration in IPv6
+                      - TEMP_VALID_LIFETIME";
+       }
+       leaf temporary-preferred-lifetime {
+         if-feature ipv6-privacy-autoconf;
+         type uint32;
+         units "seconds";
+         default 86400;
+         description
+           "The time period during which the temporary address is
+            preferred.";
+         reference
+           "RFC 4941: Privacy Extensions for Stateless Address
+                      Autoconfiguration in IPv6
+                      - TEMP_PREFERRED_LIFETIME";
+       }
+     }
+   }
+ }
+
+ /*
+  * Operational state data nodes
+  */
+
+ augment "/if:interfaces-state/if:interface" {
+   description
+     "Data nodes for the operational state of IP on interfaces.";
+
+   container ipv4 {
+     presence "Present if IPv4 is enabled on this interface";
+     config false;
+     description
+       "Interface-specific parameters for the IPv4 address family.";
+
+
+
+
+
+     leaf forwarding {
+       type boolean;
+       description
+         "Indicates whether IPv4 packet forwarding is enabled or
+          disabled on this interface.";
+     }
+     leaf mtu {
+       type uint16 {
+         range "68..max";
+       }
+       units octets;
+       description
+         "The size, in octets, of the largest IPv4 packet that the
+          interface will send and receive.";
+       reference
+         "RFC 791: Internet Protocol";
+     }
+     list address {
+       key "ip";
+       description
+         "The list of IPv4 addresses on the interface.";
+
+       leaf ip {
+         type inet:ipv4-address-no-zone;
+         description
+           "The IPv4 address on the interface.";
+       }
+       choice subnet {
+         description
+           "The subnet can be specified as a prefix-length, or,
+            if the server supports non-contiguous netmasks, as
+            a netmask.";
+         leaf prefix-length {
+           type uint8 {
+             range "0..32";
+           }
+           description
+             "The length of the subnet prefix.";
+         }
+         leaf netmask {
+           if-feature ipv4-non-contiguous-netmasks;
+           type yang:dotted-quad;
+           description
+             "The subnet specified as a netmask.";
+         }
+       }
+
+
+       leaf origin {
+         type ip-address-origin;
+         description
+           "The origin of this address.";
+       }
+     }
+     list neighbor {
+       key "ip";
+       description
+         "A list of mappings from IPv4 addresses to
+          link-layer addresses.
+
+          This list represents the ARP Cache.";
+       reference
+         "RFC 826: An Ethernet Address Resolution Protocol";
+
+       leaf ip {
+         type inet:ipv4-address-no-zone;
+         description
+           "The IPv4 address of the neighbor node.";
+       }
+       leaf link-layer-address {
+         type yang:phys-address;
+         description
+           "The link-layer address of the neighbor node.";
+       }
+       leaf origin {
+         type neighbor-origin;
+         description
+           "The origin of this neighbor entry.";
+       }
+     }
+
+   }
+
+   container ipv6 {
+     presence "Present if IPv6 is enabled on this interface";
+     config false;
+     description
+       "Parameters for the IPv6 address family.";
+
+
+
+
+
+
+
+
+     leaf forwarding {
+       type boolean;
+       default false;
+       description
+         "Indicates whether IPv6 packet forwarding is enabled or
+          disabled on this interface.";
+       reference
+         "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                    Section 6.2.1, IsRouter";
+     }
+     leaf mtu {
+       type uint32 {
+         range "1280..max";
+       }
+       units octets;
+       description
+         "The size, in octets, of the largest IPv6 packet that the
+          interface will send and receive.";
+       reference
+         "RFC 2460: Internet Protocol, Version 6 (IPv6) Specification
+                    Section 5";
+     }
+     list address {
+       key "ip";
+       description
+         "The list of IPv6 addresses on the interface.";
+
+       leaf ip {
+         type inet:ipv6-address-no-zone;
+         description
+           "The IPv6 address on the interface.";
+       }
+       leaf prefix-length {
+         type uint8 {
+           range "0..128";
+         }
+         mandatory true;
+         description
+           "The length of the subnet prefix.";
+       }
+       leaf origin {
+         type ip-address-origin;
+         description
+           "The origin of this address.";
+       }
+
+
+
+       leaf status {
+         type enumeration {
+           enum preferred {
+             description
+               "This is a valid address that can appear as the
+                destination or source address of a packet.";
+           }
+           enum deprecated {
+             description
+               "This is a valid but deprecated address that should
+                no longer be used as a source address in new
+                communications, but packets addressed to such an
+                address are processed as expected.";
+           }
+           enum invalid {
+             description
+               "This isn't a valid address, and it shouldn't appear
+                as the destination or source address of a packet.";
+           }
+           enum inaccessible {
+             description
+               "The address is not accessible because the interface
+                to which this address is assigned is not
+                operational.";
+           }
+           enum unknown {
+             description
+               "The status cannot be determined for some reason.";
+           }
+           enum tentative {
+             description
+               "The uniqueness of the address on the link is being
+                verified.  Addresses in this state should not be
+                used for general communication and should only be
+                used to determine the uniqueness of the address.";
+           }
+           enum duplicate {
+             description
+               "The address has been determined to be non-unique on
+                the link and so must not be used.";
+           }
+
+
+
+
+
+
+
+           enum optimistic {
+             description
+               "The address is available for use, subject to
+                restrictions, while its uniqueness on a link is
+                being verified.";
+           }
+         }
+         description
+           "The status of an address.  Most of the states correspond
+            to states from the IPv6 Stateless Address
+            Autoconfiguration protocol.";
+         reference
+           "RFC 4293: Management Information Base for the
+                      Internet Protocol (IP)
+                      - IpAddressStatusTC
+            RFC 4862: IPv6 Stateless Address Autoconfiguration";
+       }
+     }
+     list neighbor {
+       key "ip";
+       description
+         "A list of mappings from IPv6 addresses to
+          link-layer addresses.
+
+          This list represents the Neighbor Cache.";
+       reference
+         "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)";
+
+       leaf ip {
+         type inet:ipv6-address-no-zone;
+         description
+           "The IPv6 address of the neighbor node.";
+       }
+       leaf link-layer-address {
+         type yang:phys-address;
+         description
+           "The link-layer address of the neighbor node.";
+       }
+       leaf origin {
+         type neighbor-origin;
+         description
+           "The origin of this neighbor entry.";
+       }
+       leaf is-router {
+         type empty;
+         description
+           "Indicates that the neighbor node acts as a router.";
+       }
+       leaf state {
+         type enumeration {
+           enum incomplete {
+             description
+               "Address resolution is in progress, and the link-layer
+                address of the neighbor has not yet been
+                determined.";
+           }
+           enum reachable {
+             description
+               "Roughly speaking, the neighbor is known to have been
+                reachable recently (within tens of seconds ago).";
+           }
+           enum stale {
+             description
+               "The neighbor is no longer known to be reachable, but
+                until traffic is sent to the neighbor no attempt
+                should be made to verify its reachability.";
+           }
+           enum delay {
+             description
+               "The neighbor is no longer known to be reachable, and
+                traffic has recently been sent to the neighbor.
+                Rather than probe the neighbor immediately, however,
+                delay sending probes for a short while in order to
+                give upper-layer protocols a chance to provide
+                reachability confirmation.";
+           }
+           enum probe {
+             description
+               "The neighbor is no longer known to be reachable, and
+                unicast Neighbor Solicitation probes are being sent
+                to verify reachability.";
+           }
+         }
+         description
+           "The Neighbor Unreachability Detection state of this
+            entry.";
+         reference
+           "RFC 4861: Neighbor Discovery for IP version 6 (IPv6)
+                      Section 7.3.2";
+       }
+     }
+   }
+ }
+}
diff --git a/tests/modules/yang/ietf-origin@2018-02-14.yang b/tests/modules/yang/ietf-origin@2018-02-14.yang
new file mode 100644
index 0000000..3080c91
--- /dev/null
+++ b/tests/modules/yang/ietf-origin@2018-02-14.yang
@@ -0,0 +1,147 @@
+module ietf-origin {
+  yang-version 1.1;
+  namespace "urn:ietf:params:xml:ns:yang:ietf-origin";
+  prefix or;
+
+  import ietf-yang-metadata {
+    prefix md;
+  }
+
+  organization
+    "IETF Network Modeling (NETMOD) Working Group";
+
+  contact
+    "WG Web:   <https://datatracker.ietf.org/wg/netmod/>
+
+     WG List:  <mailto:netmod@ietf.org>
+
+     Author:   Martin Bjorklund
+               <mailto:mbj@tail-f.com>
+
+     Author:   Juergen Schoenwaelder
+               <mailto:j.schoenwaelder@jacobs-university.de>
+
+     Author:   Phil Shafer
+               <mailto:phil@juniper.net>
+
+     Author:   Kent Watsen
+               <mailto:kwatsen@juniper.net>
+
+     Author:   Rob Wilton
+               <rwilton@cisco.com>";
+
+  description
+    "This YANG module defines an 'origin' metadata annotation and a
+     set of identities for the origin value.
+
+     Copyright (c) 2018 IETF Trust and the persons identified as
+     authors of the code.  All rights reserved.
+
+     Redistribution and use in source and binary forms, with or
+     without modification, is permitted pursuant to, and subject to
+     the license terms contained in, the Simplified BSD License set
+     forth in Section 4.c of the IETF Trust's Legal Provisions
+     Relating to IETF Documents
+     (https://trustee.ietf.org/license-info).
+
+     This version of this YANG module is part of RFC 8342
+     (https://www.rfc-editor.org/info/rfc8342); see the RFC itself
+     for full legal notices.";
+
+  revision 2018-02-14 {
+    description
+      "Initial revision.";
+    reference
+      "RFC 8342: Network Management Datastore Architecture (NMDA)";
+  }
+
+  /*
+   * Identities
+   */
+
+  identity origin {
+    description
+      "Abstract base identity for the origin annotation.";
+  }
+
+  identity intended {
+    base origin;
+    description
+      "Denotes configuration from the intended configuration
+       datastore.";
+  }
+
+  identity dynamic {
+    base origin;
+    description
+      "Denotes configuration from a dynamic configuration
+       datastore.";
+  }
+
+  identity system {
+    base origin;
+    description
+      "Denotes configuration originated by the system itself.
+
+       Examples of system configuration include applied configuration
+       for an always-existing loopback interface, or interface
+       configuration that is auto-created due to the hardware
+       currently present in the device.";
+  }
+
+  identity learned {
+    base origin;
+    description
+      "Denotes configuration learned from protocol interactions with
+       other devices, instead of via either the intended
+       configuration datastore or any dynamic configuration
+       datastore.
+
+       Examples of protocols that provide learned configuration
+       include link-layer negotiations, routing protocols, and
+       DHCP.";
+  }
+
+  identity default {
+    base origin;
+    description
+      "Denotes configuration that does not have a configured or
+       learned value but has a default value in use.  Covers both
+       values defined in a 'default' statement and values defined
+       via an explanation in a 'description' statement.";
+  }
+
+  identity unknown {
+    base origin;
+    description
+      "Denotes configuration for which the system cannot identify the
+       origin.";
+  }
+
+  /*
+   * Type definitions
+   */
+
+  typedef origin-ref {
+    type identityref {
+      base origin;
+    }
+    description
+      "An origin identity reference.";
+  }
+
+  /*
+   * Metadata annotations
+   */
+
+  md:annotation origin {
+    type origin-ref;
+    description
+      "The 'origin' annotation can be present on any configuration
+       data node in the operational state datastore.  It specifies
+       from where the node originated.  If not specified for a given
+       configuration data node, then the origin is the same as the
+       origin of its parent node in the data tree.  The origin for
+       any top-level configuration data nodes must be specified.";
+  }
+}
diff --git a/tests/utests/CMakeLists.txt b/tests/utests/CMakeLists.txt
index 5c98b63..0d6c165 100644
--- a/tests/utests/CMakeLists.txt
+++ b/tests/utests/CMakeLists.txt
@@ -16,6 +16,7 @@
 ly_add_utest(NAME new SOURCES data/test_new.c)
 ly_add_utest(NAME parser_xml SOURCES data/test_parser_xml.c)
 ly_add_utest(NAME printer_xml SOURCES data/test_printer_xml.c)
+ly_add_utest(NAME lyb SOURCES data/test_lyb.c)
 ly_add_utest(NAME validation SOURCES data/test_validation.c)
 ly_add_utest(NAME types SOURCES data/test_types.c)
 ly_add_utest(NAME merge SOURCES data/test_merge.c)
diff --git a/tests/utests/data/test_lyb.c b/tests/utests/data/test_lyb.c
new file mode 100644
index 0000000..37b9e5b
--- /dev/null
+++ b/tests/utests/data/test_lyb.c
@@ -0,0 +1,835 @@
+/**
+ * @file test_lyb.c
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief Cmocka tests for LYB binary data format.
+ *
+ * Copyright (c) 2020 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#include <inttypes.h>
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <cmocka.h>
+
+#include "hash_table.h"
+#include "libyang.h"
+#include "tests/config.h"
+
+struct state {
+    struct ly_ctx *ctx;
+    struct lyd_node *dt1, *dt2;
+    char *mem;
+};
+
+static void
+check_data_tree_next(struct lyd_node **start, struct lyd_node **next, struct lyd_node **elem)
+{
+    if (*elem) {
+        goto loop_next;
+    }
+
+loop_begin:
+    LYD_TREE_DFS_BEGIN(*start, *next, *elem) {
+        return;
+loop_next:
+        LYD_TREE_DFS_END(*start, *next, *elem);
+    }
+
+    if (!*next) {
+        /* top-level siblings */
+        *start = (*start)->next;
+        if (!(*start)) {
+            *elem = NULL;
+            return;
+        }
+        goto loop_begin;
+    }
+
+    return;
+}
+
+static void
+check_data_tree(struct lyd_node *root1, struct lyd_node *root2)
+{
+    struct lyd_node *next1, *next2, *elem1 = NULL, *elem2 = NULL, *iter;
+    struct lyd_meta *meta1, *meta2;
+    struct lyd_node_inner *in1, *in2;
+    uint32_t i1, i2;
+
+    for (check_data_tree_next(&root1, &next1, &elem1), check_data_tree_next(&root2, &next2, &elem2);
+         elem1 && elem2;
+         check_data_tree_next(&root1, &next1, &elem1), check_data_tree_next(&root2, &next2, &elem2)) {
+
+        if (elem1->schema != elem2->schema) {
+            fprintf(stderr, "Schema mismatch (\"%s\" and \"%s\").\n", elem1->schema->name, elem2->schema->name);
+            fail();
+        }
+
+        /* check common data node attributes */
+        if (elem1->flags != elem2->flags) {
+            fprintf(stderr, "\"%s\": flags mismatch (\"%u\" and \"%u\").\n", elem1->schema->name, elem1->flags, elem2->flags);
+            fail();
+        }
+
+        /* check data node attributes */
+        for (meta1 = elem1->meta, meta2 = elem2->meta; meta1 && meta2; meta1 = meta1->next, meta2 = meta2->next) {
+            if (meta1->annotation != meta2->annotation) {
+                fprintf(stderr, "\"%s\": meta annotation mismatch.\n", elem1->schema->name);
+                fail();
+            }
+            if (strcmp(meta1->name, meta2->name)) {
+                fprintf(stderr, "\"%s\": meta name mismatch (\"%s\" and \"%s\").\n", elem1->schema->name, meta1->name, meta2->name);
+                fail();
+            }
+            if (lyd_compare_meta(meta1, meta2)) {
+                fprintf(stderr, "\"%s\": meta value mismatch.\n", elem1->schema->name);
+                fail();
+            }
+        }
+        if (meta1) {
+            fprintf(stderr, "\"%s\": meta mismatch (\"%s\" and \"NULL\").\n", elem1->schema->name, meta1->name);
+            fail();
+        }
+        if (meta2) {
+            fprintf(stderr, "\"%s\": meta mismatch (\"NULL\" and \"%s\").\n", elem1->schema->name, meta2->name);
+            fail();
+        }
+
+        /* check specific data node attributes */
+        switch (elem1->schema->nodetype) {
+        case LYS_CONTAINER:
+        case LYS_LIST:
+        case LYS_RPC:
+        case LYS_ACTION:
+        case LYS_NOTIF:
+            in1 = (struct lyd_node_inner *)elem1;
+            in2 = (struct lyd_node_inner *)elem2;
+
+            i1 = 0;
+            LY_LIST_FOR(in1->child, iter) {
+                ++i1;
+            }
+
+            i2 = 0;
+            LY_LIST_FOR(in2->child, iter) {
+                ++i2;
+            }
+
+            if (i1 != i2) {
+                fprintf(stderr, "\"%s\": child count mismatch (%u and %u).\n", elem1->schema->name, i1, i2);
+                fail();
+            }
+
+            if (i1 >= LYD_HT_MIN_ITEMS) {
+                if (!in1->children_ht || !in2->children_ht) {
+                    fprintf(stderr, "\"%s\": missing hash table (%p and %p).\n", elem1->schema->name, in1->children_ht,
+                            in2->children_ht);
+                    fail();
+                }
+
+                LY_LIST_FOR(in1->child, iter) {
+                    if (lyht_find(in1->children_ht, &iter, iter->hash, NULL)) {
+                        fprintf(stderr, "\"%s\": missing child \"%s\" in the hash table 1.\n", elem1->schema->name, iter->schema->name);
+                        fail();
+                    }
+                }
+                LY_LIST_FOR(in2->child, iter) {
+                    if (lyht_find(in2->children_ht, &iter, iter->hash, NULL)) {
+                        fprintf(stderr, "\"%s\": missing child \"%s\" in the hash table 2.\n", elem1->schema->name, iter->schema->name);
+                        fail();
+                    }
+                }
+            }
+            break;
+        case LYS_LEAF:
+        case LYS_LEAFLIST:
+        case LYS_ANYDATA:
+        case LYS_ANYXML:
+            if (lyd_compare(elem1, elem2, 0)) {
+                fprintf(stderr, "\"%s\": value mismatch.\n", elem1->schema->name);
+                fail();
+            }
+            break;
+        default:
+            fprintf(stderr, "Unexpected data node type.\n");
+            fail();
+        }
+
+        if (!elem1->hash) {
+            fprintf(stderr, "\"%s\": hash not calculated.\n", elem1->schema->name);
+            fail();
+        }
+        if (elem1->hash != elem2->hash) {
+            fprintf(stderr, "\"%s\": hashes do not match (%u and %u).\n", elem1->schema->name, elem1->hash, elem2->hash);
+            fail();
+        }
+    }
+
+    if (elem1) {
+        fprintf(stderr, "Schema mismatch (\"%s\" and \"NULL\").\n", elem1->schema->name);
+        fail();
+    }
+    if (elem2) {
+        fprintf(stderr, "Schema mismatch (\"NULL\" and \"%s\").\n", elem2->schema->name);
+        fail();
+    }
+}
+
+static int
+setup_f(void **state)
+{
+    struct state *st;
+
+    (*state) = st = calloc(1, sizeof *st);
+    assert_non_null(st);
+
+    /* libyang context */
+    assert_int_equal(ly_ctx_new(TESTS_DIR_MODULES_YANG, 0, &st->ctx), LY_SUCCESS);
+
+    return 0;
+}
+
+static int
+teardown_f(void **state)
+{
+    struct state *st = (*state);
+
+    lyd_free_siblings(st->dt1);
+    lyd_free_siblings(st->dt2);
+    ly_ctx_destroy(st->ctx, NULL);
+    free(st->mem);
+    free(st);
+    (*state) = NULL;
+
+    return 0;
+}
+
+static void
+test_ietf_interfaces(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+    const char *data_xml =
+    "<interfaces xmlns=\"urn:ietf:params:xml:ns:yang:ietf-interfaces\">"
+        "<interface>"
+            "<name>eth0</name>"
+            "<description>Ethernet 0</description>"
+            "<type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>"
+            "<enabled>true</enabled>"
+            "<ipv4 xmlns=\"urn:ietf:params:xml:ns:yang:ietf-ip\">"
+                "<enabled>true</enabled>"
+                "<mtu>1500</mtu>"
+                "<address>"
+                    "<ip>192.168.2.100</ip>"
+                    "<prefix-length>24</prefix-length>"
+                "</address>"
+            "</ipv4>"
+        "</interface>"
+        "<interface>"
+            "<name>eth1</name>"
+            "<description>Ethernet 1</description>"
+            "<type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>"
+            "<enabled>true</enabled>"
+            "<ipv4 xmlns=\"urn:ietf:params:xml:ns:yang:ietf-ip\">"
+                "<enabled>true</enabled>"
+                "<mtu>1500</mtu>"
+                "<address>"
+                    "<ip>10.10.1.5</ip>"
+                    "<prefix-length>16</prefix-length>"
+                "</address>"
+            "</ipv4>"
+        "</interface>"
+        "<interface>"
+            "<name>gigaeth0</name>"
+            "<description>GigabitEthernet 0</description>"
+            "<type xmlns:ianaift=\"urn:ietf:params:xml:ns:yang:iana-if-type\">ianaift:ethernetCsmacd</type>"
+            "<enabled>false</enabled>"
+        "</interface>"
+    "</interfaces>";
+
+
+    assert_non_null(ly_ctx_load_module(st->ctx, "ietf-ip", NULL));
+    assert_non_null(ly_ctx_load_module(st->ctx, "iana-if-type", NULL));
+
+    st->dt1 = lyd_parse_mem(st->ctx, data_xml, LYD_XML, LYD_OPT_PARSE_ONLY);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYDP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_PARSE_ONLY | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_origin(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+    const char *origin_yang =
+    "module test-origin {"
+    "   namespace \"urn:test-origin\";"
+    "   prefix to;"
+    "   import ietf-origin {"
+    "       prefix or;"
+    "   }"
+    ""
+    "   container cont {"
+    "       leaf leaf1 {"
+    "           type string;"
+    "       }"
+    "       leaf leaf2 {"
+    "           type string;"
+    "       }"
+    "       leaf leaf3 {"
+    "           type uint8;"
+    "       }"
+    "   }"
+    "}";
+    const char *data_xml =
+    "<cont xmlns=\"urn:test-origin\">"
+        "<leaf1 xmlns:or=\"urn:ietf:params:xml:ns:yang:ietf-origin\" or:origin=\"or:default\">value1</leaf1>"
+        "<leaf2>value2</leaf2>"
+        "<leaf3 xmlns:or=\"urn:ietf:params:xml:ns:yang:ietf-origin\" or:origin=\"or:system\">125</leaf3>"
+    "</cont>";
+
+    assert_non_null(lys_parse_mem(st->ctx, origin_yang, LYS_IN_YANG));
+    lys_set_implemented(ly_ctx_get_module_latest(st->ctx, "ietf-origin"));
+
+    st->dt1 = lyd_parse_mem(st->ctx, data_xml, LYD_XML, LYD_OPT_PARSE_ONLY);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYDP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_PARSE_ONLY | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+static void
+test_statements(void **state)
+{
+    struct state *st = (*state);
+    int ret;
+    const char *links_yang =
+    "module links {"
+        "yang-version 1.1;"
+        "namespace \"urn:module2\";"
+        "prefix mod2;"
+
+        "identity just-another-identity {"
+
+        "}"
+
+        "leaf one-leaf {"
+            "type string;"
+        "}"
+
+        "list list-for-augment {"
+            "key keyleaf;"
+
+            "leaf keyleaf {"
+                "type string;"
+            "}"
+
+            "leaf just-leaf {"
+                "type int32;"
+            "}"
+        "}"
+
+        "leaf rleaf {"
+            "type string;"
+        "}"
+
+        "leaf-list llist {"
+            "type string;"
+            "min-elements 0;"
+            "max-elements 100;"
+            "ordered-by user;"
+        "}"
+
+        "grouping rgroup {"
+            "leaf rg1 {"
+                "type string;"
+            "}"
+
+            "leaf rg2 {"
+                "type string;"
+            "}"
+        "}"
+    "}";
+
+    const char *statements_yang =
+    "module statements {"
+        "namespace \"urn:module\";"
+        "prefix mod;"
+        "yang-version 1.1;"
+
+        "import links {"
+            "prefix mod2;"
+        "}"
+
+        "identity random-identity {"
+            "base \"mod2:just-another-identity\";"
+            "base \"another-identity\";"
+        "}"
+
+        "identity another-identity {"
+            "base \"mod2:just-another-identity\";"
+        "}"
+
+        "typedef percent {"
+            "type uint8 {"
+                "range \"0 .. 100\";"
+            "}"
+            "units percent;"
+        "}"
+
+        "container ice-cream-shop {"
+            "container employees {"
+                "list employee {"
+                    "config true;"
+                    "key id;"
+                    "unique name;"
+                    "min-elements 0;"
+                    "max-elements 100;"
+
+                    "leaf id {"
+                        "type uint64;"
+                        "mandatory true;"
+                    "}"
+
+                    "leaf name {"
+                        "type string;"
+                    "}"
+
+                    "leaf age {"
+                        "type uint32;"
+                    "}"
+                "}"
+            "}"
+        "}"
+
+        "container random {"
+            "choice switch {"
+                "case a {"
+                    "leaf aleaf {"
+                        "type string;"
+                        "default aaa;"
+                    "}"
+                "}"
+
+                "case c {"
+                    "leaf cleaf {"
+                        "type string;"
+                    "}"
+                "}"
+            "}"
+
+            "anyxml xml-data;"
+            "anydata any-data;"
+            "leaf-list leaflist {"
+                "type string;"
+                "min-elements 0;"
+                "max-elements 20;"
+                "ordered-by system;"
+            "}"
+
+            "grouping group {"
+                "leaf g1 {"
+                    "mandatory false;"
+                    "type percent;"
+                "}"
+
+                "leaf g2 {"
+                    "type string;"
+                "}"
+            "}"
+
+            "uses group;"
+            "uses mod2:rgroup;"
+
+            "leaf lref {"
+                "type leafref {"
+                    "path \"/mod2:one-leaf\";"
+                "}"
+            "}"
+
+            "leaf iref {"
+                "type identityref {"
+                    "base \"mod2:just-another-identity\";"
+                "}"
+            "}"
+        "}"
+
+        "augment \"/random\" {"
+            "leaf aug-leaf {"
+                "type string;"
+            "}"
+        "}"
+    "}";
+
+    const char *data_xml =
+    "<ice-cream-shop xmlns=\"urn:module\">"
+        "<employees>"
+            "<employee>"
+                "<id>0</id>"
+                "<name>John Doe</name>"
+                "<age>28</age>"
+            "</employee>"
+            "<employee>"
+                "<id>1</id>"
+                "<name>Dohn Joe</name>"
+                "<age>20</age>"
+            "</employee>"
+        "</employees>"
+    "</ice-cream-shop>"
+    "<one-leaf xmlns=\"urn:module2\">reference leaf</one-leaf>"
+    "<random xmlns=\"urn:module\">"
+        "<aleaf>string</aleaf>"
+        "<xml-data><anyxml>data</anyxml></xml-data>"
+        "<any-data><data>any data</data></any-data>"
+        "<leaflist>l0</leaflist>"
+        "<leaflist>l1</leaflist>"
+        "<leaflist>l2</leaflist>"
+        "<g1>40</g1>"
+        "<g2>string</g2>"
+        "<aug-leaf>string</aug-leaf>"
+        "<rg1>string</rg1>"
+        "<rg2>string</rg2>"
+        "<lref>reference leaf</lref>"
+        "<iref>random-identity</iref>"
+    "</random>";
+
+    assert_non_null(lys_parse_mem(st->ctx, links_yang, LYS_IN_YANG));
+    assert_non_null(lys_parse_mem(st->ctx, statements_yang, LYS_IN_YANG));
+
+    st->dt1 = lyd_parse_mem(st->ctx, data_xml, LYD_XML, LYD_OPT_PARSE_ONLY);
+    assert_ptr_not_equal(st->dt1, NULL);
+
+    ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYDP_WITHSIBLINGS);
+    assert_int_equal(ret, 0);
+
+    st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_PARSE_ONLY | LYD_OPT_STRICT);
+    assert_ptr_not_equal(st->dt2, NULL);
+
+    check_data_tree(st->dt1, st->dt2);
+}
+
+// static void
+// test_types(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "types", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/types.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_annotations(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/annotations.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_similar_annot_names(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/similar-annot-names.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_many_child_annot(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/many-childs-annot.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_union(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "union", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/union.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_union2(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "statements", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/union2.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_collisions(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "annotations", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/collisions.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_anydata(void **state)
+// {
+//     struct state *st = (*state);
+//     const struct lys_module *mod;
+//     int ret;
+//     const char *test_anydata =
+//     "module test-anydata {"
+//     "   namespace \"urn:test-anydata\";"
+//     "   prefix ya;"
+//     ""
+//     "   container cont {"
+//     "       anydata ntf;"
+//     "   }"
+//     "}";
+//
+//     assert_non_null(ly_ctx_load_module(st->ctx, "ietf-netconf-notifications", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/ietf-netconf-notifications.json", LYD_JSON, LYD_OPT_NOTIF | LYD_OPT_TRUSTED, NULL);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     /* get notification in LYB format to set as anydata content */
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     lyd_free_withsiblings(st->dt1);
+//     st->dt1 = NULL;
+//
+//     /* now comes the real test, test anydata */
+//     mod = lys_parse_mem(st->ctx, test_anydata, LYS_YANG);
+//     assert_non_null(mod);
+//
+//     st->dt1 = lyd_new(NULL, mod, "cont");
+//     assert_non_null(st->dt1);
+//
+//     assert_non_null(lyd_new_anydata(st->dt1, NULL, "ntf", st->mem, LYD_ANYDATA_LYBD));
+//     st->mem = NULL;
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     ret = lyd_validate(&st->dt1, LYD_OPT_CONFIG, NULL);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+//
+//     /* and also test the embedded notification itself */
+//     free(st->mem);
+//     ret = lyd_lyb_data_length(((struct lyd_node_anydata *)st->dt1->child)->value.mem);
+//     st->mem = malloc(ret);
+//     memcpy(st->mem, ((struct lyd_node_anydata *)st->dt1->child)->value.mem, ret);
+//
+//     lyd_free_withsiblings(st->dt2);
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_NOTIF | LYD_OPT_STRICT | LYD_OPT_NOEXTDEPS, NULL);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     /* parse the JSON again for this comparison */
+//     lyd_free_withsiblings(st->dt1);
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/ietf-netconf-notifications.json", LYD_JSON, LYD_OPT_NOTIF | LYD_OPT_TRUSTED, NULL);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_submodule_feature(void **state)
+// {
+//     struct state *st = (*state);
+//     const struct lys_module *mod;
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     mod = ly_ctx_load_module(st->ctx, "feature-submodule-main", NULL);
+//     assert_non_null(mod);
+//     assert_int_equal(lys_features_enable(mod, "test-submodule-feature"), 0);
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/test-submodule-feature.json", LYD_JSON, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_coliding_augments(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "augment-target", NULL));
+//     assert_non_null(ly_ctx_load_module(st->ctx, "augment0", NULL));
+//     assert_non_null(ly_ctx_load_module(st->ctx, "augment1", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/augment.xml", LYD_XML, LYD_OPT_CONFIG);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+//
+// static void
+// test_leafrefs(void **state)
+// {
+//     struct state *st = (*state);
+//     int ret;
+//
+//     ly_ctx_set_searchdir(st->ctx, TESTS_DIR"/data/files");
+//     assert_non_null(ly_ctx_load_module(st->ctx, "leafrefs2", NULL));
+//
+//     st->dt1 = lyd_parse_path(st->ctx, TESTS_DIR"/data/files/leafrefs2.json", LYD_JSON, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt1, NULL);
+//
+//     ret = lyd_print_mem(&st->mem, st->dt1, LYD_LYB, LYP_WITHSIBLINGS);
+//     assert_int_equal(ret, 0);
+//
+//     st->dt2 = lyd_parse_mem(st->ctx, st->mem, LYD_LYB, LYD_OPT_CONFIG | LYD_OPT_STRICT);
+//     assert_ptr_not_equal(st->dt2, NULL);
+//
+//     check_data_tree(st->dt1, st->dt2);
+// }
+
+int
+main(void)
+{
+    const struct CMUnitTest tests[] = {
+        cmocka_unit_test_setup_teardown(test_ietf_interfaces, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_origin, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_statements, setup_f, teardown_f),
+        /*cmocka_unit_test_setup_teardown(test_types, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_annotations, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_similar_annot_names, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_many_child_annot, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_union, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_union2, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_collisions, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_anydata, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_submodule_feature, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_coliding_augments, setup_f, teardown_f),
+        cmocka_unit_test_setup_teardown(test_leafrefs, setup_f, teardown_f),*/
+    };
+
+    return cmocka_run_group_tests(tests, NULL, NULL);
+}