[ONOS-4753] Identity/identityref implementation and UT

Change-Id: I40148fa228465555be3bdf410cc294ffc0f34c18
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityInModule.yang b/utils/yangutils/plugin/src/test/resources/IdentityInModule.yang
new file mode 100644
index 0000000..5688615
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/IdentityInModule.yang
@@ -0,0 +1,14 @@
+module IdentityInModule{
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityInModule;
+
+    identity tunnel-type {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    identity ref-address-family {
+        reference "http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml#address-family-numbers-2";
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityIntraFile.yang b/utils/yangutils/plugin/src/test/resources/IdentityIntraFile.yang
new file mode 100644
index 0000000..c61fcfb
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/IdentityIntraFile.yang
@@ -0,0 +1,23 @@
+module IdentityIntraFile {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityIntraFile;
+
+    import "IdentityInModule" {
+        prefix "IdentityInModule";
+    }
+
+    identity ipv4-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityListener.yang b/utils/yangutils/plugin/src/test/resources/IdentityListener.yang
new file mode 100644
index 0000000..a7ef4d2
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/IdentityListener.yang
@@ -0,0 +1,39 @@
+module IdentityListener{
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityListener;
+
+    identity tunnel {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    identity tunnel-type {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    identity ref-address-family {
+        reference "http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml#address-family-numbers-2";
+    }
+
+    identity ipv4-address-family {
+        base ref-address-family;
+    }
+
+    identity ipv6-address-family {
+        base ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityTypedef.yang b/utils/yangutils/plugin/src/test/resources/IdentityTypedef.yang
new file mode 100644
index 0000000..6e8f603
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/IdentityTypedef.yang
@@ -0,0 +1,20 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+
+    identity tunnel {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    leaf tunnel-value {
+        type type15;
+    }
+
+    typedef type15 {
+        type identityref {
+             base tunnel;
+         }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityTypedefUnresolved.yang b/utils/yangutils/plugin/src/test/resources/IdentityTypedefUnresolved.yang
new file mode 100644
index 0000000..d837fd1
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/IdentityTypedefUnresolved.yang
@@ -0,0 +1,16 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+
+    identity tunnel {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    typedef type15 {
+        type identityref {
+             base tunnel;
+         }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/IdentityrefInvalidIdentifier.yang b/utils/yangutils/plugin/src/test/resources/IdentityrefInvalidIdentifier.yang
deleted file mode 100644
index 99a8129..0000000
--- a/utils/yangutils/plugin/src/test/resources/IdentityrefInvalidIdentifier.yang
+++ /dev/null
@@ -1,11 +0,0 @@
-module Test {
-    yang-version 1;
-    namespace http://huawei.com;
-    prefix Ant;
-    grouping currentcheck {
-        leaf invalid-interval {
-            type identityref {
-            }
-        }
-    }
-}
diff --git a/utils/yangutils/plugin/src/test/resources/identityRef/identityRef.yang b/utils/yangutils/plugin/src/test/resources/identityRef/identityRef.yang
new file mode 100644
index 0000000..a7389e7
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/identityRef/identityRef.yang
@@ -0,0 +1,19 @@
+module IdentityTest{
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityTest;
+
+    identity ref-address-family {
+        description "ref-address-family";
+    }
+
+    identity ipv4-address-family {
+        base ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityInModule.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityInModule.yang
new file mode 100644
index 0000000..efaadd6
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityInModule.yang
@@ -0,0 +1,15 @@
+
+module IdentityInModule{
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityInModule;
+
+    identity tunnel-type {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    identity ref-address-family {
+        reference "http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml#address-family-numbers-2";
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityIntraFile.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityIntraFile.yang
new file mode 100644
index 0000000..4036e97
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimport/IdentityIntraFile.yang
@@ -0,0 +1,29 @@
+module IdentityIntraFile {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityIntraFile;
+
+    import "IdentityInModule" {
+        prefix "IdentityInModule";
+    }
+
+    identity ipv4-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile1.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile1.yang
new file mode 100644
index 0000000..b808b11
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile1.yang
@@ -0,0 +1,30 @@
+module syslog1 {
+    yang-version 1;
+    namespace "http://huawei1.com";
+    prefix "sys1";
+
+    import "syslog2" {
+       prefix "sys2";
+    }
+
+    identity ipv4-address-family {
+       base sys2:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+       base sys2:ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile2.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile2.yang
new file mode 100644
index 0000000..2469e24
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile2.yang
@@ -0,0 +1,17 @@
+module syslog2 {
+     yang-version 1;
+     namespace "http://huawei2.com";
+     prefix "sys2";
+
+     import "syslog3" {
+        prefix "sys3";
+     }
+
+     identity tunnel-type {
+         base sys3:final-address-family;
+     }
+
+     identity ref-address-family {
+         base sys3:final-address-family;
+     }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile3.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile3.yang
new file mode 100644
index 0000000..f460bd1
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependency/featurefile3.yang
@@ -0,0 +1,10 @@
+module syslog3 {
+     yang-version 1;
+     namespace "http://huawei3.com";
+     prefix "sys3";
+
+    identity final-address-family {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile1.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile1.yang
new file mode 100644
index 0000000..ec2e48c
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile1.yang
@@ -0,0 +1,29 @@
+module syslog1 {
+     yang-version 1;
+     namespace "http://huawei1.com";
+     prefix "sys1";
+
+     import "syslog2" {
+        prefix "sys2";
+     }
+
+     identity ipv4-address-family {
+        base sys2:ref-address-family;
+     }
+
+     identity ipv6-address-family {
+        base sys2:ref-address-family;
+     }
+
+    leaf tunnel {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile2.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile2.yang
new file mode 100644
index 0000000..25e66af
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile2.yang
@@ -0,0 +1,18 @@
+module syslog2 {
+     yang-version 1;
+     namespace "http://huawei2.com";
+     prefix "sys2";
+
+     import "syslog3" {
+        prefix "sys3";
+     }
+
+     identity tunnel-type {
+         base sys3:final-address-family;
+     }
+
+     identity ref-address-family {
+         base sys3:final-address-family;
+     }
+}
+
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile3.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile3.yang
new file mode 100644
index 0000000..f638139
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityimportdependencyUndefined/featurefile3.yang
@@ -0,0 +1,5 @@
+module syslog3 {
+     yang-version 1;
+     namespace "http://huawei3.com";
+     prefix "sys3";
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile1.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile1.yang
new file mode 100644
index 0000000..fe987ea
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile1.yang
@@ -0,0 +1,27 @@
+module syslog1 {
+    yang-version 1;
+    namespace "http://huawei3.com";
+    prefix "sys1";
+
+    include "syslog2";
+
+    identity ipv4-address-family {
+       base ref-address-family;
+    }
+
+    identity ipv6-address-family {
+       base ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile2.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile2.yang
new file mode 100644
index 0000000..14fd83c
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile2.yang
@@ -0,0 +1,19 @@
+submodule syslog2 {
+     yang-version 1;
+     belongs-to "syslog1" {
+         prefix "sys1";
+     }
+
+     import "syslog3" {
+        prefix "sys3";
+     }
+
+     identity tunnel-type {
+         base sys3:final-address-family;
+     }
+
+     identity ref-address-family {
+         base sys3:final-address-family;
+     }
+}
+
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile3.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile3.yang
new file mode 100644
index 0000000..aa056f0
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependency/featurefile3.yang
@@ -0,0 +1,10 @@
+module syslog3 {
+     yang-version 1;
+     namespace "http://huawei3.com";
+     prefix "sys3";
+
+     identity final-address-family {
+         description
+            "Base identity from which specific tunnel types are derived.";
+     }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile1.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile1.yang
new file mode 100644
index 0000000..bc4878f
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile1.yang
@@ -0,0 +1,27 @@
+module syslog1 {
+    yang-version 1;
+    namespace "http://huawei3.com";
+    prefix "sys1";
+
+    include "syslog2";
+
+    identity ipv4-address-family {
+       base sys2:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+       base sys2:ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base sys2:ref-address-family;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile2.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile2.yang
new file mode 100644
index 0000000..14fd83c
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile2.yang
@@ -0,0 +1,19 @@
+submodule syslog2 {
+     yang-version 1;
+     belongs-to "syslog1" {
+         prefix "sys1";
+     }
+
+     import "syslog3" {
+        prefix "sys3";
+     }
+
+     identity tunnel-type {
+         base sys3:final-address-family;
+     }
+
+     identity ref-address-family {
+         base sys3:final-address-family;
+     }
+}
+
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile3.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile3.yang
new file mode 100644
index 0000000..f638139
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityincludedependencyUndefined/featurefile3.yang
@@ -0,0 +1,5 @@
+module syslog3 {
+     yang-version 1;
+     namespace "http://huawei3.com";
+     prefix "sys3";
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityInModule.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityInModule.yang
new file mode 100644
index 0000000..e42ad86
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityInModule.yang
@@ -0,0 +1,27 @@
+module syslog3 {
+     yang-version 1;
+     namespace "http://huawei3.com";
+     prefix "sys3";
+
+     include "syslog4";
+
+     identity ipv4-address-family {
+         base ref-address-family;
+     }
+
+     identity ipv6-address-family {
+         base ref-address-family;
+     }
+
+    leaf tunnel {
+         type identityref {
+             base ref-address-family;
+         }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base ref-address-family;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityIntraFile.yang b/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityIntraFile.yang
new file mode 100644
index 0000000..ffa1a7d
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentityinlude/IdentityIntraFile.yang
@@ -0,0 +1,15 @@
+submodule syslog4 {
+     yang-version 1;
+     belongs-to "syslog3" {
+         prefix "sys3";
+     }
+
+     identity tunnel-type {
+         description
+            "Base identity from which specific tunnel types are derived.";
+     }
+
+     identity ref-address-family {
+         reference "http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml#address-family-numbers-2";
+     }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityInModule.yang b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityInModule.yang
new file mode 100644
index 0000000..5688615
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityInModule.yang
@@ -0,0 +1,14 @@
+module IdentityInModule{
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityInModule;
+
+    identity tunnel-type {
+        description
+           "Base identity from which specific tunnel types are derived.";
+    }
+
+    identity ref-address-family {
+        reference "http://www.iana.org/assignments/address-family-numbers/address-family-numbers.xhtml#address-family-numbers-2";
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityIntraFile.yang b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityIntraFile.yang
new file mode 100644
index 0000000..fcb2984
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityIntraFile.yang
@@ -0,0 +1,35 @@
+module IdentityIntraFile {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityIntraFile;
+
+    import "IdentityInModule" {
+        prefix "IdentityInModule";
+    }
+
+    identity ipv4-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    leaf tunnel {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+
+    leaf-list network-ref {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+
+    typedef type15 {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityTypedef.yang b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityTypedef.yang
new file mode 100644
index 0000000..6a58976
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileidentitytypedef/IdentityTypedef.yang
@@ -0,0 +1,31 @@
+module IdentityTypedef {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix IdentityTypedef;
+
+    import "IdentityInModule" {
+        prefix "IdentityInModule";
+    }
+
+    identity ipv4-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    identity ipv6-address-family {
+        base IdentityInModule:ref-address-family;
+    }
+
+    leaf tunnel {
+        type type15;
+    }
+
+    leaf-list network-ref {
+        type type15;
+    }
+
+    typedef type15 {
+        type identityref {
+            base IdentityInModule:ref-address-family;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileietf/ietf-te-types.yang b/utils/yangutils/plugin/src/test/resources/interfileietf/ietf-te-types.yang
index 6268832..ffa1984 100644
--- a/utils/yangutils/plugin/src/test/resources/interfileietf/ietf-te-types.yang
+++ b/utils/yangutils/plugin/src/test/resources/interfileietf/ietf-te-types.yang
@@ -56,7 +56,7 @@
        reference "RFC3209";
      }
 
-     /*identity tunnel-type {
+     identity tunnel-type {
        description
          "Base identity from which specific tunnel types are
          derived.";
@@ -254,7 +254,7 @@
        base lsp-encoding-types;
        description
          "Line (e.g., 8B/10B) LSP encoding";
-     }*/
+     }
 
      /* TE basic features */
      feature p2mp-te {
@@ -452,7 +452,7 @@
        }
      }
 
-     /*identity route-usage-type {
+     identity route-usage-type {
        description
          "Base identity for route usage";
      }
@@ -576,7 +576,7 @@
        description
          "The set of attribute filters associated with a
          tunnel any of which renders a link unacceptable";
-     }*/
+     }
 
      typedef admin-group {
        type binary {
@@ -605,7 +605,7 @@
        description "SRLG type";
      }
 
-     /*identity path-computation-srlg-type {
+     identity path-computation-srlg-type {
        description
          "Base identity for SRLG path computation";
      }
@@ -632,7 +632,7 @@
        base path-computation-srlg-type;
        description
          "Include weighted SRLG check in path computation";
-     }*/
+     }
 
      typedef te-metric {
        type uint32;