[ONOS-4744] Leafref implementation and UT
Change-Id: I151797185e0bb1695c0640b667ae76ef87c4d4b0
diff --git a/utils/yangutils/plugin/src/test/resources/InstanceIdentifierInvalidIdentifier.yang b/utils/yangutils/plugin/src/test/resources/InstanceIdentifierListener.yang
similarity index 100%
rename from utils/yangutils/plugin/src/test/resources/InstanceIdentifierInvalidIdentifier.yang
rename to utils/yangutils/plugin/src/test/resources/InstanceIdentifierListener.yang
diff --git a/utils/yangutils/plugin/src/test/resources/LeafrefInvalidIdentifier.yang b/utils/yangutils/plugin/src/test/resources/LeafrefInvalidIdentifier.yang
deleted file mode 100644
index 4737b6c..0000000
--- a/utils/yangutils/plugin/src/test/resources/LeafrefInvalidIdentifier.yang
+++ /dev/null
@@ -1,8 +0,0 @@
-module Test {
-    yang-version 1;
-    namespace http://huawei.com;
-    prefix Ant;
-    leaf-list invalid-interval {
-        type leafref;
-    }
-}
diff --git a/utils/yangutils/plugin/src/test/resources/PathListener.yang b/utils/yangutils/plugin/src/test/resources/PathListener.yang
new file mode 100644
index 0000000..c4dae28
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/PathListener.yang
@@ -0,0 +1,31 @@
+module PathListener {
+    namespace "test";
+    prefix test;
+     list interface {
+         key "name";
+         leaf name {
+             type string;
+         }
+         leaf admin-status {
+             type string;
+         }
+         list address {
+             key "ip";
+             leaf ip {
+                 type string;
+             }
+         }
+     }
+     container default-address {
+         leaf ifname {
+             type leafref {
+                 path "../../test:interface/test:name";
+             }
+         }
+         leaf status {
+             type leafref {
+                 path "/test:interface[name = current()/../ifname]/test:admin-status";
+             }
+         }
+     }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueForLeafref.yang b/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueForLeafref.yang
new file mode 100644
index 0000000..c4dae28
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueForLeafref.yang
@@ -0,0 +1,31 @@
+module PathListener {
+    namespace "test";
+    prefix test;
+     list interface {
+         key "name";
+         leaf name {
+             type string;
+         }
+         leaf admin-status {
+             type string;
+         }
+         list address {
+             key "ip";
+             leaf ip {
+                 type string;
+             }
+         }
+     }
+     container default-address {
+         leaf ifname {
+             type leafref {
+                 path "../../test:interface/test:name";
+             }
+         }
+         leaf status {
+             type leafref {
+                 path "/test:interface[name = current()/../ifname]/test:admin-status";
+             }
+         }
+     }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueInInstanceIdentifier.yang b/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueInInstanceIdentifier.yang
new file mode 100644
index 0000000..e3e15bf
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/RequireInstanceDefaultValueInInstanceIdentifier.yang
@@ -0,0 +1,7 @@
+module PathListener {
+    namespace "test";
+    prefix test;
+    leaf admin-status {
+        type instance-identifier;
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/RequireInstanceFalse.yang b/utils/yangutils/plugin/src/test/resources/RequireInstanceFalse.yang
new file mode 100644
index 0000000..0a2ba4f
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/RequireInstanceFalse.yang
@@ -0,0 +1,9 @@
+module PathListener {
+    namespace "test";
+    prefix test;
+    leaf admin-status {
+        type instance-identifier {
+            require-instance "false";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/RequireInstanceTrue.yang b/utils/yangutils/plugin/src/test/resources/RequireInstanceTrue.yang
new file mode 100644
index 0000000..cace8c5
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/RequireInstanceTrue.yang
@@ -0,0 +1,32 @@
+module PathListener {
+    namespace "test";
+    prefix test;
+     list interface {
+         key "name";
+         leaf name {
+             type string;
+         }
+         leaf admin-status {
+             type string;
+         }
+         list address {
+             key "ip";
+             leaf ip {
+                 type string;
+             }
+         }
+     }
+     container default-address {
+         leaf ifname {
+             type leafref {
+                 path "../../test:interface/test:name";
+                 require-instance true;
+             }
+         }
+         leaf status {
+             type leafref {
+                 path "/test:interface[name = current()/../ifname]/test:admin-status";
+             }
+         }
+     }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByLeafref.yang b/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByLeafref.yang
new file mode 100644
index 0000000..941b56b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByLeafref.yang
@@ -0,0 +1,28 @@
+module syslog {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix "sys";
+    feature local-storage {
+        description
+            "This feature means the device supports local
+             storage (memory, flash or disk) that can be used to
+             store syslog messages.";
+    }
+
+    container speed {
+        leaf local-storage-limit {
+             if-feature local-storage;
+             type uint64;
+             units "kilobyte";
+             config false;
+             description
+                  "The amount of local storage that can be
+                   used to hold syslog messages.";
+         }
+     }
+     leaf storage-value {
+         type leafref {
+             path "/speed/local-storage-limit";
+         }
+     }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByMultiLeafref.yang b/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByMultiLeafref.yang
new file mode 100644
index 0000000..f57fa6b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfFileLinkingWithFeatureReferredByMultiLeafref.yang
@@ -0,0 +1,40 @@
+module syslog {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix "sys";
+    feature local-storage {
+        description
+            "This feature means the device supports local
+             storage (memory, flash or disk) that can be used to
+             store syslog messages.";
+    }
+    feature main-storage {
+        description
+            "This feature means the device supports main
+             storage that can be used to
+             store syslog messages.";
+    }
+
+    container speed {
+        leaf local-storage-limit {
+             if-feature local-storage;
+             type leafref {
+                 path "/value";
+             }
+             units "kilobyte";
+             config false;
+             description
+                  "The amount of local storage that can be
+                   used to hold syslog messages.";
+        }
+    }
+    leaf storage-value {
+        type leafref {
+            path "/speed/local-storage-limit";
+        }
+    }
+    leaf value {
+        if-feature main-storage;
+        type uint64;
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang
new file mode 100644
index 0000000..e5de10b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang
@@ -0,0 +1,22 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type status;
+            description
+            "Identifies a network.";
+        }
+    }
+    typedef status {
+        type uint8;
+    }
+    leaf network-ref {
+        type leafref {
+            path "/networks";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesntHavePath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesntHavePath.yang
new file mode 100644
index 0000000..90b9efc
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefDoesntHavePath.yang
@@ -0,0 +1,17 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf-list network-ref {
+        type leafref;
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGrouping.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGrouping.yang
new file mode 100644
index 0000000..d5622d4
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGrouping.yang
@@ -0,0 +1,30 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        grouping input {
+            leaf network-id {
+                type string;
+                description
+                "Identifies a network.";
+            }
+        }
+        input {
+            leaf network-id {
+                type uint8;
+                description
+                "Identifies a network.";
+            }
+        }
+        output {
+        }
+    }
+    leaf network-ref {
+        type leafref {
+        path "/networks/input/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingInModule.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingInModule.yang
new file mode 100644
index 0000000..85a7e42
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingInModule.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    grouping networks {
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    container current {
+        leaf network-ref {
+            type leafref {
+            path "/networks/network-id";
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpc.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpc.yang
new file mode 100644
index 0000000..cc6a9f1
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpc.yang
@@ -0,0 +1,28 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        grouping input {
+            leaf network-id {
+                type string;
+                description
+                "Identifies a network.";
+            }
+        }
+        input {
+            leaf network-id {
+                type uint8;
+                description
+                "Identifies a network.";
+            }
+        }
+    }
+    leaf network-ref {
+        type leafref {
+        path "/networks/input/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpcRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpcRelPath.yang
new file mode 100644
index 0000000..477832d
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToGroupingWithInputInRpcRelPath.yang
@@ -0,0 +1,28 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        grouping input {
+            leaf network-id {
+                type string;
+                description
+                "Identifies a network.";
+            }
+        }
+        input {
+            leaf network-id {
+                type uint8;
+                description
+                "Identifies a network.";
+            }
+        }
+    }
+    leaf network-ref {
+        type leafref {
+            path "../networks/input/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang
new file mode 100644
index 0000000..7f7f5d1
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+            type leafref {
+            path "/define/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNodeRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNodeRelPath.yang
new file mode 100644
index 0000000..9681d76
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidNodeRelPath.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+            type leafref {
+            path "../define/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidRootNodeRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidRootNodeRelPath.yang
new file mode 100644
index 0000000..7e3d216
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToInvalidRootNodeRelPath.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+            type leafref {
+            path "../../../define/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafInInputOfRpc.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafInInputOfRpc.yang
new file mode 100644
index 0000000..0a397dd
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafInInputOfRpc.yang
@@ -0,0 +1,23 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        input {
+            leaf network-id {
+                type uint8;
+                description
+                "Identifies a network.";
+            }
+        }
+        output {
+        }
+    }
+    leaf network-ref {
+        type leafref {
+        path "/networks/input/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafListInInputOfRpc.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafListInInputOfRpc.yang
new file mode 100644
index 0000000..917c434
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInModuleReferToLeafListInInputOfRpc.yang
@@ -0,0 +1,23 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        input {
+            leaf-list network-id {
+                type uint8;
+                description
+                "Identifies a network.";
+            }
+        }
+        output {
+        }
+    }
+    leaf-list network-ref {
+        type leafref {
+        path "/networks/input/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang
new file mode 100644
index 0000000..b61be6a
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang
@@ -0,0 +1,33 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            typedef node {
+                type leafref {
+                    path "/invalid-interval";
+                }
+            }
+            container present {
+                typedef name {
+                    type node;
+                }
+                leaf interval {
+                    type name;
+                }
+            }
+        }
+    }
+    leaf-list invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefModuleReferToLeafListInInputOfRpc.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefModuleReferToLeafListInInputOfRpc.yang
new file mode 100644
index 0000000..59e7a98
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefModuleReferToLeafListInInputOfRpc.yang
@@ -0,0 +1,26 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    rpc networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        input {
+            leaf-list network-id {
+                type network-ref;
+                description
+                "Identifies a network.";
+            }
+            leaf id {
+                type uint8;
+            }
+        }
+        output {
+        }
+    }
+    typedef network-ref {
+        type leafref {
+            path "/networks/input/id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainer.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainer.yang
new file mode 100644
index 0000000..ae42100
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainer.yang
@@ -0,0 +1,22 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type network-ref;
+            description
+            "Identifies a network.";
+        }
+        leaf id {
+            type uint8;
+        }
+    }
+    typedef network-ref {
+        type leafref {
+            path "/networks/id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainerRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainerRelPath.yang
new file mode 100644
index 0000000..93d8e94
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefInTypedefReferToContainerRelPath.yang
@@ -0,0 +1,22 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type network-ref;
+            description
+            "Identifies a network.";
+        }
+        leaf id {
+            type uint8;
+        }
+    }
+    typedef network-ref {
+        type leafref {
+            path "../id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafIsInModuleWithReferredTypeUnion.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafIsInModuleWithReferredTypeUnion.yang
new file mode 100644
index 0000000..edf6bfa
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafIsInModuleWithReferredTypeUnion.yang
@@ -0,0 +1,28 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf name {
+                    type leafref {
+                        path "/invalid-interval";
+                    }
+                }
+            }
+        }
+    }
+    leaf invalid-interval {
+        type union {
+            type int32;
+            type enumeration {
+                enum "unbounded";
+            }
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang
new file mode 100644
index 0000000..a3e0f29
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefIsInDeepTreeAndLeafListIsInModuleWithReferredTypeEnumeration.yang
@@ -0,0 +1,27 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type leafref {
+                        path "/invalid-interval";
+                    }
+                }
+            }
+        }
+    }
+    leaf-list invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherDerivedType.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherDerivedType.yang
new file mode 100644
index 0000000..eb2668e
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherDerivedType.yang
@@ -0,0 +1,22 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type status;
+            description
+            "Identifies a network.";
+        }
+    }
+    typedef status {
+        type uint8;
+    }
+    leaf network-ref {
+        type leafref {
+            path "/networks/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherLeafref.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherLeafref.yang
new file mode 100644
index 0000000..26ccd1f
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToAnotherLeafref.yang
@@ -0,0 +1,26 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type leafref {
+                path "/status/current";
+            }
+            description
+            "Identifies a network.";
+        }
+    }
+    container status {
+        leaf current {
+            type uint8;
+        }
+    }
+    leaf network-ref {
+        type leafref {
+            path "/networks/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeaf.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeaf.yang
new file mode 100644
index 0000000..81fc331
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeaf.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+        type leafref {
+        path "/networks/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafList.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafList.yang
new file mode 100644
index 0000000..ec9a6d3
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafList.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf-list network-ref {
+        type leafref {
+        path "/networks/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafRelPath.yang
new file mode 100644
index 0000000..05ef0d2
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToContainerLeafRelPath.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+        type leafref {
+            path "../networks/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafref.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafref.yang
new file mode 100644
index 0000000..1bf423d
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafref.yang
@@ -0,0 +1,45 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type transmitter;
+                }
+            }
+        }
+    }
+    container reference {
+        list found {
+            key "define";
+            leaf define {
+                type string;
+            }
+            container reciever {
+                leaf remove {
+                    type leafref {
+                        path "/valid/standard/present/name";
+                    }
+                }
+            }
+        }
+    }
+    typedef transmitter {
+        type leafref {
+            path "/invalid-interval";
+        }
+    }
+    leaf invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafrefRelType.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafrefRelType.yang
new file mode 100644
index 0000000..5570f38
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToDerivedTypeReferringToLeafWithLeafrefRelType.yang
@@ -0,0 +1,45 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type transmitter;
+                }
+            }
+        }
+    }
+    container reference {
+        list found {
+            key "define";
+            leaf define {
+                type string;
+            }
+            container reciever {
+                leaf remove {
+                    type leafref {
+                        path "../../../../valid/standard/present/name";
+                    }
+                }
+            }
+        }
+    }
+    typedef transmitter {
+        type leafref {
+            path "../../../../invalid-interval";
+        }
+    }
+    leaf invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafref.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafref.yang
new file mode 100644
index 0000000..fd75d32
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafref.yang
@@ -0,0 +1,50 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type leafref {
+                        path "/transmitter/send";
+                    }
+                }
+            }
+        }
+    }
+    container reference {
+        list found {
+            key "define";
+            leaf define {
+                type string;
+            }
+            container reciever {
+                leaf remove {
+                    type leafref {
+                        path "/valid/standard/present/name";
+                    }
+                }
+            }
+        }
+    }
+    list transmitter {
+        key "send";
+        leaf send {
+            type leafref {
+                path "/invalid-interval";
+            }
+        }
+    }
+    leaf-list invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafrefRelPath.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafrefRelPath.yang
new file mode 100644
index 0000000..890bbaa
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleLeafrefRelPath.yang
@@ -0,0 +1,50 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type leafref {
+                        path "../../../../transmitter/send";
+                    }
+                }
+            }
+        }
+    }
+    container reference {
+        list found {
+            key "define";
+            leaf define {
+                type string;
+            }
+            container reciever {
+                leaf remove {
+                    type leafref {
+                        path "../../../../valid/standard/present/name";
+                    }
+                }
+            }
+        }
+    }
+    list transmitter {
+        key "send";
+        leaf send {
+            type leafref {
+                path "../../invalid-interval";
+            }
+        }
+    }
+    leaf-list invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleTypedef.yang b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleTypedef.yang
new file mode 100644
index 0000000..4b286d2
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/SelfResolutionWhenLeafrefReferToMultipleTypedef.yang
@@ -0,0 +1,43 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    list valid {
+        key "define";
+        leaf define {
+            type string;
+        }
+        container standard {
+            container present {
+                leaf-list name {
+                    type transmitter;
+                }
+            }
+        }
+    }
+    container reference {
+        list found {
+            key "define";
+            leaf define {
+                type string;
+            }
+            container reciever {
+                leaf remove {
+                    type leafref {
+                        path "/valid/standard/present/name";
+                    }
+                }
+            }
+        }
+    }
+    typedef transmitter {
+        type invalid-interval;
+    }
+    typedef invalid-interval {
+        type enumeration {
+            enum 10m;
+            enum 100m;
+            enum auto;
+        }
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interFileInvalidNode/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang b/utils/yangutils/plugin/src/test/resources/interFileInvalidNode/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang
new file mode 100644
index 0000000..7f7f5d1
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interFileInvalidNode/SelfResolutionWhenLeafrefInModuleReferToInvalidNode.yang
@@ -0,0 +1,19 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type uint8;
+            description
+            "Identifies a network.";
+        }
+    }
+    leaf network-ref {
+            type leafref {
+            path "/define/network-id";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafref/module1.yang b/utils/yangutils/plugin/src/test/resources/interfileleafref/module1.yang
new file mode 100644
index 0000000..d33cf1e
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafref/module1.yang
@@ -0,0 +1,16 @@
+module module1 {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    import module2 {
+        prefix p;
+    }
+    leaf invalid-interval {
+        type leafref {
+            path "/p:hello";
+        }
+    }
+    leaf hello {
+        type string;
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafref/module2.yang b/utils/yangutils/plugin/src/test/resources/interfileleafref/module2.yang
new file mode 100644
index 0000000..28a869b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafref/module2.yang
@@ -0,0 +1,8 @@
+module module2 {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant2;
+    leaf hello {
+        type string;
+    }
+}
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module1.yang b/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module1.yang
new file mode 100644
index 0000000..4cfb53d
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module1.yang
@@ -0,0 +1,28 @@
+module module1 {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology";
+    prefix "tet";
+    import module2 {
+        prefix "nt";
+    }
+    grouping te-node-tunnel-termination-capability {
+        description
+        "Termination capability of a tunnel termination point on a
+        TE node.";
+        list termination-capability {
+            key "link-tp";
+            description
+            "The termination capabilities between
+            tunnel-termination-point and link termination-point.
+            The capability information can be used to compute
+            the tunnel path.";
+            leaf link-tp {
+                type leafref {
+                    path "/nt:termination-point/nt:tp-id";
+                }
+                description
+                "Link termination point.";
+            }
+        } // termination-capability
+    } // te-node-tunnel-termination-capability
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module2.yang b/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module2.yang
new file mode 100644
index 0000000..822d90b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafreffromgroupingreferstootherfile/module2.yang
@@ -0,0 +1,11 @@
+module module2 {
+    yang-version 1;
+    namespace
+      "urn:ietf:params:xml:ns:yang:ietf-inet-types";
+    prefix inet;
+    container termination-point {
+        leaf tp-id {
+            type string;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ieft-inet-types.yang b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ieft-inet-types.yang
new file mode 100644
index 0000000..c393dbf
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ieft-inet-types.yang
@@ -0,0 +1,11 @@
+module ietf-inet-types {
+    yang-version 1;
+    namespace
+      "urn:ietf:params:xml:ns:yang:ietf-inet-types";
+    prefix inet;
+    typedef tp-ref {
+        type leafref {
+            path "/nwtp:value";
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network-topology.yang b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network-topology.yang
new file mode 100644
index 0000000..7e080c5
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network-topology.yang
@@ -0,0 +1,28 @@
+module ietf-network-topology {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-te-topology";
+    prefix "tet";
+    import ietf-network {
+        prefix "nt";
+    }
+    grouping te-node-tunnel-termination-capability {
+        description
+        "Termination capability of a tunnel termination point on a
+        TE node.";
+        list termination-capability {
+            key "link-tp";
+            description
+            "The termination capabilities between
+            tunnel-termination-point and link termination-point.
+            The capability information can be used to compute
+            the tunnel path.";
+            leaf link-tp {
+                type leafref {
+                    path "/nt:termination-point/nt:tp-id";
+                }
+                description
+                "Link termination point.";
+            }
+        } // termination-capability
+    } // te-node-tunnel-termination-capability
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network.yang b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network.yang
new file mode 100644
index 0000000..49a6a04
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafrefreferstomultipleleafrefinmultiplefiles/ietf-network.yang
@@ -0,0 +1,14 @@
+module ietf-network {
+    yang-version 1;
+    namespace
+      "urn:ietf:params:xml:ns:yang:ietf-inet-types";
+    prefix nw;
+    import ietf-inet-types {
+       prefix inet;
+    }
+    container termination-point {
+        leaf tp-id {
+            type string;
+        }
+    }
+}
\ No newline at end of file
diff --git a/utils/yangutils/plugin/src/test/resources/interfileleafrefwithinvaliddestinationnode/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang b/utils/yangutils/plugin/src/test/resources/interfileleafrefwithinvaliddestinationnode/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang
new file mode 100644
index 0000000..e5de10b
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/resources/interfileleafrefwithinvaliddestinationnode/SelfResolutionWhenLeafrefDoesNotReferToLeafOrLeafList.yang
@@ -0,0 +1,22 @@
+module ietf-network {
+    yang-version 1;
+    namespace "urn:ietf:params:xml:ns:yang:ietf-network";
+    prefix nd;
+    container networks {
+        description
+        "Serves as top-level container for a list of networks.";
+        leaf network-id {
+            type status;
+            description
+            "Identifies a network.";
+        }
+    }
+    typedef status {
+        type uint8;
+    }
+    leaf network-ref {
+        type leafref {
+            path "/networks";
+        }
+    }
+}
\ No newline at end of file