[pbh]: Add YANG UT.

Signed-off-by: Nazarii Hnydyn <nazariig@nvidia.com>

src/sonic-yang-models/tests/files/sample_config_db.json

@@ -630,6 +630,80 @@
                 ]
             }
         },
+        "PBH_HASH": {
+            "inner_ip_proto": {
+                "hash_field": "INNER_IP_PROTOCOL",
+                "sequence_id": "1"
+            },
+            "inner_l4_dst_port": {
+                "hash_field": "INNER_L4_DST_PORT",
+                "sequence_id": "2"
+            },
+            "inner_l4_src_port": {
+                "hash_field": "INNER_L4_SRC_PORT",
+                "sequence_id": "2"
+            },
+            "inner_dst_ipv4": {
+                "hash_field": "INNER_DST_IPV4",
+                "ipv4_mask": "255.0.0.0",
+                "sequence_id": "3"
+            },
+            "inner_src_ipv4": {
+                "hash_field": "INNER_SRC_IPV4",
+                "ipv4_mask": "0.0.0.255",
+                "sequence_id": "3"
+            },
+            "inner_dst_ipv6": {
+                "hash_field": "INNER_DST_IPV6",
+                "ipv6_mask": "ffff::",
+                "sequence_id": "4"
+            },
+            "inner_src_ipv6": {
+                "hash_field": "INNER_SRC_IPV6",
+                "ipv6_mask": "::ffff",
+                "sequence_id": "4"
+            }
+        },
+        "PBH_RULE": {
+            "pbh_table|nvgre": {
+                "priority": "1",
+                "gre_key": "0x2500/0xffffff00",
+                "inner_ether_type": "0x86dd/0xffff",
+                "hash_list": [
+                    "inner_ip_proto",
+                    "inner_l4_dst_port",
+                    "inner_l4_src_port",
+                    "inner_dst_ipv6",
+                    "inner_src_ipv6"
+                ],
+                "packet_action": "SET_ECMP_HASH"
+            },
+            "pbh_table|vxlan": {
+                "priority": "2",
+                "ip_protocol": "0x11/0xff",
+                "l4_dst_port": "0x12b5/0xffff",
+                "inner_ether_type": "0x0800/0xffff",
+                "hash_list": [
+                    "inner_ip_proto",
+                    "inner_l4_dst_port",
+                    "inner_l4_src_port",
+                    "inner_dst_ipv4",
+                    "inner_src_ipv4"
+                ],
+                "packet_action": "SET_LAG_HASH"
+            }
+        },
+        "PBH_TABLE": {
+            "pbh_table": {
+                "interface_list": [
+                    "Ethernet0",
+                    "Ethernet4",
+                    "PortChannel0003",
+                    "PortChannel0004"
+                ],
+                "description": "NVGRE and VxLAN"
+            }
+        },
         "INTERFACE": {
             "Ethernet112": {},
             "Ethernet14": {},

src/sonic-yang-models/tests/yang_model_tests/tests/pbh.json

@@ -0,0 +1,91 @@
+{
+    "PBH_TABLE_RULE_HASH_VALID": {
+        "desc": "Configure PBH_TABLE, PBH_RULE and PBH_HASH."
+    },
+    "PBH_TABLE_INVALID_INTERFACE": {
+        "desc": "Configure non-existing PORT/PORTCHANNEL in PBH_TABLE.",
+        "eStrKey" : "InvalidValue"
+    },
+    "PBH_TABLE_INVALID_DESCRIPTION": {
+        "desc": "Configure invalid DESCRIPTION in PBH_TABLE.",
+        "eStrKey" : "Range"
+    },
+    "PBH_RULE_INVALID_TABLE": {
+        "desc": "Configure non-existing PBH_TABLE in PBH_RULE.",
+        "eStrKey": "LeafRef"
+    },
+    "PBH_RULE_INVALID_PRIORITY": {
+        "desc": "Configure invalid PRIORITY in PBH_RULE.",
+        "eStrKey": "InvalidValue"
+    },
+    "PBH_RULE_INVALID_GRE_KEY": {
+        "desc": "Configure invalid GRE_KEY in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_IP_PROTOCOL": {
+        "desc": "Configure invalid IP_PROTOCOL in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_IPV6_NEXT_HEADER": {
+        "desc": "Configure invalid IPV6_NEXT_HEADER in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_L4_DST_PORT": {
+        "desc": "Configure invalid L4_DST_PORT in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_INNER_ETHER_TYPE": {
+        "desc": "Configure invalid INNER_ETHER_TYPE in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_HASH": {
+        "desc": "Configure non-existing PBH_HASH in PBH_RULE.",
+        "eStrKey" : "LeafRef"
+    },
+    "PBH_RULE_INVALID_PACKET_ACTION": {
+        "desc": "Configure invalid PACKET_ACTION in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_FLOW_COUNTER": {
+        "desc": "Configure invalid FLOW_COUNTER in PBH_RULE.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_DEFAULT_VALUE_PACKET_ACTION": {
+        "desc": "Verify default value for PACKET_ACTION field in PBH_RULE.",
+        "eStrKey" : "Verify",
+        "verify": {
+            "xpath": "/sonic-pbh:sonic-pbh/PBH_RULE/PBH_RULE_LIST[table_name='pbh_table'][rule_name='nvgre']/packet_action",
+            "key": "sonic-pbh:packet_action",
+            "value": "SET_ECMP_HASH"
+        }
+    },
+    "PBH_RULE_DEFAULT_VALUE_FLOW_COUNTER": {
+        "desc": "Verify default value for FLOW_COUNTER field in PBH_RULE.",
+        "eStrKey" : "Verify",
+        "verify": {
+            "xpath": "/sonic-pbh:sonic-pbh/PBH_RULE/PBH_RULE_LIST[table_name='pbh_table'][rule_name='nvgre']/flow_counter",
+            "key": "sonic-pbh:flow_counter",
+            "value": "DISABLED"
+        }
+    },
+    "PBH_HASH_INVALID_HASH_FIELD": {
+        "desc": "Configure invalid HASH_FIELD in PBH_HASH.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_HASH_FIELD_IPV6_MASK_MISMATCH": {
+        "desc": "Configure HASH_FIELD (INNER_DST_IPV4) with IPV6_MASK in PBH_HASH.",
+        "eStrKey" : "When"
+    },
+    "PBH_RULE_INVALID_IPV4_MASK": {
+        "desc": "Configure invalid IPV4_MASK in PBH_HASH.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_IPV6_MASK": {
+        "desc": "Configure invalid IPV6_MASK in PBH_HASH.",
+        "eStrKey" : "Pattern"
+    },
+    "PBH_RULE_INVALID_SEQUENCE_ID": {
+        "desc": "Configure invalid SEQUENCE_ID in PBH_HASH.",
+        "eStrKey" : "InvalidValue"
+    }
+}