diff --git a/src/nbi/tests/data/topology-7router-emu-dummy.json b/src/nbi/tests/data/topology-7router-emu-dummy.json
new file mode 100644
index 0000000000000000000000000000000000000000..3bb62262652d0eaab411ac71824af3d167b031dd
--- /dev/null
+++ b/src/nbi/tests/data/topology-7router-emu-dummy.json
@@ -0,0 +1,157 @@
+{
+    "dummy_mode": true,
+    "contexts": [
+        {"context_id": {"context_uuid": {"uuid": "admin"}}}
+    ],
+    "topologies": [
+        {"topology_id": {"context_id": {"context_uuid": {"uuid": "admin"}}, "topology_uuid": {"uuid": "admin"}}}
+    ],
+    "devices": [
+        {"device_id": {"device_uuid": {"uuid": "R1"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R2"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R3"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R4"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R5"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R6"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R7"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+            "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"},
+                {"uuid": "1/3", "type": "copper"}, {"uuid": "2/1", "type": "copper"},
+                {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"},
+                {"uuid": "2/4", "type": "copper"}, {"uuid": "2/5", "type": "copper"},
+                {"uuid": "2/6", "type": "copper"}
+            ]}}}
+        ]}}
+    ],
+    "links": [
+        {"link_id": {"link_uuid": {"uuid": "R1==R2"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R1==R6"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R1==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R2==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R2==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R2"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R4"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R4==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R4==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R4"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R6"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/5"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R6==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R6==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/5"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]}
+    ]
+}
diff --git a/src/nbi/tests/data/topology-7router-emu.json b/src/nbi/tests/data/topology-7router-emu.json
new file mode 100644
index 0000000000000000000000000000000000000000..4174f4fb460c6ff31ff56a45122d9a589f265f80
--- /dev/null
+++ b/src/nbi/tests/data/topology-7router-emu.json
@@ -0,0 +1,156 @@
+{
+    "contexts": [
+        {"context_id": {"context_uuid": {"uuid": "admin"}}}
+    ],
+    "topologies": [
+        {"topology_id": {"context_id": {"context_uuid": {"uuid": "admin"}}, "topology_uuid": {"uuid": "admin"}}}
+    ],
+    "devices": [
+        {"device_id": {"device_uuid": {"uuid": "R1"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R2"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R3"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R4"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R5"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R6"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"}, {"uuid": "1/3", "type": "copper"},
+                {"uuid": "1/4", "type": "copper"}, {"uuid": "1/5", "type": "copper"}, {"uuid": "1/6", "type": "copper"},
+                {"uuid": "2/1", "type": "copper"}, {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"}
+            ]}}}
+        ]}},
+        {"device_id": {"device_uuid": {"uuid": "R7"}}, "device_type": "emu-packet-router", "device_drivers": [0],
+         "device_endpoints": [], "device_operational_status": 1, "device_config": {"config_rules": [
+            {"action": 1, "custom": {"resource_key": "_connect/address", "resource_value": "127.0.0.1"}},
+            {"action": 1, "custom": {"resource_key": "_connect/port", "resource_value": "0"}},
+            {"action": 1, "custom": {"resource_key": "_connect/settings", "resource_value": {"endpoints": [
+                {"uuid": "1/1", "type": "copper"}, {"uuid": "1/2", "type": "copper"},
+                {"uuid": "1/3", "type": "copper"}, {"uuid": "2/1", "type": "copper"},
+                {"uuid": "2/2", "type": "copper"}, {"uuid": "2/3", "type": "copper"},
+                {"uuid": "2/4", "type": "copper"}, {"uuid": "2/5", "type": "copper"},
+                {"uuid": "2/6", "type": "copper"}
+            ]}}}
+        ]}}
+    ],
+    "links": [
+        {"link_id": {"link_uuid": {"uuid": "R1==R2"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R1==R6"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R1==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R2==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R2==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R2"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R2"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R4"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R3==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R4==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R4==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R4"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R4"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R6"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R5==R7"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/5"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R6==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/2"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R6==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R6"}}, "endpoint_uuid": {"uuid": "2/2"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/1"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R1"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/1"}},
+            {"device_id": {"device_uuid": {"uuid": "R1"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R3"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/3"}},
+            {"device_id": {"device_uuid": {"uuid": "R3"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]},
+        {"link_id": {"link_uuid": {"uuid": "R7==R5"}}, "link_endpoint_ids": [
+            {"device_id": {"device_uuid": {"uuid": "R7"}}, "endpoint_uuid": {"uuid": "2/5"}},
+            {"device_id": {"device_uuid": {"uuid": "R5"}}, "endpoint_uuid": {"uuid": "2/3"}}
+        ]}
+    ]
+}
diff --git a/src/nbi/tests/test_ietf_l2vpn.py b/src/nbi/tests/test_ietf_l2vpn.py
index 9aec95c68ac88bf0c3970a89abe6146ed002dcb3..22171ce7090cd69cdbb7736973327e26e6e817f4 100644
--- a/src/nbi/tests/test_ietf_l2vpn.py
+++ b/src/nbi/tests/test_ietf_l2vpn.py
@@ -13,27 +13,63 @@
 # limitations under the License.
 
 import logging
+from common.Constants import DEFAULT_CONTEXT_NAME
+from common.proto.context_pb2 import ContextId
+from common.tools.descriptor.Loader import DescriptorLoader, check_descriptor_load_results, validate_empty_scenario
+from common.tools.object_factory.Context import json_context_id
+from context.client.ContextClient import ContextClient
 from tests.tools.mock_osm.MockOSM import MockOSM
 from .Constants import SERVICE_CONNECTION_POINTS_1, SERVICE_CONNECTION_POINTS_2, SERVICE_TYPE
 from .PrepareTestScenario import ( # pylint: disable=unused-import
     # be careful, order of symbols is important here!
-    mock_service, nbi_service_rest, osm_wim)
+    mock_service, nbi_service_rest, osm_wim, context_client
+)
 
 LOGGER = logging.getLogger(__name__)
 LOGGER.setLevel(logging.DEBUG)
 
+DESCRIPTOR_FILE = 'nbi/tests/data/topology-7router-emu-dummy.json'
 
-def test_nbi_create_connectivity_service_rest_api(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
+JSON_ADMIN_CONTEXT_ID = json_context_id(DEFAULT_CONTEXT_NAME)
+ADMIN_CONTEXT_ID = ContextId(**JSON_ADMIN_CONTEXT_ID)
+
+def test_prepare_environment(context_client : ContextClient) -> None: # pylint: disable=redefined-outer-name
+    validate_empty_scenario(context_client)
+    descriptor_loader = DescriptorLoader(descriptors_file=DESCRIPTOR_FILE, context_client=context_client)
+    results = descriptor_loader.process()
+    check_descriptor_load_results(results, descriptor_loader)
+    descriptor_loader.validate()
+
+    # Verify the scenario has no services/slices
+    response = context_client.GetContext(ADMIN_CONTEXT_ID)
+    assert len(response.topology_ids) == 1
+    assert len(response.service_ids ) == 0
+    assert len(response.slice_ids   ) == 0
+
+def test_create_service(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
     osm_wim.create_connectivity_service(SERVICE_TYPE, SERVICE_CONNECTION_POINTS_1)
 
-def test_nbi_get_connectivity_service_status_rest_api(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
+def test_get_service_status(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
     service_uuid = list(osm_wim.conn_info.keys())[0] # this test adds a single service
     osm_wim.get_connectivity_service_status(service_uuid)
 
-def test_nbi_edit_connectivity_service_rest_api(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
+def test_edit_service(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
     service_uuid = list(osm_wim.conn_info.keys())[0] # this test adds a single service
     osm_wim.edit_connectivity_service(service_uuid, SERVICE_CONNECTION_POINTS_2)
 
-def test_nbi_delete_connectivity_service_rest_api(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
+def test_delete_service(osm_wim : MockOSM): # pylint: disable=redefined-outer-name
     service_uuid = list(osm_wim.conn_info.keys())[0] # this test adds a single service
     osm_wim.delete_connectivity_service(service_uuid)
+
+def test_cleanup_environment(context_client : ContextClient) -> None: # pylint: disable=redefined-outer-name
+    # Verify the scenario has no services/slices
+    response = context_client.GetContext(ADMIN_CONTEXT_ID)
+    assert len(response.topology_ids) == 1
+    assert len(response.service_ids ) == 0
+    assert len(response.slice_ids   ) == 0
+
+    # Load descriptors and validate the base scenario
+    descriptor_loader = DescriptorLoader(descriptors_file=DESCRIPTOR_FILE, context_client=context_client)
+    descriptor_loader.validate()
+    descriptor_loader.unload()
+    validate_empty_scenario(context_client)