fix some pylint issues
[transportpce.git] / tests / transportpce_tests / 2.2.1 / test_end2end.py
index 1b1aab3dbc29b74ba8f3dee1616fa1c99159ba10..6555bcf154963c6baf0f83fa79be317107774770 100644 (file)
 ##############################################################################
 
 
+import unittest
 import json
-import os
-import psutil
-import requests
-import signal
-import shutil
-import subprocess
 import time
-import unittest
-import test_utils
+import requests
+from common import test_utils
 
 
 class TransportPCEFulltesting(unittest.TestCase):
 
-    odl_process = None
-    sim_process1 = None
-    sim_process2 = None
-    sim_process3 = None
-    sim_process4 = None
-    restconf_baseurl = "http://localhost:8181/restconf"
+    processes = None
     WAITING = 20  # nominal value is 300
 
-# START_IGNORE_XTESTING
-
     @classmethod
     def setUpClass(cls):
-        cls.sim_process1 = test_utils.start_sim('xpdra')
-
-        cls.sim_process2 = test_utils.start_sim('roadma')
-
-        cls.sim_process3 = test_utils.start_sim('roadmc')
-
-        cls.sim_process4 = test_utils.start_sim('xpdrc')
-        print("all sims started")
-
-        cls.odl_process = test_utils.start_tpce()
-        time.sleep(80)
-        print("opendaylight started")
+        cls.processes = test_utils.start_tpce()
+        cls.processes = test_utils.start_sims(['xpdra', 'roadma', 'roadmc', 'xpdrc'])
 
     @classmethod
     def tearDownClass(cls):
-        for child in psutil.Process(cls.odl_process.pid).children():
-            child.send_signal(signal.SIGINT)
-            child.wait()
-        cls.odl_process.send_signal(signal.SIGINT)
-        cls.odl_process.wait()
-        for child in psutil.Process(cls.sim_process1.pid).children():
-            child.send_signal(signal.SIGINT)
-            child.wait()
-        cls.sim_process1.send_signal(signal.SIGINT)
-        cls.sim_process1.wait()
-        for child in psutil.Process(cls.sim_process2.pid).children():
-            child.send_signal(signal.SIGINT)
-            child.wait()
-        cls.sim_process2.send_signal(signal.SIGINT)
-        cls.sim_process2.wait()
-        for child in psutil.Process(cls.sim_process3.pid).children():
-            child.send_signal(signal.SIGINT)
-            child.wait()
-        cls.sim_process3.send_signal(signal.SIGINT)
-        cls.sim_process3.wait()
-        for child in psutil.Process(cls.sim_process4.pid).children():
-            child.send_signal(signal.SIGINT)
-            child.wait()
-        cls.sim_process4.send_signal(signal.SIGINT)
-        cls.sim_process4.wait()
+        for process in cls.processes:
+            test_utils.shutdown_process(process)
         print("all processes killed")
 
     def setUp(self):  # instruction executed before each test method
         print("execution of {}".format(self.id().split(".")[-1]))
 
-# END_IGNORE_XTESTING
-
-#  connect netconf devices
     def test_01_connect_xpdrA(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/XPDR-A1"
-               .format(self.restconf_baseurl))
-        data = {"node": [{
-            "node-id": "XPDR-A1",
-            "netconf-node-topology:username": "admin",
-            "netconf-node-topology:password": "admin",
-            "netconf-node-topology:host": "127.0.0.1",
-            "netconf-node-topology:port": test_utils.sims['xpdra']['port'],
-            "netconf-node-topology:tcp-only": "false",
-            "netconf-node-topology:pass-through": {}}]}
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.created)
-        time.sleep(20)
+        response = test_utils.mount_device("XPDR-A1", 'xpdra')
+        self.assertEqual(response.status_code, requests.codes.created, test_utils.CODE_SHOULD_BE_201)
 
     def test_02_connect_xpdrC(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/XPDR-C1"
-               .format(self.restconf_baseurl))
-        data = {"node": [{
-            "node-id": "XPDR-C1",
-            "netconf-node-topology:username": "admin",
-            "netconf-node-topology:password": "admin",
-            "netconf-node-topology:host": "127.0.0.1",
-            "netconf-node-topology:port": test_utils.sims['xpdrc']['port'],
-            "netconf-node-topology:tcp-only": "false",
-            "netconf-node-topology:pass-through": {}}]}
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.created)
-        time.sleep(20)
+        response = test_utils.mount_device("XPDR-C1", 'xpdrc')
+        self.assertEqual(response.status_code, requests.codes.created, test_utils.CODE_SHOULD_BE_201)
 
     def test_03_connect_rdmA(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/ROADM-A1"
-               .format(self.restconf_baseurl))
-        data = {"node": [{
-            "node-id": "ROADM-A1",
-            "netconf-node-topology:username": "admin",
-            "netconf-node-topology:password": "admin",
-            "netconf-node-topology:host": "127.0.0.1",
-            "netconf-node-topology:port": test_utils.sims['roadma']['port'],
-            "netconf-node-topology:tcp-only": "false",
-            "netconf-node-topology:pass-through": {}}]}
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.created)
-        time.sleep(20)
+        response = test_utils.mount_device("ROADM-A1", 'roadma')
+        self.assertEqual(response.status_code, requests.codes.created, test_utils.CODE_SHOULD_BE_201)
 
     def test_04_connect_rdmC(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/ROADM-C1"
-               .format(self.restconf_baseurl))
-        data = {"node": [{
-            "node-id": "ROADM-C1",
-            "netconf-node-topology:username": "admin",
-            "netconf-node-topology:password": "admin",
-            "netconf-node-topology:host": "127.0.0.1",
-            "netconf-node-topology:port": test_utils.sims['roadmc']['port'],
-            "netconf-node-topology:tcp-only": "false",
-            "netconf-node-topology:pass-through": {}}]}
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.created)
-        time.sleep(20)
+        response = test_utils.mount_device("ROADM-C1", 'roadmc')
+        self.assertEqual(response.status_code, requests.codes.created, test_utils.CODE_SHOULD_BE_201)
 
     def test_05_connect_xprdA_N1_to_roadmA_PP1(self):
-        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -173,17 +65,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Xponder Roadm Link created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_06_connect_roadmA_PP1_to_xpdrA_N1(self):
-        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -196,17 +87,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Roadm Xponder links created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_07_connect_xprdC_N1_to_roadmC_PP1(self):
-        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -219,17 +109,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Xponder Roadm Link created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_08_connect_roadmC_PP1_to_xpdrC_N1(self):
-        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -242,10 +131,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Roadm Xponder links created successfully', res["output"]["result"])
@@ -256,7 +144,7 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/ietf-network:networks/network/openroadm-topology/ietf-network-topology:"
                "link/ROADM-A1-DEG2-DEG2-TTP-TXRXtoROADM-C1-DEG1-DEG1-TTP-TXRX/org-openroadm-network-topology:"
                "OMS-attributes/span"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"span": {
             "auto-spanloss": "true",
             "spanloss-base": 11.4,
@@ -267,10 +155,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "fiber-type": "smf",
                 "SRLG-length": 100000,
                 "pmd": 0.5}]}}
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "PUT", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.created)
 
     def test_10_add_omsAttributes_ROADMC_ROADMA(self):
@@ -278,7 +165,7 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/ietf-network:networks/network/openroadm-topology/ietf-network-topology:"
                "link/ROADM-C1-DEG1-DEG1-TTP-TXRXtoROADM-A1-DEG2-DEG2-TTP-TXRX/org-openroadm-network-topology:"
                "OMS-attributes/span"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"span": {
             "auto-spanloss": "true",
             "spanloss-base": 11.4,
@@ -289,16 +176,15 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "fiber-type": "smf",
                 "SRLG-length": 100000,
                 "pmd": 0.5}]}}
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "PUT", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "PUT", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.created)
 
 # test service-create for Eth service from xpdr to xpdr
     def test_11_create_eth_service1(self):
         url = ("{}/operations/org-openroadm-service:service-create"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -387,11 +273,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "operator-contact": "pw1234"
                 }
                 }
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('PCE calculation in progress',
@@ -400,11 +284,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_12_get_eth_service1(self):
         url = ("{}/operational/org-openroadm-service:service-list/services/service1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertEqual(
@@ -421,10 +303,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/SRG1-PP1-TXRX-DEG2-TTP-TXRX-1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -448,10 +329,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-C1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/SRG1-PP1-TXRX-DEG1-TTP-TXRX-1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -473,9 +353,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_15_check_topo_XPDRA(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/XPDR-A1-XPDR1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         liste_tp = res['node'][0]['ietf-network-topology:termination-point']
@@ -492,9 +372,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_16_check_topo_ROADMA_SRG1(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-SRG1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertNotIn({u'index': 1},
@@ -511,9 +391,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_17_check_topo_ROADMA_DEG1(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-DEG2"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertNotIn({u'index': 1},
@@ -531,7 +411,7 @@ class TransportPCEFulltesting(unittest.TestCase):
         time.sleep(3)
 
     def test_18_connect_xprdA_N2_to_roadmA_PP2(self):
-        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -544,17 +424,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Xponder Roadm Link created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_19_connect_roadmA_PP2_to_xpdrA_N2(self):
-        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -567,17 +446,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Roadm Xponder links created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_20_connect_xprdC_N2_to_roadmC_PP2(self):
-        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-xpdr-rdm-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -590,17 +468,16 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Xponder Roadm Link created successfully', res["output"]["result"])
         time.sleep(2)
 
     def test_21_connect_roadmC_PP2_to_xpdrC_N2(self):
-        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(self.restconf_baseurl)
+        url = "{}/operations/transportpce-networkutils:init-rdm-xpdr-links".format(test_utils.RESTCONF_BASE_URL)
         data = {
             "networkutils:input": {
                 "networkutils:links-input": {
@@ -613,10 +490,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
         }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
             "POST", url, data=json.dumps(data),
-            headers=headers, auth=('admin', 'admin'))
+            headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Roadm Xponder links created successfully', res["output"]["result"])
@@ -624,7 +500,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_22_create_eth_service2(self):
         url = ("{}/operations/org-openroadm-service:service-create"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -713,11 +589,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "operator-contact": "pw1234"
                 }
                 }
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('PCE calculation in progress',
@@ -726,11 +600,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_23_get_eth_service2(self):
         url = ("{}/operational/org-openroadm-service:service-list/services/service2"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertEqual(
@@ -748,10 +620,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/DEG2-TTP-TXRX-SRG1-PP2-TXRX-2"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -771,9 +642,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_25_check_topo_XPDRA(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/XPDR-A1-XPDR1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         liste_tp = res['node'][0]['ietf-network-topology:termination-point']
@@ -792,9 +663,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_26_check_topo_ROADMA_SRG1(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-SRG1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertNotIn({u'index': 1}, res['node'][0]
@@ -822,9 +693,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_27_check_topo_ROADMA_DEG2(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-DEG2"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertNotIn({u'index': 1}, res['node'][0]
@@ -850,7 +721,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 #     creation service test on a non-available resource
     def test_28_create_eth_service3(self):
         url = ("{}/operations/org-openroadm-service:service-create"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -939,11 +810,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "operator-contact": "pw1234"
                 }
                 }
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('PCE calculation in progress',
@@ -954,7 +823,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 # add a test that check the openroadm-service-list still only contains 2 elements
     def test_29_delete_eth_service3(self):
         url = ("{}/operations/org-openroadm-service:service-delete"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -968,10 +837,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
                 }
                 }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Service \'service3\' does not exist in datastore',
@@ -981,7 +849,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_30_delete_eth_service1(self):
         url = ("{}/operations/org-openroadm-service:service-delete"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -995,10 +863,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
                 }
                 }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Renderer service delete in progress',
@@ -1007,7 +874,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_31_delete_eth_service2(self):
         url = ("{}/operations/org-openroadm-service:service-delete"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1021,10 +888,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
                 }
                 }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Renderer service delete in progress',
@@ -1034,9 +900,9 @@ class TransportPCEFulltesting(unittest.TestCase):
     def test_32_check_no_xc_ROADMA(self):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, auth=('admin', 'admin'))
+            "GET", url, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         res = response.json()
         self.assertEqual(response.status_code, requests.codes.ok)
         self.assertNotIn('roadm-connections', dict.keys(res['org-openroadm-device']))
@@ -1044,9 +910,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_33_check_topo_XPDRA(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/XPDR-A1-XPDR1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         liste_tp = res['node'][0]['ietf-network-topology:termination-point']
@@ -1062,9 +928,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_34_check_topo_ROADMA_SRG1(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-SRG1"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn({u'index': 1}, res['node'][0]
@@ -1081,9 +947,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_35_check_topo_ROADMA_DEG2(self):
         url1 = ("{}/config/ietf-network:networks/network/openroadm-topology/node/ROADM-A1-DEG2"
-                .format(self.restconf_baseurl))
+                .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url1, auth=('admin', 'admin'))
+            "GET", url1, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn({u'index': 1}, res['node'][0]
@@ -1101,7 +967,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 # test service-create for Optical Channel (OC) service from srg-pp to srg-pp
     def test_36_create_oc_service1(self):
         url = ("{}/operations/org-openroadm-service:service-create"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1190,11 +1056,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "operator-contact": "pw1234"
                 }
                 }
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('PCE calculation in progress',
@@ -1203,11 +1067,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_37_get_oc_service1(self):
         url = ("{}/operational/org-openroadm-service:service-list/services/service1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertEqual(
@@ -1225,10 +1087,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/SRG1-PP1-TXRX-DEG2-TTP-TXRX-1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -1252,10 +1113,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-C1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/SRG1-PP1-TXRX-DEG1-TTP-TXRX-1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -1277,7 +1137,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_40_create_oc_service2(self):
         url = ("{}/operations/org-openroadm-service:service-create"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1366,11 +1226,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 "operator-contact": "pw1234"
                 }
                 }
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('PCE calculation in progress',
@@ -1379,11 +1237,9 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_41_get_oc_service2(self):
         url = ("{}/operational/org-openroadm-service:service-list/services/service2"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertEqual(
@@ -1401,10 +1257,9 @@ class TransportPCEFulltesting(unittest.TestCase):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf/"
                "node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
                "roadm-connections/SRG1-PP2-TXRX-DEG2-TTP-TXRX-2"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         # the following statement replaces self.assertDictContainsSubset deprecated in python 3.2
@@ -1431,7 +1286,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_44_delete_oc_service1(self):
         url = ("{}/operations/org-openroadm-service:service-delete"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1445,10 +1300,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
                 }
                 }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Renderer service delete in progress',
@@ -1457,7 +1311,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_45_delete_oc_service2(self):
         url = ("{}/operations/org-openroadm-service:service-delete"
-               .format(self.restconf_baseurl))
+               .format(test_utils.RESTCONF_BASE_URL))
         data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1471,10 +1325,9 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
                 }
                 }
-        headers = {'content-type': 'application/json'}
         response = requests.request(
-            "POST", url, data=json.dumps(data), headers=headers,
-            auth=('admin', 'admin'))
+            "POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+            auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertIn('Renderer service delete in progress',
@@ -1484,11 +1337,9 @@ class TransportPCEFulltesting(unittest.TestCase):
     def test_46_get_no_oc_services(self):
         print("start test")
         url = ("{}/operational/org-openroadm-service:service-list"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.not_found)
         res = response.json()
         self.assertIn(
@@ -1500,11 +1351,9 @@ class TransportPCEFulltesting(unittest.TestCase):
     def test_47_get_no_xc_ROADMA(self):
         url = ("{}/config/network-topology:network-topology/topology/topology-netconf"
                "/node/ROADM-A1/yang-ext:mount/org-openroadm-device:org-openroadm-device/"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json',
-                   "Accept": "application/json"}
+               .format(test_utils.RESTCONF_BASE_URL))
         response = requests.request(
-            "GET", url, headers=headers, auth=('admin', 'admin'))
+            "GET", url, headers=test_utils.TYPE_APPLICATION_JSON, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         self.assertEqual(response.status_code, requests.codes.ok)
         res = response.json()
         self.assertNotIn(['roadm-connections'][0], res['org-openroadm-device'])
@@ -1516,7 +1365,7 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_49_loop_create_eth_service(self):
         for i in range(1, 6):
-            print("trial number {}".format(i))
+            print("iteration number {}".format(i))
             print("eth service creation")
             self.test_11_create_eth_service1()
             print("check xc in ROADM-A1")
@@ -1528,11 +1377,11 @@ class TransportPCEFulltesting(unittest.TestCase):
 
     def test_50_loop_create_oc_service(self):
         url = ("{}/operational/org-openroadm-service:service-list/services/service1"
-               .format(self.restconf_baseurl))
-        response = requests.request("GET", url, auth=('admin', 'admin'))
+               .format(test_utils.RESTCONF_BASE_URL))
+        response = requests.request("GET", url, auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
         if response.status_code != 404:
             url = ("{}/operations/org-openroadm-service:service-delete"
-                   .format(self.restconf_baseurl))
+                   .format(test_utils.RESTCONF_BASE_URL))
             data = {"input": {
                 "sdnc-request-header": {
                     "request-id": "e3028bae-a90f-4ddd-a83f-cf224eba0e58",
@@ -1546,12 +1395,12 @@ class TransportPCEFulltesting(unittest.TestCase):
                 }
             }
             }
-            headers = {'content-type': 'application/json'}
-            requests.request("POST", url, data=json.dumps(data), headers=headers, auth=('admin', 'admin'))
+            requests.request("POST", url, data=json.dumps(data), headers=test_utils.TYPE_APPLICATION_JSON,
+                             auth=(test_utils.ODL_LOGIN, test_utils.ODL_PWD))
             time.sleep(5)
 
         for i in range(1, 6):
-            print("trial number {}".format(i))
+            print("iteration number {}".format(i))
             print("oc service creation")
             self.test_36_create_oc_service1()
             print("check xc in ROADM-A1")
@@ -1562,48 +1411,20 @@ class TransportPCEFulltesting(unittest.TestCase):
             self.test_44_delete_oc_service1()
 
     def test_51_disconnect_XPDRA(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/XPDR-A1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "DELETE", url, headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.ok)
-        time.sleep(10)
+        response = test_utils.unmount_device("XPDR-A1")
+        self.assertEqual(response.status_code, requests.codes.ok, test_utils.CODE_SHOULD_BE_200)
 
     def test_52_disconnect_XPDRC(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/XPDR-C1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "DELETE", url, headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.ok)
-        time.sleep(10)
+        response = test_utils.unmount_device("XPDR-C1")
+        self.assertEqual(response.status_code, requests.codes.ok, test_utils.CODE_SHOULD_BE_200)
 
     def test_53_disconnect_ROADMA(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/ROADM-A1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "DELETE", url, headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.ok)
-        time.sleep(10)
+        response = test_utils.unmount_device("ROADM-A1")
+        self.assertEqual(response.status_code, requests.codes.ok, test_utils.CODE_SHOULD_BE_200)
 
     def test_54_disconnect_ROADMC(self):
-        url = ("{}/config/network-topology:"
-               "network-topology/topology/topology-netconf/node/ROADM-C1"
-               .format(self.restconf_baseurl))
-        headers = {'content-type': 'application/json'}
-        response = requests.request(
-            "DELETE", url, headers=headers,
-            auth=('admin', 'admin'))
-        self.assertEqual(response.status_code, requests.codes.ok)
-        time.sleep(10)
+        response = test_utils.unmount_device("ROADM-C1")
+        self.assertEqual(response.status_code, requests.codes.ok, test_utils.CODE_SHOULD_BE_200)
 
 
 if __name__ == "__main__":