diff --git a/neutron_tempest_plugin/api/admin/test_extension_driver_port_security_admin.py b/neutron_tempest_plugin/api/admin/test_extension_driver_port_security_admin.py
index d449ead..048a1e5 100644
--- a/neutron_tempest_plugin/api/admin/test_extension_driver_port_security_admin.py
+++ b/neutron_tempest_plugin/api/admin/test_extension_driver_port_security_admin.py
@@ -17,11 +17,9 @@
 from tempest.lib import exceptions as lib_exc
 
 from neutron_tempest_plugin.api import base
-from neutron_tempest_plugin.api import base_security_groups as base_security
 
 
-class PortSecurityAdminTests(base_security.BaseSecGroupTest,
-                             base.BaseAdminNetworkTest):
+class PortSecurityAdminTests(base.BaseAdminNetworkTest):
 
     required_extensions = ['port-security']
 
diff --git a/neutron_tempest_plugin/api/admin/test_quotas_negative.py b/neutron_tempest_plugin/api/admin/test_quotas_negative.py
index cd64e5c..9c37d92 100644
--- a/neutron_tempest_plugin/api/admin/test_quotas_negative.py
+++ b/neutron_tempest_plugin/api/admin/test_quotas_negative.py
@@ -10,6 +10,7 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from neutron_lib import constants
 from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
@@ -110,54 +111,38 @@
     @decorators.idempotent_id('5c924ff7-b7a9-474f-92a3-dbe0f976ec13')
     @utils.requires_ext(extension="security-group", service="network")
     def test_create_security_group_when_quotas_is_full(self):
-        tenant_id = self.create_project()['id']
-        sg_args = {'tenant_id': tenant_id}
-        # avoid a number that is made by default
-        sg_list = self.admin_client.list_security_groups(
-            tenant_id=tenant_id)['security_groups']
-        num = len(sg_list) + 1
+        project = self.create_project()
 
-        new_quotas = {'security_group': num}
-        self._setup_quotas(tenant_id, **new_quotas)
+        # Set quotas to allow to create only one more security group
+        security_groups = self.admin_client.list_security_groups(
+            tenant_id=project['id'])['security_groups']
+        self._setup_quotas(project['id'],
+                           security_group=len(security_groups) + 1)
 
-        sg = self.admin_client.create_security_group(
-            **sg_args)['security_group']
-        self.addCleanup(self.admin_client.delete_security_group, sg['id'])
-
-        self.assertRaises(lib_exc.Conflict,
-                          self.admin_client.create_security_group, **sg_args)
+        self.create_security_group(project=project)
+        self.assertRaises(lib_exc.Conflict, self.create_security_group,
+                          project=project)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('b7143480-6118-4ed4-be38-1b6f15f30d05')
     @utils.requires_ext(extension="security-group", service="network")
     def test_create_security_group_rule_when_quotas_is_full(self):
-        tenant_id = self.create_project()['id']
-        sg_args = {'tenant_id': tenant_id}
+        project = self.create_project()
+        security_group = self.create_security_group(project=project)
 
-        sg = self.admin_client.create_security_group(
-            **sg_args)['security_group']
-        self.addCleanup(self.admin_client.delete_security_group, sg['id'])
+        # Set quotas to allow to create only one more security group rule
+        security_group_rules = self.admin_client.list_security_group_rules(
+            tenant_id=project['id'])['security_group_rules']
+        self._setup_quotas(project['id'],
+                           security_group_rule=len(security_group_rules) + 1)
 
-        # avoid a number that is made by default
-        sg_rule_list = self.admin_client.list_security_group_rules(
-            tenant_id=tenant_id)['security_group_rules']
-        num = len(sg_rule_list) + 1
-
-        new_quotas = {'security_group_rule': num}
-        self._setup_quotas(tenant_id, **new_quotas)
-
-        sg_rule_args = {'tenant_id': tenant_id,
-                        'security_group_id': sg['id'],
-                        'direction': 'ingress'}
-        sg_rule = self.admin_client.create_security_group_rule(
-            **sg_rule_args)['security_group_rule']
-        self.addCleanup(
-            self.admin_client.delete_security_group_rule, sg_rule['id'])
-
-        sg_rule_args['direction'] = 'egress'
+        self.create_security_group_rule(
+            project=project, security_group=security_group,
+            direction=constants.INGRESS_DIRECTION)
         self.assertRaises(lib_exc.Conflict,
-                          self.admin_client.create_security_group_rule,
-                          **sg_rule_args)
+                          self.create_security_group_rule,
+                          project=project, security_group=security_group,
+                          direction=constants.EGRESS_DIRECTION)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('d00fe5bb-9db8-4e1a-9c31-490f52897e6f')
diff --git a/neutron_tempest_plugin/api/admin/test_security_groups.py b/neutron_tempest_plugin/api/admin/test_security_groups.py
index de7e7d2..d79b0ee 100644
--- a/neutron_tempest_plugin/api/admin/test_security_groups.py
+++ b/neutron_tempest_plugin/api/admin/test_security_groups.py
@@ -14,10 +14,10 @@
 
 from tempest.lib import decorators
 
-from neutron_tempest_plugin.api import base_security_groups as base
+from neutron_tempest_plugin.api import base
 
 
-class SecGroupAdminTest(base.BaseSecGroupTest):
+class SecGroupAdminTest(base.BaseNetworkTest):
     required_extensions = ['security-group']
     credentials = ['primary', 'admin']
 
diff --git a/neutron_tempest_plugin/api/base_security_groups.py b/neutron_tempest_plugin/api/base_security_groups.py
index 127bbd9..ca2c17a 100644
--- a/neutron_tempest_plugin/api/base_security_groups.py
+++ b/neutron_tempest_plugin/api/base_security_groups.py
@@ -14,9 +14,6 @@
 #    under the License.
 
 from neutron_lib import constants
-from tempest.lib.common.utils import data_utils
-
-from neutron_tempest_plugin.api import base
 
 
 # NOTE(yamamoto): The list of protocols here is what we had in Ocata.
@@ -45,9 +42,13 @@
     'udplite',
     'vrrp',
 }
-V4_PROTOCOL_INTS = set(v for k, v in constants.IP_PROTOCOL_MAP.items() if
-                       k in V4_PROTOCOL_NAMES)
-V6_PROTOCOL_LEGACY = set([constants.PROTO_NAME_IPV6_ICMP_LEGACY])
+
+V4_PROTOCOL_INTS = {v
+                    for k, v in constants.IP_PROTOCOL_MAP.items()
+                    if k in V4_PROTOCOL_NAMES}
+
+V6_PROTOCOL_LEGACY = {constants.PROTO_NAME_IPV6_ICMP_LEGACY}
+
 V6_PROTOCOL_NAMES = {
     'ipv6-encap',
     'ipv6-frag',
@@ -56,66 +57,7 @@
     'ipv6-opts',
     'ipv6-route',
 }
-V6_PROTOCOL_INTS = set(v for k, v in constants.IP_PROTOCOL_MAP.items() if
-                       k in (V6_PROTOCOL_NAMES | V6_PROTOCOL_LEGACY))
 
-
-class BaseSecGroupTest(base.BaseNetworkTest):
-
-    def _create_security_group(self, **kwargs):
-        # Create a security group
-        name = data_utils.rand_name('secgroup-')
-        group_create_body = self.client.create_security_group(name=name,
-                                                              **kwargs)
-        self.addCleanup(self._delete_security_group,
-                        group_create_body['security_group']['id'])
-        self.assertEqual(group_create_body['security_group']['name'], name)
-        return group_create_body, name
-
-    def _delete_security_group(self, secgroup_id):
-        self.client.delete_security_group(secgroup_id)
-        # Asserting that the security group is not found in the list
-        # after deletion
-        list_body = self.client.list_security_groups()
-        secgroup_list = list()
-        for secgroup in list_body['security_groups']:
-            secgroup_list.append(secgroup['id'])
-        self.assertNotIn(secgroup_id, secgroup_list)
-
-    def _create_security_group_rule(self, **kwargs):
-        rule_create_body = self.client.create_security_group_rule(**kwargs)
-        # List rules and verify created rule is in response
-        rule_list_body = (
-            self.client.list_security_group_rules())
-        rule_list = [rule['id']
-                     for rule in rule_list_body['security_group_rules']]
-        self.assertIn(rule_create_body['security_group_rule']['id'],
-                      rule_list)
-        self.addCleanup(self._delete_security_group_rule,
-                        rule_create_body['security_group_rule']['id'])
-        return rule_create_body
-
-    def _show_security_group_rule(self, **kwargs):
-        show_rule_body = self.client.show_security_group_rule(kwargs['id'])
-        for key, value in kwargs.items():
-            self.assertEqual(value,
-                             show_rule_body['security_group_rule'][key],
-                             "%s does not match." % key)
-
-    def _delete_security_group_rule(self, secgroup_rule_id):
-        self.client.delete_security_group_rule(secgroup_rule_id)
-        rule_list_body = self.client.list_security_group_rules()
-        rule_list = [rule['id']
-                     for rule in rule_list_body['security_group_rules']]
-        self.assertNotIn(secgroup_rule_id, rule_list)
-
-    def _test_create_show_delete_security_group_rule(self, **kwargs):
-        # The security group rule is deleted by the cleanup call in
-        # _create_security_group_rule.
-        rule_create_body = (
-            self._create_security_group_rule(**kwargs)['security_group_rule'])
-        self._show_security_group_rule(
-            id=rule_create_body['id'],
-            protocol=rule_create_body['protocol'],
-            direction=rule_create_body['direction'],
-            ethertype=rule_create_body['ethertype'])
+V6_PROTOCOL_INTS = {v
+                    for k, v in constants.IP_PROTOCOL_MAP.items()
+                    if k in (V6_PROTOCOL_NAMES | V6_PROTOCOL_LEGACY)}
diff --git a/neutron_tempest_plugin/api/test_extension_driver_port_security.py b/neutron_tempest_plugin/api/test_extension_driver_port_security.py
index 8a8c4f2..6b05557 100644
--- a/neutron_tempest_plugin/api/test_extension_driver_port_security.py
+++ b/neutron_tempest_plugin/api/test_extension_driver_port_security.py
@@ -19,15 +19,13 @@
 from tempest.lib import exceptions as lib_exc
 
 from neutron_tempest_plugin.api import base
-from neutron_tempest_plugin.api import base_security_groups as base_security
 
 FAKE_IP = '10.0.0.1'
 FAKE_MAC = '00:25:64:e8:19:dd'
 
 
 @ddt.ddt
-class PortSecTest(base_security.BaseSecGroupTest,
-                  base.BaseNetworkTest):
+class PortSecTest(base.BaseNetworkTest):
 
     @decorators.idempotent_id('7c338ddf-e64e-4118-bd33-e49a1f2f1495')
     @utils.requires_ext(extension='port-security', service='network')
@@ -76,7 +74,7 @@
         network = self.create_network()
         self.create_subnet(network)
 
-        sec_group_body, _ = self._create_security_group()
+        security_group = self.create_security_group()
         port = self.create_port(network)
 
         # Exception when set port-sec to False with sec-group defined
@@ -88,7 +86,7 @@
         self.assertEmpty(port['security_groups'])
         self.assertFalse(port['port_security_enabled'])
         port = self.update_port(
-            port, security_groups=[sec_group_body['security_group']['id']],
+            port, security_groups=[security_group['id']],
             port_security_enabled=True)
 
         self.assertNotEmpty(port['security_groups'])
@@ -102,11 +100,11 @@
     def test_port_sec_update_pass(self):
         network = self.create_network()
         self.create_subnet(network)
-        sec_group, _ = self._create_security_group()
-        sec_group_id = sec_group['security_group']['id']
-        port = self.create_port(network, security_groups=[sec_group_id],
-                                port_security_enabled=True)
+        security_group = self.create_security_group()
 
+        port = self.create_port(network,
+                                security_groups=[security_group['id']],
+                                port_security_enabled=True)
         self.assertNotEmpty(port['security_groups'])
         self.assertTrue(port['port_security_enabled'])
 
@@ -114,7 +112,7 @@
         self.assertEmpty(port['security_groups'])
         self.assertTrue(port['port_security_enabled'])
 
-        port = self.update_port(port, security_groups=[sec_group_id])
+        port = self.update_port(port, security_groups=[security_group['id']])
         self.assertNotEmpty(port['security_groups'])
         port = self.update_port(port, security_groups=[],
                                 port_security_enabled=False)
diff --git a/neutron_tempest_plugin/api/test_revisions.py b/neutron_tempest_plugin/api/test_revisions.py
index b03285d..0d590f6 100644
--- a/neutron_tempest_plugin/api/test_revisions.py
+++ b/neutron_tempest_plugin/api/test_revisions.py
@@ -12,16 +12,16 @@
 
 import netaddr
 
+from neutron_lib import constants
 from tempest.common import utils
 from tempest.lib import decorators
 from tempest.lib import exceptions
 
 from neutron_tempest_plugin.api import base
-from neutron_tempest_plugin.api import base_security_groups as bsg
 from neutron_tempest_plugin import config
 
 
-class TestRevisions(base.BaseAdminNetworkTest, bsg.BaseSecGroupTest):
+class TestRevisions(base.BaseAdminNetworkTest):
 
     required_extensions = ['standard-attr-revisions']
 
@@ -111,46 +111,51 @@
     @decorators.idempotent_id('6c256f71-c929-4200-b3dc-4e1843506be5')
     @utils.requires_ext(extension="security-group", service="network")
     def test_update_sg_group_bumps_revision(self):
-        sg, name = self._create_security_group()
-        self.assertIn('revision_number', sg['security_group'])
-        update_body = self.client.update_security_group(
-            sg['security_group']['id'], name='new_sg_name')
-        self.assertGreater(update_body['security_group']['revision_number'],
-                           sg['security_group']['revision_number'])
+        security_group = self.create_security_group()
+        self.assertIn('revision_number', security_group)
+        updated_security_group = self.client.update_security_group(
+            security_group['id'], name='new_sg_name')['security_group']
+        self.assertGreater(updated_security_group['revision_number'],
+                           security_group['revision_number'])
 
     @decorators.idempotent_id('6489632f-8550-4453-a674-c98849742967')
     @utils.requires_ext(extension="security-group", service="network")
     def test_update_port_sg_binding_bumps_revision(self):
-        net = self.create_network()
-        self.addCleanup(self.client.delete_network, net['id'])
-        port = self.create_port(net)
-        self.addCleanup(self.client.delete_port, port['id'])
-        sg = self._create_security_group()[0]
-        self.client.update_port(
-            port['id'], security_groups=[sg['security_group']['id']])
-        updated = self.client.show_port(port['id'])
-        updated2 = self.client.update_port(port['id'], security_groups=[])
-        self.assertGreater(updated['port']['revision_number'],
+        network = self.create_network()
+        port = self.create_port(network)
+
+        security_group = self.create_security_group()
+        updated_port = self.client.update_port(
+            port['id'], security_groups=[security_group['id']])['port']
+        self.assertGreater(updated_port['revision_number'],
                            port['revision_number'])
-        self.assertGreater(updated2['port']['revision_number'],
-                           updated['port']['revision_number'])
+
+        updated_port2 = self.client.update_port(
+            port['id'], security_groups=[])['port']
+        self.assertGreater(updated_port2['revision_number'],
+                           updated_port['revision_number'])
 
     @decorators.idempotent_id('29c7ab2b-d1d8-425d-8cec-fcf632960f22')
     @utils.requires_ext(extension="security-group", service="network")
     def test_update_sg_rule_bumps_sg_revision(self):
-        sg, name = self._create_security_group()
-        rule = self.client.create_security_group_rule(
-            security_group_id=sg['security_group']['id'],
-            protocol='tcp', direction='ingress', ethertype=self.ethertype,
-            port_range_min=60, port_range_max=70)
-        updated = self.client.show_security_group(sg['security_group']['id'])
-        self.assertGreater(updated['security_group']['revision_number'],
-                           sg['security_group']['revision_number'])
-        self.client.delete_security_group_rule(
-            rule['security_group_rule']['id'])
-        updated2 = self.client.show_security_group(sg['security_group']['id'])
-        self.assertGreater(updated2['security_group']['revision_number'],
-                           updated['security_group']['revision_number'])
+        security_group = self.create_security_group()
+
+        security_group_rule = self.create_security_group_rule(
+            security_group=security_group,
+            protocol=constants.PROTO_NAME_TCP,
+            direction=constants.INGRESS_DIRECTION,
+            port_range_min=60,
+            port_range_max=70)
+        updated_security_group = self.client.show_security_group(
+            security_group['id'])['security_group']
+        self.assertGreater(updated_security_group['revision_number'],
+                           security_group['revision_number'])
+
+        self.client.delete_security_group_rule(security_group_rule['id'])
+        updated_security_group2 = self.client.show_security_group(
+            security_group['id'])['security_group']
+        self.assertGreater(updated_security_group2['revision_number'],
+                           updated_security_group['revision_number'])
 
     @decorators.idempotent_id('db70c285-0365-4fac-9f55-2a0ad8cf55a8')
     @utils.requires_ext(extension="allowed-address-pairs", service="network")
diff --git a/neutron_tempest_plugin/api/test_security_groups.py b/neutron_tempest_plugin/api/test_security_groups.py
index 299a62e..b6d344d 100644
--- a/neutron_tempest_plugin/api/test_security_groups.py
+++ b/neutron_tempest_plugin/api/test_security_groups.py
@@ -17,39 +17,40 @@
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
-from neutron_tempest_plugin.api import base_security_groups as base
+from neutron_tempest_plugin.api import base
+from neutron_tempest_plugin.api import base_security_groups
 
 
-class SecGroupTest(base.BaseSecGroupTest):
+class SecGroupTest(base.BaseNetworkTest):
 
     required_extensions = ['security-group']
 
     @decorators.idempotent_id('bfd128e5-3c92-44b6-9d66-7fe29d22c802')
     def test_create_list_update_show_delete_security_group(self):
-        group_create_body, name = self._create_security_group()
+        security_group = self.create_security_group()
 
         # List security groups and verify if created group is there in response
-        list_body = self.client.list_security_groups()
-        secgroup_list = list()
-        for secgroup in list_body['security_groups']:
-            secgroup_list.append(secgroup['id'])
-        self.assertIn(group_create_body['security_group']['id'], secgroup_list)
+        security_groups = self.client.list_security_groups()['security_groups']
+        self.assertIn(security_group['id'],
+                      {sg['id'] for sg in security_groups})
+
         # Update the security group
         new_name = data_utils.rand_name('security')
         new_description = data_utils.rand_name('security-description')
-        update_body = self.client.update_security_group(
-            group_create_body['security_group']['id'],
-            name=new_name,
-            description=new_description)
+        updated_security_group = self.client.update_security_group(
+            security_group['id'], name=new_name,
+            description=new_description)['security_group']
+
         # Verify if security group is updated
-        self.assertEqual(update_body['security_group']['name'], new_name)
-        self.assertEqual(update_body['security_group']['description'],
+        self.assertEqual(updated_security_group['name'], new_name)
+        self.assertEqual(updated_security_group['description'],
                          new_description)
+
         # Show details of the updated security group
-        show_body = self.client.show_security_group(
-            group_create_body['security_group']['id'])
-        self.assertEqual(show_body['security_group']['name'], new_name)
-        self.assertEqual(show_body['security_group']['description'],
+        observed_security_group = self.client.show_security_group(
+            security_group['id'])['security_group']
+        self.assertEqual(observed_security_group['name'], new_name)
+        self.assertEqual(observed_security_group['description'],
                          new_description)
 
     @decorators.idempotent_id('7c0ecb10-b2db-11e6-9b14-000c29248b0d')
@@ -67,58 +68,48 @@
             self.assertIsNotNone(secgrp['id'])
 
 
-class SecGroupProtocolTest(base.BaseSecGroupTest):
+class SecGroupProtocolTest(base.BaseNetworkTest):
+
+    protocol_names = base_security_groups.V4_PROTOCOL_NAMES
+    protocol_ints = base_security_groups.V4_PROTOCOL_INTS
 
     @decorators.idempotent_id('282e3681-aa6e-42a7-b05c-c341aa1e3cdf')
-    def test_create_show_delete_security_group_rule_names(self):
-        group_create_body, _ = self._create_security_group()
-        for protocol in base.V4_PROTOCOL_NAMES:
-            self._test_create_show_delete_security_group_rule(
-                security_group_id=group_create_body['security_group']['id'],
-                protocol=protocol,
+    def test_security_group_rule_protocol_names(self):
+        self._test_security_group_rule_protocols(protocols=self.protocol_names)
+
+    @decorators.idempotent_id('66e47f1f-20b6-4417-8839-3cc671c7afa3')
+    def test_security_group_rule_protocol_ints(self):
+        self._test_security_group_rule_protocols(protocols=self.protocol_ints)
+
+    def _test_security_group_rule_protocols(self, protocols):
+        security_group = self.create_security_group()
+        for protocol in protocols:
+            self._test_security_group_rule(
+                security_group=security_group,
+                protocol=str(protocol),
                 direction=constants.INGRESS_DIRECTION,
                 ethertype=self.ethertype)
 
-    @decorators.idempotent_id('66e47f1f-20b6-4417-8839-3cc671c7afa3')
-    def test_create_show_delete_security_group_rule_integers(self):
-        group_create_body, _ = self._create_security_group()
-        for protocol in base.V4_PROTOCOL_INTS:
-            self._test_create_show_delete_security_group_rule(
-                security_group_id=group_create_body['security_group']['id'],
-                protocol=protocol,
-                direction=constants.INGRESS_DIRECTION,
-                ethertype=self.ethertype)
+    def _test_security_group_rule(self, security_group, **kwargs):
+        security_group_rule = self.create_security_group_rule(
+            security_group=security_group, **kwargs)
+        observed_security_group_rule = self.client.show_security_group_rule(
+            security_group_rule['id'])['security_group_rule']
+        for key, value in kwargs.items():
+            self.assertEqual(value, security_group_rule[key],
+                             "{!r} does not match.".format(key))
+            self.assertEqual(value, observed_security_group_rule[key],
+                             "{!r} does not match.".format(key))
 
 
 class SecGroupProtocolIPv6Test(SecGroupProtocolTest):
-    _ip_version = constants.IP_VERSION_6
 
-    @decorators.idempotent_id('1f7cc9f5-e0d5-487c-8384-3d74060ab530')
-    def test_create_security_group_rule_with_ipv6_protocol_names(self):
-        group_create_body, _ = self._create_security_group()
-        for protocol in base.V6_PROTOCOL_NAMES:
-            self._test_create_show_delete_security_group_rule(
-                security_group_id=group_create_body['security_group']['id'],
-                protocol=protocol,
-                direction=constants.INGRESS_DIRECTION,
-                ethertype=self.ethertype)
+    _ip_version = constants.IP_VERSION_6
+    protocol_names = base_security_groups.V6_PROTOCOL_NAMES
+    protocol_ints = base_security_groups.V6_PROTOCOL_INTS
+    protocol_legacy_names = base_security_groups.V6_PROTOCOL_LEGACY
 
     @decorators.idempotent_id('c7d17b41-3b4e-4add-bb3b-6af59baaaffa')
-    def test_create_security_group_rule_with_ipv6_protocol_legacy_names(self):
-        group_create_body, _ = self._create_security_group()
-        for protocol in base.V6_PROTOCOL_LEGACY:
-            self._test_create_show_delete_security_group_rule(
-                security_group_id=group_create_body['security_group']['id'],
-                protocol=protocol,
-                direction=constants.INGRESS_DIRECTION,
-                ethertype=self.ethertype)
-
-    @decorators.idempotent_id('bcfce0b7-bc96-40ae-9b08-3f6774ee0260')
-    def test_create_security_group_rule_with_ipv6_protocol_integers(self):
-        group_create_body, _ = self._create_security_group()
-        for protocol in base.V6_PROTOCOL_INTS:
-            self._test_create_show_delete_security_group_rule(
-                security_group_id=group_create_body['security_group']['id'],
-                protocol=protocol,
-                direction=constants.INGRESS_DIRECTION,
-                ethertype=self.ethertype)
+    def test_security_group_rule_protocol_legacy_names(self):
+        self._test_security_group_rule_protocols(
+            protocols=self.protocol_legacy_names)
diff --git a/neutron_tempest_plugin/api/test_security_groups_negative.py b/neutron_tempest_plugin/api/test_security_groups_negative.py
index c427691..1fcbd18 100644
--- a/neutron_tempest_plugin/api/test_security_groups_negative.py
+++ b/neutron_tempest_plugin/api/test_security_groups_negative.py
@@ -18,12 +18,14 @@
 from tempest.lib import decorators
 from tempest.lib import exceptions as lib_exc
 
-from neutron_tempest_plugin.api import base_security_groups as base
+from neutron_tempest_plugin.api import base
+from neutron_tempest_plugin.api import base_security_groups
+
 
 LONG_NAME_NG = 'x' * (db_const.NAME_FIELD_SIZE + 1)
 
 
-class NegativeSecGroupTest(base.BaseSecGroupTest):
+class NegativeSecGroupTest(base.BaseNetworkTest):
 
     required_extensions = ['security-group']
 
@@ -36,72 +38,68 @@
     @decorators.idempotent_id('594edfa8-9a5b-438e-9344-49aece337d49')
     def test_create_security_group_with_too_long_name(self):
         self.assertRaises(lib_exc.BadRequest,
-                          self.client.create_security_group,
+                          self.create_security_group,
                           name=LONG_NAME_NG)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('b6b79838-7430-4d3f-8e07-51dfb61802c2')
     def test_create_security_group_with_boolean_type_name(self):
         self.assertRaises(lib_exc.BadRequest,
-                          self.client.create_security_group,
+                          self.create_security_group,
                           name=True)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('55100aa8-b24f-333c-0bef-64eefd85f15c')
     def test_update_default_security_group_name(self):
-        sg_list = self.client.list_security_groups(name='default')
-        sg = sg_list['security_groups'][0]
+        security_group = self.client.list_security_groups(name='default')[
+            'security_groups'][0]
         self.assertRaises(lib_exc.Conflict, self.client.update_security_group,
-                          sg['id'], name='test')
+                          security_group['id'], name='test')
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('c8510dd8-c3a8-4df9-ae44-24354db50960')
     def test_update_security_group_with_too_long_name(self):
-        sg_list = self.client.list_security_groups(name='default')
-        sg = sg_list['security_groups'][0]
+        security_group = self.client.list_security_groups(name='default')[
+            'security_groups'][0]
         self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
-                          sg['id'], name=LONG_NAME_NG)
+                          security_group['id'], name=LONG_NAME_NG)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('d9a14917-f66f-4eca-ab72-018563917f1b')
     def test_update_security_group_with_boolean_type_name(self):
-        sg_list = self.client.list_security_groups(name='default')
-        sg = sg_list['security_groups'][0]
+        security_group = self.client.list_security_groups(name='default')[
+            'security_groups'][0]
         self.assertRaises(lib_exc.BadRequest,
                           self.client.update_security_group,
-                          sg['id'], name=True)
+                          security_group['id'], name=True)
 
     @decorators.attr(type='negative')
     @decorators.idempotent_id('3200b1a8-d73b-48e9-b03f-e891a4abe2d3')
     def test_delete_in_use_sec_group(self):
-        sgroup = self.os_primary.network_client.create_security_group(
-            name='sgroup')
-        self.security_groups.append(sgroup['security_group'])
-        port = self.client.create_port(
-            network_id=self.network['id'],
-            security_groups=[sgroup['security_group']['id']])
-        self.ports.append(port['port'])
+        security_group = self.create_security_group()
+        self.create_port(network=self.network,
+                         security_groups=[security_group['id']])
         self.assertRaises(lib_exc.Conflict,
                           self.os_primary.network_client.delete_security_group,
-                          security_group_id=sgroup['security_group']['id'])
+                          security_group_id=security_group['id'])
 
 
 class NegativeSecGroupIPv6Test(NegativeSecGroupTest):
     _ip_version = constants.IP_VERSION_6
 
 
-class NegativeSecGroupProtocolTest(base.BaseSecGroupTest):
+class NegativeSecGroupProtocolTest(base.BaseNetworkTest):
 
     def _test_create_security_group_rule_with_bad_protocols(self, protocols):
-        group_create_body, _ = self._create_security_group()
+        security_group = self.create_security_group()
 
         # bad protocols can include v6 protocols because self.ethertype is v4
         for protocol in protocols:
             self.assertRaises(
                 lib_exc.BadRequest,
                 self.client.create_security_group_rule,
-                security_group_id=group_create_body['security_group']['id'],
+                security_group_id=security_group['id'],
                 protocol=protocol, direction=constants.INGRESS_DIRECTION,
                 ethertype=self.ethertype)
 
@@ -109,10 +107,10 @@
     @decorators.idempotent_id('cccbb0f3-c273-43ed-b3fc-1efc48833810')
     def test_create_security_group_rule_with_ipv6_protocol_names(self):
         self._test_create_security_group_rule_with_bad_protocols(
-            base.V6_PROTOCOL_NAMES)
+            base_security_groups.V6_PROTOCOL_NAMES)
 
     @decorators.attr(type=['negative'])
     @decorators.idempotent_id('8aa636bd-7060-4fdf-b722-cdae28e2f1ef')
     def test_create_security_group_rule_with_ipv6_protocol_integers(self):
         self._test_create_security_group_rule_with_bad_protocols(
-            base.V6_PROTOCOL_INTS)
+            base_security_groups.V6_PROTOCOL_INTS)
diff --git a/neutron_tempest_plugin/api/test_timestamp.py b/neutron_tempest_plugin/api/test_timestamp.py
index f5888f9..9ec982d 100644
--- a/neutron_tempest_plugin/api/test_timestamp.py
+++ b/neutron_tempest_plugin/api/test_timestamp.py
@@ -11,14 +11,15 @@
 #    under the License.
 
 import copy
+import time
 
+from neutron_lib import constants
 from tempest.common import utils
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
 from neutron_tempest_plugin.api import base
 from neutron_tempest_plugin.api import base_routers
-from neutron_tempest_plugin.api import base_security_groups
 from neutron_tempest_plugin import config
 
 CONF = config.CONF
@@ -276,7 +277,7 @@
                          show_fip['updated_at'])
 
 
-class TestTimeStampWithSecurityGroup(base_security_groups.BaseSecGroupTest):
+class TestTimeStampWithSecurityGroup(base.BaseNetworkTest):
 
     required_extensions = ['standard-attr-timestamp']
 
@@ -287,66 +288,66 @@
 
     @decorators.idempotent_id('a3150a7b-d31a-423a-abf3-45e71c97cbac')
     def test_create_sg_with_timestamp(self):
-        sg, _ = self._create_security_group()
+        security_group = self.create_security_group()
         # Verifies body contains timestamp fields
-        self.assertIsNotNone(sg['security_group']['created_at'])
-        self.assertIsNotNone(sg['security_group']['updated_at'])
+        self.assertIsNotNone(security_group['created_at'])
+        self.assertIsNotNone(security_group['updated_at'])
 
     @decorators.idempotent_id('432ae0d3-32b4-413e-a9b3-091ac76da31b')
     def test_update_sg_with_timestamp(self):
-        sgc, _ = self._create_security_group()
-        sg = sgc['security_group']
-        origin_updated_at = sg['updated_at']
-        update_body = {'name': sg['name'] + 'new'}
-        body = self.client.update_security_group(sg['id'], **update_body)
-        updated_sg = body['security_group']
-        new_updated_at = updated_sg['updated_at']
-        self.assertEqual(sg['created_at'], updated_sg['created_at'])
-        # Verify that origin_updated_at is not same with new_updated_at
-        self.assertIsNot(origin_updated_at, new_updated_at)
+        security_group = self.create_security_group()
+
+        # Make sure update time will be different
+        time.sleep(2.)
+        updated_security_group = self.client.update_security_group(
+            security_group['id'], name=security_group['name'] + 'new')[
+                'security_group']
+
+        # Verify that created_at hasn't changed
+        self.assertEqual(security_group['created_at'],
+                         updated_security_group['created_at'])
+        # Verify that updated_at has changed
+        self.assertNotEqual(security_group['updated_at'],
+                            updated_security_group['updated_at'])
 
     @decorators.idempotent_id('521e6723-43d6-12a6-8c3d-f5042ad9fc32')
     def test_show_sg_attribute_with_timestamp(self):
-        sg, _ = self._create_security_group()
-        body = self.client.show_security_group(sg['security_group']['id'])
-        show_sg = body['security_group']
-        # verify the timestamp from creation and showed is same
-        self.assertEqual(sg['security_group']['created_at'],
-                         show_sg['created_at'])
-        self.assertEqual(sg['security_group']['updated_at'],
-                         show_sg['updated_at'])
+        security_group = self.create_security_group()
+        observed_security_group = self.client.show_security_group(
+            security_group['id'])['security_group']
 
-    def _prepare_sgrule_test(self):
-        sg, _ = self._create_security_group()
-        sg_id = sg['security_group']['id']
-        direction = 'ingress'
-        protocol = 'tcp'
-        port_range_min = 77
-        port_range_max = 77
-        rule_create_body = self.client.create_security_group_rule(
-            security_group_id=sg_id,
-            direction=direction,
-            ethertype=self.ethertype,
-            protocol=protocol,
-            port_range_min=port_range_min,
-            port_range_max=port_range_max,
-            remote_group_id=None,
-            remote_ip_prefix=None
-        )
-        return rule_create_body['security_group_rule']
+        # Verify that created_at hasn't changed
+        self.assertEqual(security_group['created_at'],
+                         observed_security_group['created_at'])
+        # Verify that updated_at hasn't changed
+        self.assertEqual(security_group['updated_at'],
+                         observed_security_group['updated_at'])
+
+    def _create_security_group_rule(self):
+        security_group = self.create_security_group()
+        return self.create_security_group_rule(
+            security_group=security_group,
+            direction=constants.INGRESS_DIRECTION,
+            protocol=constants.PROTO_NAME_TCP,
+            port_range_min=77,
+            port_range_max=77)
 
     @decorators.idempotent_id('83e8bd32-43e0-a3f0-1af3-12a5733c653e')
     def test_create_sgrule_with_timestamp(self):
-        sgrule = self._prepare_sgrule_test()
+        security_group_rule = self._create_security_group_rule()
         # Verifies body contains timestamp fields
-        self.assertIsNotNone(sgrule['created_at'])
-        self.assertIsNotNone(sgrule['updated_at'])
+        self.assertIn('created_at', security_group_rule)
+        self.assertIn('updated_at', security_group_rule)
 
     @decorators.idempotent_id('143da0e6-ba17-43ad-b3d7-03aa759c3cb4')
     def test_show_sgrule_attribute_with_timestamp(self):
-        sgrule = self._prepare_sgrule_test()
-        body = self.client.show_security_group_rule(sgrule['id'])
-        show_sgrule = body['security_group_rule']
-        # verify the timestamp from creation and showed is same
-        self.assertEqual(sgrule['created_at'], show_sgrule['created_at'])
-        self.assertEqual(sgrule['updated_at'], show_sgrule['updated_at'])
+        security_group_rule = self._create_security_group_rule()
+
+        observed_security_group_rule = self.client.show_security_group_rule(
+            security_group_rule['id'])['security_group_rule']
+
+        # Verify the time stamp from creation and showed are equal
+        self.assertEqual(security_group_rule['created_at'],
+                         observed_security_group_rule['created_at'])
+        self.assertEqual(security_group_rule['updated_at'],
+                         observed_security_group_rule['updated_at'])
diff --git a/neutron_tempest_plugin/scenario/admin/test_floatingip.py b/neutron_tempest_plugin/scenario/admin/test_floatingip.py
index 1af5502..511452c 100644
--- a/neutron_tempest_plugin/scenario/admin/test_floatingip.py
+++ b/neutron_tempest_plugin/scenario/admin/test_floatingip.py
@@ -14,7 +14,6 @@
 #    under the License.
 from tempest.common import utils
 from tempest.common import waiters
-from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
 
 from neutron_tempest_plugin.common import ssh
@@ -38,22 +37,17 @@
         cls.create_router_interface(router['id'], cls.subnets[0]['id'])
         # Create keypair with admin privileges
         cls.keypair = cls.create_keypair(client=cls.os_admin.keypairs_client)
-        # Create security group with admin privileges
-        cls.secgroup = cls.os_admin.network_client.create_security_group(
-            name=data_utils.rand_name('secgroup'))['security_group']
-        # Execute funcs to achieve ssh and ICMP capabilities
-        funcs = [cls.create_loginable_secgroup_rule,
-                 cls.create_pingable_secgroup_rule]
-        for func in funcs:
-            func(secgroup_id=cls.secgroup['id'],
-                 client=cls.os_admin.network_client)
 
-    @classmethod
-    def resource_cleanup(cls):
-        # Cleanup for security group
-        cls.os_admin.network_client.delete_security_group(
-            security_group_id=cls.secgroup['id'])
-        super(FloatingIpTestCasesAdmin, cls).resource_cleanup()
+        # Create security group with admin privileges
+        network_client = cls.os_admin.network_client
+        cls.secgroup = cls.create_security_group(
+            client=cls.os_admin.network_client)
+        cls.create_loginable_secgroup_rule(
+            secgroup_id=cls.secgroup['id'],
+            client=network_client)
+        cls.create_pingable_secgroup_rule(
+            secgroup_id=cls.secgroup['id'],
+            client=network_client),
 
     def _list_hypervisors(self):
         # List of hypervisors