diff --git a/doc/source/write_tests.rst b/doc/source/write_tests.rst
index 67b55aa..63ff61c 100644
--- a/doc/source/write_tests.rst
+++ b/doc/source/write_tests.rst
@@ -112,6 +112,7 @@
         super(TestExampleCase, cls).resource_setup()
         cls.shared_server = cls.servers_client.create_server(...)
 
+.. _credentials:
 
 Allocating Credentials
 ''''''''''''''''''''''
@@ -241,3 +242,70 @@
 inheriting from classes other than the base TestCase in tempest/test.py it is
 worth checking the immediate parent for what is set to determine if your
 class needs to override that setting.
+
+Interacting with Credentials and Clients
+========================================
+
+Once you have your basic TestCase setup you'll want to start writing tests. To
+do that you need to interact with an OpenStack deployment. This section will
+cover how credentials and clients are used inside of Tempest tests.
+
+
+Manager Objects
+---------------
+
+The primary interface with which you interact with both credentials and
+API clients is the client manager object. These objects are created
+automatically by the base test class as part of credential setup. (for more
+details see the previous :ref:`credentials` section) Each manager object is
+initialized with a set of credentials and has each client object already setup
+to use that set of credentials for making all the API requests. Each client is
+accessible as a top level attribute on the manager object. So to start making
+API requests you just access the client's method for making that call and the
+credentials are already setup for you. For example if you wanted to make an API
+call to create a server in Nova::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      self.os.servers_client.create_server(...)
+
+is all you need to do. As described previously, in the above example the ``self.os``
+is created automatically because the base test class sets the ``credentials``
+attribute to allocate a primary credential set and initializes the client
+manager as ``self.os``. This same access pattern can be used for all of the
+clients in Tempest.
+
+Credentials Objects
+-------------------
+
+In certain cases you need direct access to the credentials. (the most common
+use case would be an API request that takes a user or project id in the request
+body) If you're in a situation where you need to access this you'll need to
+access the ``credentials`` object which is allocated from the configured
+credential provider in the base test class. This is accessible from the manager
+object via the manager's ``credentials`` attribute. For example::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      credentials = self.os.credentials
+
+The credentials object provides access to all of the credential information you
+would need to make API requests. For example, building off the previous
+example::
+
+  from tempest import test
+
+
+  class TestExampleCase(test.BaseTestCase):
+    def test_example_create_server(self):
+      credentials = self.os.credentials
+      username = credentials.username
+      user_id = credentials.user_id
+      password = credentials.password
+      tenant_id = credentials.tenant_id
diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index 0ceb13c..4d0f12a 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -162,11 +162,17 @@
 
         # Attach the volume to the server
         self.attach_volume(server, volume, device='/dev/xvdb')
-
+        server = self.admin_servers_client.show_server(server_id)['server']
+        volume_id1 = server["os-extended-volumes:volumes_attached"][0]["id"]
         self._migrate_server_to(server_id, target_host)
         waiters.wait_for_server_status(self.servers_client,
                                        server_id, 'ACTIVE')
+
+        server = self.admin_servers_client.show_server(server_id)['server']
+        volume_id2 = server["os-extended-volumes:volumes_attached"][0]["id"]
+
         self.assertEqual(target_host, self._get_host_for_server(server_id))
+        self.assertEqual(volume_id1, volume_id2)
 
 
 class LiveAutoBlockMigrationV225TestJSON(LiveBlockMigrationTestJSON):
diff --git a/tempest/api/identity/admin/v3/test_default_project_id.py b/tempest/api/identity/admin/v3/test_default_project_id.py
index c2ab488..ac2faa9 100644
--- a/tempest/api/identity/admin/v3/test_default_project_id.py
+++ b/tempest/api/identity/admin/v3/test_default_project_id.py
@@ -42,13 +42,10 @@
         self.addCleanup(self._delete_domain, dom_id)
 
         # create a project in the domain
-        proj_name = data_utils.rand_name('proj')
-        proj_body = self.projects_client.create_project(
-            proj_name, domain_id=dom_id)['project']
+        proj_body = self.setup_test_project(domain_id=dom_id)
         proj_id = proj_body['id']
-        self.addCleanup(self.projects_client.delete_project, proj_id)
         self.assertEqual(proj_body['domain_id'], dom_id,
-                         "project " + proj_name +
+                         "project " + proj_body['name'] +
                          "doesn't have domain id " + dom_id)
 
         # create a user in the domain, with the previous project as his
diff --git a/tempest/api/identity/admin/v3/test_inherits.py b/tempest/api/identity/admin/v3/test_inherits.py
index 4de0f5b..f630f74 100644
--- a/tempest/api/identity/admin/v3/test_inherits.py
+++ b/tempest/api/identity/admin/v3/test_inherits.py
@@ -147,12 +147,8 @@
         src_role = self.setup_test_role()
 
         # Create a project hierarchy
-        leaf_project_name = data_utils.rand_name('project')
-        leaf_project = self.projects_client.create_project(
-            leaf_project_name, domain_id=self.domain['id'],
-            parent_id=self.project['id'])['project']
-        self.addCleanup(
-            self.projects_client.delete_project, leaf_project['id'])
+        leaf_project = self.setup_test_project(domain_id=self.domain['id'],
+                                               parent_id=self.project['id'])
 
         # Assign role on domain
         self.inherited_roles_client.create_inherited_role_on_domains_user(
@@ -195,12 +191,8 @@
         src_role = self.setup_test_role()
 
         # Create a project hierarchy
-        leaf_project_name = data_utils.rand_name('project')
-        leaf_project = self.projects_client.create_project(
-            leaf_project_name, domain_id=self.domain['id'],
-            parent_id=self.project['id'])['project']
-        self.addCleanup(
-            self.projects_client.delete_project, leaf_project['id'])
+        leaf_project = self.setup_test_project(domain_id=self.domain['id'],
+                                               parent_id=self.project['id'])
 
         # Assign role on parent project
         self.inherited_roles_client.create_inherited_role_on_projects_user(
diff --git a/tempest/api/identity/admin/v3/test_projects.py b/tempest/api/identity/admin/v3/test_projects.py
index 258581b..1b1d3f7 100644
--- a/tempest/api/identity/admin/v3/test_projects.py
+++ b/tempest/api/identity/admin/v3/test_projects.py
@@ -26,11 +26,8 @@
     @decorators.idempotent_id('0ecf465c-0dc4-4532-ab53-91ffeb74d12d')
     def test_project_create_with_description(self):
         # Create project with a description
-        project_name = data_utils.rand_name('project')
         project_desc = data_utils.rand_name('desc')
-        project = self.projects_client.create_project(
-            project_name, description=project_desc)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(description=project_desc)
         project_id = project['id']
         desc1 = project['description']
         self.assertEqual(desc1, project_desc, 'Description should have '
@@ -45,9 +42,8 @@
         # Create project with a domain
         domain = self.setup_test_domain()
         project_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(
-            project_name, domain_id=domain['id'])['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(
+            name=project_name, domain_id=domain['id'])
         project_id = project['id']
         self.assertEqual(project_name, project['name'])
         self.assertEqual(domain['id'], project['domain_id'])
@@ -62,10 +58,8 @@
         domain_id = domain['id']
 
         root_project_name = data_utils.rand_name('root_project')
-        root_project = self.projects_client.create_project(
-            root_project_name, domain_id=domain_id)['project']
-        self.addCleanup(
-            self.projects_client.delete_project, root_project['id'])
+        root_project = self.setup_test_project(
+            name=root_project_name, domain_id=domain_id)
 
         root_project_id = root_project['id']
         parent_id = root_project['parent_id']
@@ -76,21 +70,16 @@
 
         # Create a project using root_project_id as parent_id
         project_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(
-            project_name, domain_id=domain_id,
-            parent_id=root_project_id)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(
+            name=project_name, domain_id=domain_id, parent_id=root_project_id)
         parent_id = project['parent_id']
         self.assertEqual(project_name, project['name'])
         self.assertEqual(root_project_id, parent_id)
 
     @decorators.idempotent_id('a7eb9416-6f9b-4dbb-b71b-7f73aaef59d5')
     def test_create_is_domain_project(self):
-        project_name = data_utils.rand_name('is_domain_project')
-        project = self.projects_client.create_project(
-            project_name, domain_id=None, is_domain=True)['project']
+        project = self.setup_test_project(domain_id=None, is_domain=True)
         # To delete a domain, we need to disable it first
-        self.addCleanup(self.projects_client.delete_project, project['id'])
         self.addCleanup(self.projects_client.update_project, project['id'],
                         enabled=False)
 
@@ -109,10 +98,7 @@
     @decorators.idempotent_id('1f66dc76-50cc-4741-a200-af984509e480')
     def test_project_create_enabled(self):
         # Create a project that is enabled
-        project_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(
-            project_name, enabled=True)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(enabled=True)
         project_id = project['id']
         en1 = project['enabled']
         self.assertTrue(en1, 'Enable should be True in response')
@@ -123,10 +109,7 @@
     @decorators.idempotent_id('78f96a9c-e0e0-4ee6-a3ba-fbf6dfd03207')
     def test_project_create_not_enabled(self):
         # Create a project that is not enabled
-        project_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(
-            project_name, enabled=False)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(enabled=False)
         en1 = project['enabled']
         self.assertEqual('false', str(en1).lower(),
                          'Enable should be False in response')
@@ -139,8 +122,7 @@
     def test_project_update_name(self):
         # Update name attribute of a project
         p_name1 = data_utils.rand_name('project')
-        project = self.projects_client.create_project(p_name1)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(name=p_name1)
 
         resp1_name = project['name']
 
@@ -160,11 +142,8 @@
     @decorators.idempotent_id('f138b715-255e-4a7d-871d-351e1ef2e153')
     def test_project_update_desc(self):
         # Update description attribute of a project
-        p_name = data_utils.rand_name('project')
         p_desc = data_utils.rand_name('desc')
-        project = self.projects_client.create_project(
-            p_name, description=p_desc)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(description=p_desc)
         resp1_desc = project['description']
 
         p_desc2 = data_utils.rand_name('desc2')
@@ -183,11 +162,8 @@
     @decorators.idempotent_id('b6b25683-c97f-474d-a595-55d410b68100')
     def test_project_update_enable(self):
         # Update the enabled attribute of a project
-        p_name = data_utils.rand_name('project')
         p_en = False
-        project = self.projects_client.create_project(p_name,
-                                                      enabled=p_en)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project(enabled=p_en)
 
         resp1_en = project['enabled']
 
@@ -208,9 +184,7 @@
     def test_associate_user_to_project(self):
         # Associate a user to a project
         # Create a Project
-        p_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(p_name)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project()
 
         # Create a User
         u_name = data_utils.rand_name('user')
diff --git a/tempest/api/identity/admin/v3/test_projects_negative.py b/tempest/api/identity/admin/v3/test_projects_negative.py
index 6277fda..33a9c8c 100644
--- a/tempest/api/identity/admin/v3/test_projects_negative.py
+++ b/tempest/api/identity/admin/v3/test_projects_negative.py
@@ -33,8 +33,7 @@
     def test_project_create_duplicate(self):
         # Project names should be unique
         project_name = data_utils.rand_name('project-dup')
-        project = self.projects_client.create_project(project_name)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        self.setup_test_project(name=project_name)
 
         self.assertRaises(lib_exc.Conflict,
                           self.projects_client.create_project, project_name)
@@ -67,9 +66,7 @@
     @decorators.idempotent_id('8d68c012-89e0-4394-8d6b-ccd7196def97')
     def test_project_delete_by_unauthorized_user(self):
         # Non-admin user should not be able to delete a project
-        project_name = data_utils.rand_name('project')
-        project = self.projects_client.create_project(project_name)['project']
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project()
         self.assertRaises(
             lib_exc.Forbidden, self.non_admin_projects_client.delete_project,
             project['id'])
diff --git a/tempest/api/identity/admin/v3/test_tokens.py b/tempest/api/identity/admin/v3/test_tokens.py
index de4f580..1a9502a 100644
--- a/tempest/api/identity/admin/v3/test_tokens.py
+++ b/tempest/api/identity/admin/v3/test_tokens.py
@@ -65,13 +65,10 @@
 
         # Create a couple projects
         project1_name = data_utils.rand_name(name='project')
-        project1 = self.projects_client.create_project(
-            project1_name)['project']
-        self.addCleanup(self.projects_client.delete_project, project1['id'])
+        project1 = self.setup_test_project(name=project1_name)
 
         project2_name = data_utils.rand_name(name='project')
-        project2 = self.projects_client.create_project(
-            project2_name)['project']
+        project2 = self.setup_test_project(name=project2_name)
         self.addCleanup(self.projects_client.delete_project, project2['id'])
 
         # Create a role
diff --git a/tempest/api/identity/admin/v3/test_users.py b/tempest/api/identity/admin/v3/test_users.py
index 28137ad..4f271cb 100644
--- a/tempest/api/identity/admin/v3/test_users.py
+++ b/tempest/api/identity/admin/v3/test_users.py
@@ -42,11 +42,7 @@
         # Delete the User at the end of this method
         self.addCleanup(self.users_client.delete_user, user['id'])
         # Creating second project for updation
-        project = self.projects_client.create_project(
-            data_utils.rand_name('project'),
-            description=data_utils.rand_name('project-desc'))['project']
-        # Delete the Project at the end of this method
-        self.addCleanup(self.projects_client.delete_project, project['id'])
+        project = self.setup_test_project()
         # Updating user details with new values
         u_name2 = data_utils.rand_name('user2')
         u_email2 = u_name2 + '@testmail.tm'
@@ -102,11 +98,7 @@
         # List the projects that a user has access upon
         assigned_project_ids = list()
         fetched_project_ids = list()
-        u_project = self.projects_client.create_project(
-            data_utils.rand_name('project'),
-            description=data_utils.rand_name('project-desc'))['project']
-        # Delete the Project at the end of this method
-        self.addCleanup(self.projects_client.delete_project, u_project['id'])
+        u_project = self.setup_test_project()
         # Create a user.
         u_name = data_utils.rand_name('user')
         u_desc = u_name + 'description'
@@ -124,14 +116,9 @@
         role = self.roles_client.show_role(role_body['id'])['role']
         for _ in range(2):
             # Creating project so as to assign role
-            project_body = self.projects_client.create_project(
-                data_utils.rand_name('project'),
-                description=data_utils.rand_name('project-desc'))['project']
+            project_body = self.setup_test_project()
             project = self.projects_client.show_project(
                 project_body['id'])['project']
-            # Delete the Project at the end of this method
-            self.addCleanup(
-                self.projects_client.delete_project, project_body['id'])
             # Assigning roles to user on project
             self.roles_client.create_user_role_on_project(project['id'],
                                                           user['id'],
diff --git a/tempest/api/identity/base.py b/tempest/api/identity/base.py
index 61b3c84..aff3238 100644
--- a/tempest/api/identity/base.py
+++ b/tempest/api/identity/base.py
@@ -249,11 +249,13 @@
                                      password=password)
         return user
 
-    def setup_test_project(self):
+    def setup_test_project(self, **kwargs):
         """Set up a test project."""
-        project = self.projects_client.create_project(
-            name=data_utils.rand_name('test_project'),
-            description=data_utils.rand_name('desc'))['project']
+        if 'name' not in kwargs:
+            kwargs['name'] = data_utils.rand_name('test_project')
+        if 'description' not in kwargs:
+            kwargs['description'] = data_utils.rand_name('test_description')
+        project = self.projects_client.create_project(**kwargs)['project']
         # Delete the project at the end of the test
         self.addCleanup(
             test_utils.call_and_ignore_notfound_exc,
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index a7ae765..9d6d700 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -16,6 +16,7 @@
 import random
 
 import netaddr
+from oslo_utils import netutils
 
 from tempest.api.network import base
 from tempest.common.utils import net_info
@@ -92,8 +93,8 @@
         port_mac = data_utils.rand_mac_address()
         port = self.create_port(self.network, mac_address=port_mac)
         real_ip = next(iter(port['fixed_ips']), None)['ip_address']
-        eui_ip = data_utils.get_ipv6_addr_by_EUI64(subnet['cidr'],
-                                                   port_mac).format()
+        eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+            subnet['cidr'], port_mac))
         return real_ip, eui_ip
 
     @decorators.idempotent_id('e5517e62-6f16-430d-a672-f80875493d4c')
@@ -188,10 +189,8 @@
                         self.network, **kwargs_dhcp)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
                 port_mac = data_utils.rand_mac_address()
-                eui_ip = data_utils.get_ipv6_addr_by_EUI64(
-                    subnet_slaac['cidr'],
-                    port_mac
-                ).format()
+                eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+                    subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
@@ -236,10 +235,8 @@
                         self.network, ip_version=4)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
                 port_mac = data_utils.rand_mac_address()
-                eui_ip = data_utils.get_ipv6_addr_by_EUI64(
-                    subnet_slaac['cidr'],
-                    port_mac
-                ).format()
+                eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
+                    subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
diff --git a/tempest/api/object_storage/test_account_quotas_negative.py b/tempest/api/object_storage/test_account_quotas_negative.py
index 6784a55..f955d34 100644
--- a/tempest/api/object_storage/test_account_quotas_negative.py
+++ b/tempest/api/object_storage/test_account_quotas_negative.py
@@ -82,11 +82,13 @@
         """Test that a user cannot modify or remove a quota on its account."""
 
         # Not able to remove quota
-        self.assertRaises(lib_exc.Forbidden,
-                          self.account_client.create_account_metadata,
-                          {"Quota-Bytes": ""})
+        self.assertRaises(
+            lib_exc.Forbidden,
+            self.account_client.create_update_or_delete_account_metadata,
+            create_update_metadata={"Quota-Bytes": ""})
 
         # Not able to modify quota
-        self.assertRaises(lib_exc.Forbidden,
-                          self.account_client.create_account_metadata,
-                          {"Quota-Bytes": "100"})
+        self.assertRaises(
+            lib_exc.Forbidden,
+            self.account_client.create_update_or_delete_account_metadata,
+            create_update_metadata={"Quota-Bytes": "100"})
diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index d0a3f10..e54b6e7 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -272,13 +272,15 @@
         # set metadata to account
         metadata = {'test-account-meta1': 'Meta1',
                     'test-account-meta2': 'Meta2'}
-        resp, _ = self.account_client.create_account_metadata(metadata)
+        resp, _ = self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
 
         resp, _ = self.account_client.list_account_metadata()
         self.assertHeaders(resp, 'Account', 'HEAD')
         self.assertIn('x-account-meta-test-account-meta1', resp)
         self.assertIn('x-account-meta-test-account-meta2', resp)
-        self.account_client.delete_account_metadata(metadata)
+        self.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=metadata)
 
     @decorators.idempotent_id('b904c2e3-24c2-4dba-ad7d-04e90a761be5')
     def test_list_no_account_metadata(self):
@@ -291,7 +293,8 @@
     def test_update_account_metadata_with_create_metadata(self):
         # add metadata to account
         metadata = {'test-account-meta1': 'Meta1'}
-        resp, _ = self.account_client.create_account_metadata(metadata)
+        resp, _ = self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, body = self.account_client.list_account_metadata()
@@ -299,14 +302,17 @@
         self.assertEqual(resp['x-account-meta-test-account-meta1'],
                          metadata['test-account-meta1'])
 
-        self.account_client.delete_account_metadata(metadata)
+        self.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=metadata)
 
     @decorators.idempotent_id('9f60348d-c46f-4465-ae06-d51dbd470953')
     def test_update_account_metadata_with_delete_metadata(self):
         # delete metadata from account
         metadata = {'test-account-meta1': 'Meta1'}
-        self.account_client.create_account_metadata(metadata)
-        resp, _ = self.account_client.delete_account_metadata(metadata)
+        self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
+        resp, _ = self.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=metadata)
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, _ = self.account_client.list_account_metadata()
@@ -317,7 +323,8 @@
         # if the value of metadata is not set, the metadata is not
         # registered at a server
         metadata = {'test-account-meta1': ''}
-        resp, _ = self.account_client.create_account_metadata(metadata)
+        resp, _ = self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, _ = self.account_client.list_account_metadata()
@@ -328,9 +335,11 @@
         # Although the value of metadata is not set, the feature of
         # deleting metadata is valid
         metadata_1 = {'test-account-meta1': 'Meta1'}
-        self.account_client.create_account_metadata(metadata_1)
+        self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata_1)
         metadata_2 = {'test-account-meta1': ''}
-        resp, _ = self.account_client.delete_account_metadata(metadata_2)
+        resp, _ = self.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=metadata_2)
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, _ = self.account_client.list_account_metadata()
@@ -340,11 +349,13 @@
     def test_update_account_metadata_with_create_and_delete_metadata(self):
         # Send a request adding and deleting metadata requests simultaneously
         metadata_1 = {'test-account-meta1': 'Meta1'}
-        self.account_client.create_account_metadata(metadata_1)
+        self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata_1)
         metadata_2 = {'test-account-meta2': 'Meta2'}
-        resp, body = self.account_client.create_and_delete_account_metadata(
-            metadata_2,
-            metadata_1)
+        resp, body = (
+            self.account_client.create_update_or_delete_account_metadata(
+                create_update_metadata=metadata_2,
+                delete_metadata=metadata_1))
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, _ = self.account_client.list_account_metadata()
@@ -353,4 +364,5 @@
         self.assertEqual(resp['x-account-meta-test-account-meta2'],
                          metadata_2['test-account-meta2'])
 
-        self.account_client.delete_account_metadata(metadata_2)
+        self.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=metadata_2)
diff --git a/tempest/api/object_storage/test_object_formpost.py b/tempest/api/object_storage/test_object_formpost.py
index c100629..3a2233a 100644
--- a/tempest/api/object_storage/test_object_formpost.py
+++ b/tempest/api/object_storage/test_object_formpost.py
@@ -37,7 +37,8 @@
 
         cls.key = 'Meta'
         cls.metadata = {'Temp-URL-Key': cls.key}
-        cls.account_client.create_account_metadata(metadata=cls.metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=cls.metadata)
 
     def setUp(self):
         super(ObjectFormPostTest, self).setUp()
@@ -53,7 +54,8 @@
 
     @classmethod
     def resource_cleanup(cls):
-        cls.account_client.delete_account_metadata(metadata=cls.metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=cls.metadata)
         cls.delete_containers()
         super(ObjectFormPostTest, cls).resource_cleanup()
 
diff --git a/tempest/api/object_storage/test_object_formpost_negative.py b/tempest/api/object_storage/test_object_formpost_negative.py
index cfa1875..c56d91a 100644
--- a/tempest/api/object_storage/test_object_formpost_negative.py
+++ b/tempest/api/object_storage/test_object_formpost_negative.py
@@ -38,7 +38,8 @@
 
         cls.key = 'Meta'
         cls.metadata = {'Temp-URL-Key': cls.key}
-        cls.account_client.create_account_metadata(metadata=cls.metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=cls.metadata)
 
     def setUp(self):
         super(ObjectFormPostNegativeTest, self).setUp()
@@ -54,7 +55,8 @@
 
     @classmethod
     def resource_cleanup(cls):
-        cls.account_client.delete_account_metadata(metadata=cls.metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=cls.metadata)
         cls.delete_containers()
         super(ObjectFormPostNegativeTest, cls).resource_cleanup()
 
diff --git a/tempest/api/object_storage/test_object_temp_url.py b/tempest/api/object_storage/test_object_temp_url.py
index 912deab..4b506f8 100644
--- a/tempest/api/object_storage/test_object_temp_url.py
+++ b/tempest/api/object_storage/test_object_temp_url.py
@@ -37,7 +37,8 @@
         cls.metadatas = []
         metadata = {'Temp-URL-Key': cls.key}
         cls.metadatas.append(metadata)
-        cls.account_client.create_account_metadata(metadata=metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
 
         # create an object
         cls.object_name, cls.content = cls.create_object(cls.container_name)
@@ -45,8 +46,8 @@
     @classmethod
     def resource_cleanup(cls):
         for metadata in cls.metadatas:
-            cls.account_client.delete_account_metadata(
-                metadata=metadata)
+            cls.account_client.create_update_or_delete_account_metadata(
+                delete_metadata=metadata)
 
         cls.delete_containers()
 
@@ -110,7 +111,8 @@
     def test_get_object_using_temp_url_key_2(self):
         key2 = 'Meta2-'
         metadata = {'Temp-URL-Key-2': key2}
-        self.account_client.create_account_metadata(metadata=metadata)
+        self.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=metadata)
         self.metadatas.append(metadata)
 
         # make sure the metadata has been set
diff --git a/tempest/api/object_storage/test_object_temp_url_negative.py b/tempest/api/object_storage/test_object_temp_url_negative.py
index 578249b..f4d63fd 100644
--- a/tempest/api/object_storage/test_object_temp_url_negative.py
+++ b/tempest/api/object_storage/test_object_temp_url_negative.py
@@ -39,14 +39,15 @@
         # update account metadata
         cls.key = 'Meta'
         cls.metadata = {'Temp-URL-Key': cls.key}
-        cls.account_client.create_account_metadata(metadata=cls.metadata)
+        cls.account_client.create_update_or_delete_account_metadata(
+            create_update_metadata=cls.metadata)
         cls.account_client_metadata, _ = \
             cls.account_client.list_account_metadata()
 
     @classmethod
     def resource_cleanup(cls):
-        resp, _ = cls.account_client.delete_account_metadata(
-            metadata=cls.metadata)
+        resp, _ = cls.account_client.create_update_or_delete_account_metadata(
+            delete_metadata=cls.metadata)
 
         cls.delete_containers()
 
diff --git a/tempest/services/object_storage/account_client.py b/tempest/services/object_storage/account_client.py
index 469e58d..5a1737e 100644
--- a/tempest/services/object_storage/account_client.py
+++ b/tempest/services/object_storage/account_client.py
@@ -23,6 +23,32 @@
 
 class AccountClient(rest_client.RestClient):
 
+    def create_update_or_delete_account_metadata(
+            self,
+            create_update_metadata=None,
+            delete_metadata=None,
+            create_update_metadata_prefix='X-Account-Meta-',
+            delete_metadata_prefix='X-Remove-Account-Meta-'):
+        """Creates, Updates or deletes an account metadata entry.
+
+        Account Metadata can be created, updated or deleted based on
+        metadata header or value. For detailed info, please refer to the
+        official API reference:
+        http://developer.openstack.org/api-ref/object-storage/?expanded=create-update-or-delete-account-metadata-detail
+        """
+        headers = {}
+        if create_update_metadata:
+            for key in create_update_metadata:
+                metadata_header_name = create_update_metadata_prefix + key
+                headers[metadata_header_name] = create_update_metadata[key]
+        if delete_metadata:
+            for key in delete_metadata:
+                headers[delete_metadata_prefix + key] = delete_metadata[key]
+
+        resp, body = self.post('', headers=headers, body=None)
+        self.expected_success([200, 204], resp.status)
+        return resp, body
+
     def list_account_metadata(self):
         """HEAD on the storage URL
 
@@ -32,46 +58,6 @@
         self.expected_success(204, resp.status)
         return resp, body
 
-    def create_account_metadata(self, metadata,
-                                metadata_prefix='X-Account-Meta-'):
-        """Creates an account metadata entry."""
-        headers = {}
-        if metadata:
-            for key in metadata:
-                headers[metadata_prefix + key] = metadata[key]
-
-        resp, body = self.post('', headers=headers, body=None)
-        self.expected_success([200, 204], resp.status)
-        return resp, body
-
-    def delete_account_metadata(self, metadata,
-                                metadata_prefix='X-Remove-Account-Meta-'):
-        """Deletes an account metadata entry."""
-
-        headers = {}
-        for item in metadata:
-            headers[metadata_prefix + item] = metadata[item]
-        resp, body = self.post('', headers=headers, body=None)
-        self.expected_success(204, resp.status)
-        return resp, body
-
-    def create_and_delete_account_metadata(
-            self,
-            create_metadata=None,
-            delete_metadata=None,
-            create_metadata_prefix='X-Account-Meta-',
-            delete_metadata_prefix='X-Remove-Account-Meta-'):
-        """Creates and deletes an account metadata entry."""
-        headers = {}
-        for key in create_metadata:
-            headers[create_metadata_prefix + key] = create_metadata[key]
-        for key in delete_metadata:
-            headers[delete_metadata_prefix + key] = delete_metadata[key]
-
-        resp, body = self.post('', headers=headers, body=None)
-        self.expected_success(204, resp.status)
-        return resp, body
-
     def list_account_containers(self, params=None):
         """GET on the (base) storage URL
 
diff --git a/tempest/tests/fake_config.py b/tempest/tests/fake_config.py
index 4e957a0..ee63684 100644
--- a/tempest/tests/fake_config.py
+++ b/tempest/tests/fake_config.py
@@ -103,5 +103,4 @@
         self._set_attrs()
         self.fake_service1 = cfg.CONF['fake-service1']
         self.fake_service2 = cfg.CONF['fake-service2']
-        print('Services registered')
         self.lock_path = cfg.CONF.oslo_concurrency.lock_path
diff --git a/tempest/tests/lib/common/test_cred_client.py b/tempest/tests/lib/common/test_cred_client.py
index 1cb3103..3dff16f 100644
--- a/tempest/tests/lib/common/test_cred_client.py
+++ b/tempest/tests/lib/common/test_cred_client.py
@@ -73,6 +73,5 @@
 
     def test_delete_project(self):
         self.creds_client.delete_project('fake_id')
-        print(self.projects_client.calls)
         self.projects_client.delete_project.assert_called_once_with(
             'fake_id')