diff --git a/tempest/api/object_storage/test_account_services.py b/tempest/api/object_storage/test_account_services.py
index 7542ea1..4b895d8 100644
--- a/tempest/api/object_storage/test_account_services.py
+++ b/tempest/api/object_storage/test_account_services.py
@@ -18,10 +18,15 @@
 from six import moves
 
 from tempest.api.object_storage import base
+from tempest import clients
 from tempest.common import custom_matchers
 from tempest.common.utils import data_utils
+from tempest import config
+from tempest import exceptions
 from tempest import test
 
+CONF = config.CONF
+
 
 class AccountTest(base.BaseObjectTest):
     @classmethod
@@ -37,20 +42,109 @@
     @classmethod
     def tearDownClass(cls):
         cls.delete_containers(cls.containers)
+        cls.data.teardown_all()
         super(AccountTest, cls).tearDownClass()
 
     @test.attr(type='smoke')
     def test_list_containers(self):
         # list of all containers should not be empty
-        params = {'format': 'json'}
-        resp, container_list = \
-            self.account_client.list_account_containers(params=params)
+        resp, container_list = self.account_client.list_account_containers()
         self.assertHeaders(resp, 'Account', 'GET')
 
         self.assertIsNotNone(container_list)
-        container_names = [c['name'] for c in container_list]
         for container_name in self.containers:
-            self.assertIn(container_name, container_names)
+            self.assertIn(container_name, container_list)
+
+    @test.attr(type='smoke')
+    def test_list_no_containers(self):
+        # List request to empty account
+
+        # To test listing no containers, create new user other than
+        # the base user of this instance.
+        self.data.setup_test_user()
+
+        os_test_user = clients.Manager(
+            self.data.test_user,
+            self.data.test_password,
+            self.data.test_tenant)
+
+        # Retrieve the id of an operator role of object storage
+        test_role_id = None
+        swift_role = CONF.object_storage.operator_role
+        try:
+            _, roles = self.os_admin.identity_client.list_roles()
+            test_role_id = next(r['id'] for r in roles if r['name']
+                                == swift_role)
+        except StopIteration:
+            msg = "%s role found" % swift_role
+            raise exceptions.NotFound(msg)
+
+        # Retrieve the test_user id
+        _, users = self.os_admin.identity_client.get_users()
+        test_user_id = next(usr['id'] for usr in users if usr['name']
+                            == self.data.test_user)
+
+        # Retrieve the test_tenant id
+        _, tenants = self.os_admin.identity_client.list_tenants()
+        test_tenant_id = next(tnt['id'] for tnt in tenants if tnt['name']
+                              == self.data.test_tenant)
+
+        # Assign the newly created user the appropriate operator role
+        self.os_admin.identity_client.assign_user_role(
+            test_tenant_id,
+            test_user_id,
+            test_role_id)
+
+        resp, container_list = \
+            os_test_user.account_client.list_account_containers()
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+
+        # When sending a request to an account which has not received a PUT
+        # container request, the response does not contain 'accept-ranges'
+        # header. This is a special case, therefore the existence of response
+        # headers is checked without custom matcher.
+        self.assertIn('content-length', resp)
+        self.assertIn('x-timestamp', resp)
+        self.assertIn('x-account-bytes-used', resp)
+        self.assertIn('x-account-container-count', resp)
+        self.assertIn('x-account-object-count', resp)
+        self.assertIn('content-type', resp)
+        self.assertIn('x-trans-id', resp)
+        self.assertIn('date', resp)
+
+        # Check only the format of common headers with custom matcher
+        self.assertThat(resp, custom_matchers.AreAllWellFormatted())
+
+        self.assertEqual(len(container_list), 0)
+
+    @test.attr(type='smoke')
+    def test_list_containers_with_format_json(self):
+        # list containers setting format parameter to 'json'
+        params = {'format': 'json'}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertIsNotNone(container_list)
+        self.assertTrue([c['name'] for c in container_list])
+        self.assertTrue([c['count'] for c in container_list])
+        self.assertTrue([c['bytes'] for c in container_list])
+
+    @test.attr(type='smoke')
+    def test_list_containers_with_format_xml(self):
+        # list containers setting format parameter to 'xml'
+        params = {'format': 'xml'}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertIsNotNone(container_list)
+        self.assertEqual(container_list.tag, 'account')
+        self.assertTrue('name' in container_list.keys())
+        self.assertEqual(container_list.find(".//container").tag, 'container')
+        self.assertEqual(container_list.find(".//name").tag, 'name')
+        self.assertEqual(container_list.find(".//count").tag, 'count')
+        self.assertEqual(container_list.find(".//bytes").tag, 'bytes')
 
     @test.attr(type='smoke')
     def test_list_extensions(self):
@@ -109,6 +203,17 @@
         self.assertEqual(len(container_list), self.containers_count / 2)
 
     @test.attr(type='smoke')
+    def test_list_containers_with_marker_and_end_marker(self):
+        # list containers combining marker and end_marker param
+        params = {'marker': self.containers[0],
+                  'end_marker': self.containers[self.containers_count - 1]}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertEqual(len(container_list), self.containers_count - 2)
+
+    @test.attr(type='smoke')
     def test_list_containers_with_limit_and_marker(self):
         # list containers combining marker and limit param
         # result are always limitated by the limit whatever the marker
@@ -123,34 +228,125 @@
             self.assertTrue(len(container_list) <= limit, str(container_list))
 
     @test.attr(type='smoke')
-    def test_list_account_metadata(self):
-        # list all account metadata
-        resp, metadata = self.account_client.list_account_metadata()
+    def test_list_containers_with_limit_and_end_marker(self):
+        # list containers combining limit and end_marker param
+        limit = random.randint(1, self.containers_count)
+        params = {'limit': limit,
+                  'end_marker': self.containers[self.containers_count / 2]}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
         self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
-        self.assertHeaders(resp, 'Account', 'HEAD')
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertEqual(len(container_list),
+                         min(limit, self.containers_count / 2))
 
     @test.attr(type='smoke')
-    def test_create_and_delete_account_metadata(self):
-        header = 'test-account-meta'
-        data = 'Meta!'
+    def test_list_containers_with_limit_and_marker_and_end_marker(self):
+        # list containers combining limit, marker and end_marker param
+        limit = random.randint(1, self.containers_count)
+        params = {'limit': limit,
+                  'marker': self.containers[0],
+                  'end_marker': self.containers[self.containers_count - 1]}
+        resp, container_list = self.account_client.list_account_containers(
+            params=params)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'GET')
+        self.assertEqual(len(container_list),
+                         min(limit, self.containers_count - 2))
+
+    @test.attr(type='smoke')
+    def test_list_account_metadata(self):
+        # list all account metadata
+
+        # 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.list_account_metadata()
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        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)
+
+    @test.attr(type='smoke')
+    def test_list_no_account_metadata(self):
+        # list no account metadata
+        resp, _ = self.account_client.list_account_metadata()
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'HEAD')
+        self.assertNotIn('x-account-meta-', str(resp))
+
+    @test.attr(type='smoke')
+    def test_update_account_metadata_with_create_metadata(self):
         # add metadata to account
-        resp, _ = self.account_client.create_account_metadata(
-            metadata={header: data})
+        metadata = {'test-account-meta1': 'Meta1'}
+        resp, _ = self.account_client.create_account_metadata(metadata)
         self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
         self.assertHeaders(resp, 'Account', 'POST')
 
-        resp, _ = self.account_client.list_account_metadata()
-        self.assertHeaders(resp, 'Account', 'HEAD')
+        resp, body = self.account_client.list_account_metadata()
+        self.assertIn('x-account-meta-test-account-meta1', resp)
+        self.assertEqual(resp['x-account-meta-test-account-meta1'],
+                         metadata['test-account-meta1'])
 
-        self.assertIn('x-account-meta-' + header, resp)
-        self.assertEqual(resp['x-account-meta-' + header], data)
+        self.account_client.delete_account_metadata(metadata)
 
+    @test.attr(type='smoke')
+    def test_update_account_metadata_with_delete_matadata(self):
         # delete metadata from account
-        resp, _ = \
-            self.account_client.delete_account_metadata(metadata=[header])
+        metadata = {'test-account-meta1': 'Meta1'}
+        self.account_client.create_account_metadata(metadata)
+        resp, _ = self.account_client.delete_account_metadata(metadata)
         self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
         self.assertHeaders(resp, 'Account', 'POST')
 
         resp, _ = self.account_client.list_account_metadata()
-        self.assertHeaders(resp, 'Account', 'HEAD')
-        self.assertNotIn('x-account-meta-' + header, resp)
+        self.assertNotIn('x-account-meta-test-account-meta1', resp)
+
+    @test.attr(type='smoke')
+    def test_update_account_metadata_with_create_matadata_key(self):
+        # 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)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'POST')
+
+        resp, _ = self.account_client.list_account_metadata()
+        self.assertNotIn('x-account-meta-test-account-meta1', resp)
+
+    @test.attr(type='smoke')
+    def test_update_account_metadata_with_delete_matadata_key(self):
+        # 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)
+        metadata_2 = {'test-account-meta1': ''}
+        resp, _ = self.account_client.delete_account_metadata(metadata_2)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'POST')
+
+        resp, _ = self.account_client.list_account_metadata()
+        self.assertNotIn('x-account-meta-test-account-meta1', resp)
+
+    @test.attr(type='smoke')
+    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)
+        metadata_2 = {'test-account-meta2': 'Meta2'}
+        resp, body = self.account_client.create_and_delete_account_metadata(
+            metadata_2,
+            metadata_1)
+        self.assertIn(int(resp['status']), test.HTTP_SUCCESS)
+        self.assertHeaders(resp, 'Account', 'POST')
+
+        resp, _ = self.account_client.list_account_metadata()
+        self.assertNotIn('x-account-meta-test-account-meta1', resp)
+        self.assertIn('x-account-meta-test-account-meta2', resp)
+        self.assertEqual(resp['x-account-meta-test-account-meta2'],
+                         metadata_2['test-account-meta2'])
+
+        self.account_client.delete_account_metadata(metadata_2)
diff --git a/tempest/api/object_storage/test_object_temp_url.py b/tempest/api/object_storage/test_object_temp_url.py
index 47c270e..c597255 100644
--- a/tempest/api/object_storage/test_object_temp_url.py
+++ b/tempest/api/object_storage/test_object_temp_url.py
@@ -40,9 +40,9 @@
         # update account metadata
         cls.key = 'Meta'
         cls.metadatas = []
-        cls.metadata = {'Temp-URL-Key': cls.key}
-        cls.metadatas.append(cls.metadata)
-        cls.account_client.create_account_metadata(metadata=cls.metadata)
+        metadata = {'Temp-URL-Key': cls.key}
+        cls.metadatas.append(metadata)
+        cls.account_client.create_account_metadata(metadata=metadata)
 
         # create an object
         cls.object_name = data_utils.rand_name(name='ObjectTemp')
@@ -53,7 +53,7 @@
 
     @classmethod
     def tearDownClass(cls):
-        for metadata in cls.metadata:
+        for metadata in cls.metadatas:
             cls.account_client.delete_account_metadata(
                 metadata=metadata)
 
diff --git a/tempest/services/object_storage/account_client.py b/tempest/services/object_storage/account_client.py
index efac5f5..be314cc 100644
--- a/tempest/services/object_storage/account_client.py
+++ b/tempest/services/object_storage/account_client.py
@@ -20,6 +20,7 @@
 from tempest.common.rest_client import RestClient
 from tempest import config
 from tempest import exceptions
+from xml.etree import ElementTree as etree
 
 CONF = config.CONF
 
@@ -28,7 +29,6 @@
     def __init__(self, auth_provider):
         super(AccountClient, self).__init__(auth_provider)
         self.service = CONF.object_storage.catalog_type
-        self.format = 'json'
 
     def create_account(self, data=None,
                        params=None,
@@ -87,7 +87,25 @@
 
         headers = {}
         for item in metadata:
-            headers[metadata_prefix + item] = 'x'
+            headers[metadata_prefix + item] = metadata[item]
+        resp, body = self.post('', headers=headers, body=None)
+        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)
         return resp, body
 
@@ -112,24 +130,23 @@
             response.
             DEFAULT:  Python-List returned in response body
         """
+        url = '?%s' % urllib.urlencode(params) if params else ''
 
-        if params:
-            if 'format' not in params:
-                params['format'] = self.format
-        else:
-            params = {'format': self.format}
-
-        url = '?' + urllib.urlencode(params)
-        resp, body = self.get(url)
-
+        resp, body = self.get(url, headers={})
         if params and params.get('format') == 'json':
             body = json.loads(body)
+        elif params and params.get('format') == 'xml':
+            body = etree.fromstring(body)
+        else:
+            body = body.strip().splitlines()
         return resp, body
 
     def list_extensions(self):
         self.skip_path()
-        resp, body = self.get('info')
-        self.reset_path()
+        try:
+            resp, body = self.get('info')
+        finally:
+            self.reset_path()
         body = json.loads(body)
         return resp, body