diff --git a/tempest/api/identity/admin/v3/test_trusts.py b/tempest/api/identity/admin/v3/test_trusts.py
new file mode 100644
index 0000000..5e13a5a
--- /dev/null
+++ b/tempest/api/identity/admin/v3/test_trusts.py
@@ -0,0 +1,222 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+from tempest.api.identity import base
+from tempest import clients
+from tempest.common.utils.data_utils import rand_name
+from tempest import exceptions
+from tempest.test import attr
+
+
+class BaseTrustsV3Test(base.BaseIdentityAdminTest):
+
+    def setUp(self):
+        super(BaseTrustsV3Test, self).setUp()
+        # Use alt_username as the trustee
+        self.trustee_username = self.config.identity.alt_username
+
+        self.trust_id = None
+        self.create_trustor_and_roles()
+        self.addCleanup(self.cleanup_trust_user_and_roles)
+
+    def create_trustor_and_roles(self):
+        # Get trustor project ID, use the admin project
+        self.trustor_project_name = self.v3_client.tenant_name
+        self.trustor_project_id = self.get_tenant_by_name(
+            self.trustor_project_name)['id']
+        self.assertIsNotNone(self.trustor_project_id)
+
+        # Create a trustor User
+        self.trustor_username = rand_name('user-')
+        u_desc = self.trustor_username + 'description'
+        u_email = self.trustor_username + '@testmail.tm'
+        self.trustor_password = rand_name('pass-')
+        resp, user = self.v3_client.create_user(
+            self.trustor_username,
+            description=u_desc,
+            password=self.trustor_password,
+            email=u_email,
+            project_id=self.trustor_project_id)
+        self.assertEqual(resp['status'], '201')
+        self.trustor_user_id = user['id']
+
+        # And two roles, one we'll delegate and one we won't
+        self.delegated_role = rand_name('DelegatedRole-')
+        self.not_delegated_role = rand_name('NotDelegatedRole-')
+
+        resp, role = self.v3_client.create_role(self.delegated_role)
+        self.assertEqual(resp['status'], '201')
+        self.delegated_role_id = role['id']
+
+        resp, role = self.v3_client.create_role(self.not_delegated_role)
+        self.assertEqual(resp['status'], '201')
+        self.not_delegated_role_id = role['id']
+
+        # Assign roles to trustor
+        self.v3_client.assign_user_role(self.trustor_project_id,
+                                        self.trustor_user_id,
+                                        self.delegated_role_id)
+        self.v3_client.assign_user_role(self.trustor_project_id,
+                                        self.trustor_user_id,
+                                        self.not_delegated_role_id)
+
+        # Get trustee user ID, use the demo user
+        trustee_username = self.v3_non_admin_client.user
+        self.trustee_user_id = self.get_user_by_name(trustee_username)['id']
+        self.assertIsNotNone(self.trustee_user_id)
+
+        # Initialize a new client with the trustor credentials
+        os = clients.Manager(username=self.trustor_username,
+                             password=self.trustor_password,
+                             tenant_name=self.trustor_project_name,
+                             interface=self._interface)
+        self.trustor_v3_client = os.identity_v3_client
+
+    def cleanup_trust_user_and_roles(self):
+        if self.trust_id:
+            try:
+                self.trustor_v3_client.delete_trust(self.trust_id)
+            except exceptions.NotFound:
+                pass
+            self.trust_id = None
+
+        if self.trustor_user_id:
+            self.v3_client.delete_user(self.trustor_user_id)
+        if self.delegated_role_id:
+            self.v3_client.delete_role(self.delegated_role_id)
+        if self.not_delegated_role_id:
+            self.v3_client.delete_role(self.not_delegated_role_id)
+
+    def create_trust(self, impersonate=True, expires=None):
+
+        resp, trust_create = self.trustor_v3_client.create_trust(
+            trustor_user_id=self.trustor_user_id,
+            trustee_user_id=self.trustee_user_id,
+            project_id=self.trustor_project_id,
+            role_names=[self.delegated_role],
+            impersonation=impersonate,
+            expires_at=expires)
+        self.assertEqual('201', resp['status'])
+        self.trust_id = trust_create['id']
+        return trust_create
+
+    def validate_trust(self, trust, impersonate=True, expires=None,
+                       summary=False):
+        self.assertIsNotNone(trust['id'])
+        self.assertEqual(impersonate, trust['impersonation'])
+        self.assertEqual(expires, trust['expires_at'])
+        self.assertEqual(self.trustor_user_id, trust['trustor_user_id'])
+        self.assertEqual(self.trustee_user_id, trust['trustee_user_id'])
+        self.assertIn('v3/OS-TRUST/trusts', trust['links']['self'])
+        self.assertEqual(self.trustor_project_id, trust['project_id'])
+        if not summary:
+            self.assertEqual(self.delegated_role, trust['roles'][0]['name'])
+            self.assertEqual(1, len(trust['roles']))
+
+    def get_trust(self):
+        resp, trust_get = self.trustor_v3_client.get_trust(self.trust_id)
+        self.assertEqual('200', resp['status'])
+        return trust_get
+
+    def validate_role(self, role):
+        self.assertEqual(self.delegated_role_id, role['id'])
+        self.assertEqual(self.delegated_role, role['name'])
+        self.assertIn('v3/roles/%s' % self.delegated_role_id,
+                      role['links']['self'])
+        self.assertNotEqual(self.not_delegated_role_id, role['id'])
+        self.assertNotEqual(self.not_delegated_role, role['name'])
+        self.assertNotIn('v3/roles/%s' % self.not_delegated_role_id,
+                         role['links']['self'])
+
+    def check_trust_roles(self):
+        # Check we find the delegated role
+        resp, roles_get = self.trustor_v3_client.get_trust_roles(
+            self.trust_id)
+        self.assertEqual('200', resp['status'])
+        self.assertEqual(1, len(roles_get))
+        self.validate_role(roles_get[0])
+
+        resp, role_get = self.trustor_v3_client.get_trust_role(
+            self.trust_id, self.delegated_role_id)
+        self.assertEqual('200', resp['status'])
+        self.validate_role(role_get)
+
+        resp, role_get = self.trustor_v3_client.check_trust_role(
+            self.trust_id, self.delegated_role_id)
+        self.assertEqual('204', resp['status'])
+
+        # And that we don't find not_delegated_role
+        self.assertRaises(exceptions.NotFound,
+                          self.trustor_v3_client.get_trust_role,
+                          self.trust_id,
+                          self.not_delegated_role_id)
+
+        self.assertRaises(exceptions.NotFound,
+                          self.trustor_v3_client.check_trust_role,
+                          self.trust_id,
+                          self.not_delegated_role_id)
+
+    def delete_trust(self):
+        resp, trust_delete = self.trustor_v3_client.delete_trust(self.trust_id)
+        self.assertEqual('204', resp['status'])
+        self.assertRaises(exceptions.NotFound,
+                          self.trustor_v3_client.get_trust,
+                          self.trust_id)
+        self.trust_id = None
+
+
+class TrustsV3TestJSON(BaseTrustsV3Test):
+    _interface = 'json'
+
+    def setUp(self):
+        super(TrustsV3TestJSON, self).setUp()
+        self.create_trustor_and_roles()
+
+    @attr(type='smoke')
+    def test_trust_impersonate(self):
+        # Test case to check we can create, get and delete a trust
+        # updates are not supported for trusts
+        trust = self.create_trust()
+        self.validate_trust(trust)
+
+        trust_get = self.get_trust()
+        self.validate_trust(trust_get)
+
+        self.check_trust_roles()
+
+        self.delete_trust()
+
+    @attr(type='smoke')
+    def test_trust_noimpersonate(self):
+        # Test case to check we can create, get and delete a trust
+        # with impersonation=False
+        trust = self.create_trust(impersonate=False)
+        self.validate_trust(trust, impersonate=False)
+
+        trust_get = self.get_trust()
+        self.validate_trust(trust_get, impersonate=False)
+
+        self.check_trust_roles()
+
+        self.delete_trust()
+
+    @attr(type='smoke')
+    def test_trust_expire_invalid(self):
+        # Test case to check we can check an invlaid expiry time
+        # is rejected with the correct error
+        # with an expiry specified
+        expires_str = 'bad.123Z'
+        self.assertRaises(exceptions.BadRequest,
+                          self.create_trust,
+                          expires=expires_str)
diff --git a/tempest/services/identity/v3/json/identity_client.py b/tempest/services/identity/v3/json/identity_client.py
index ec99d37..e457c1f 100644
--- a/tempest/services/identity/v3/json/identity_client.py
+++ b/tempest/services/identity/v3/json/identity_client.py
@@ -359,6 +359,66 @@
                                  (domain_id, group_id, role_id))
         return resp, body
 
+    def create_trust(self, trustor_user_id, trustee_user_id, project_id,
+                     role_names, impersonation, expires_at):
+        """Creates a trust."""
+        roles = [{'name': n} for n in role_names]
+        post_body = {
+            'trustor_user_id': trustor_user_id,
+            'trustee_user_id': trustee_user_id,
+            'project_id': project_id,
+            'impersonation': impersonation,
+            'roles': roles,
+            'expires_at': expires_at
+        }
+        post_body = json.dumps({'trust': post_body})
+        resp, body = self.post('OS-TRUST/trusts', post_body, self.headers)
+        body = json.loads(body)
+        return resp, body['trust']
+
+    def delete_trust(self, trust_id):
+        """Deletes a trust."""
+        resp, body = self.delete("OS-TRUST/trusts/%s" % trust_id)
+        return resp, body
+
+    def get_trusts(self, trustor_user_id=None, trustee_user_id=None):
+        """GET trusts."""
+        if trustor_user_id:
+            resp, body = self.get("OS-TRUST/trusts?trustor_user_id=%s"
+                                  % trustor_user_id)
+        elif trustee_user_id:
+            resp, body = self.get("OS-TRUST/trusts?trustee_user_id=%s"
+                                  % trustee_user_id)
+        else:
+            resp, body = self.get("OS-TRUST/trusts")
+        body = json.loads(body)
+        return resp, body['trusts']
+
+    def get_trust(self, trust_id):
+        """GET trust."""
+        resp, body = self.get("OS-TRUST/trusts/%s" % trust_id)
+        body = json.loads(body)
+        return resp, body['trust']
+
+    def get_trust_roles(self, trust_id):
+        """GET roles delegated by a trust."""
+        resp, body = self.get("OS-TRUST/trusts/%s/roles" % trust_id)
+        body = json.loads(body)
+        return resp, body['roles']
+
+    def get_trust_role(self, trust_id, role_id):
+        """GET role delegated by a trust."""
+        resp, body = self.get("OS-TRUST/trusts/%s/roles/%s"
+                              % (trust_id, role_id))
+        body = json.loads(body)
+        return resp, body['role']
+
+    def check_trust_role(self, trust_id, role_id):
+        """HEAD Check if role is delegated by a trust."""
+        resp, body = self.head("OS-TRUST/trusts/%s/roles/%s"
+                               % (trust_id, role_id))
+        return resp, body
+
 
 class V3TokenClientJSON(RestClient):