Add V2 user roles tests

The cross over between the user manager and the role manager is not
tested. As this will be changed soon re-enforce the current behaviour.

Change-Id: I3f8d8215a10cf09cfaad57ffa359f36d0417fb31

keystoneclient/tests/v2_0/test_users.py

@@ -15,6 +15,7 @@ import uuid
 import httpretty
 
 from keystoneclient.tests.v2_0 import utils
+from keystoneclient.v2_0 import roles
 from keystoneclient.v2_0 import users
 
 
@@ -235,3 +236,49 @@ class UserTests(utils.TestCase):
         self.client.user_id = user_id
         self.client.users.update_own_password('DCBA', 'ABCD')
         self.assertRequestBodyIs(json=req_body)
+
+    @httpretty.activate
+    def test_user_role_listing(self):
+        user_id = uuid.uuid4().hex
+        role_id1 = uuid.uuid4().hex
+        role_id2 = uuid.uuid4().hex
+        tenant_id = uuid.uuid4().hex
+
+        user_resp = {
+            'user': {
+                'id': user_id,
+                'email': uuid.uuid4().hex,
+                'name': uuid.uuid4().hex,
+            }
+        }
+
+        roles_resp = {
+            'roles': {
+                'values': [
+                    {
+                        'name': uuid.uuid4().hex,
+                        'id': role_id1,
+                    },
+                    {
+                        'name': uuid.uuid4().hex,
+                        'id': role_id2,
+                    }
+                ]
+            }
+        }
+
+        self.stub_url(httpretty.GET,
+                      ['users', user_id],
+                      json=user_resp)
+        self.stub_url(httpretty.GET,
+                      ['tenants', tenant_id, 'users', user_id, 'roles'],
+                      json=roles_resp)
+
+        user = self.client.users.get(user_id)
+        role_objs = user.list_roles(tenant_id)
+
+        for r in role_objs:
+            self.assertIsInstance(r, roles.Role)
+
+        self.assertEqual(set([role_id1, role_id2]),
+                         set([r.id for r in role_objs]))