Test that tenant list function can use auth_url

Listing tenants can be done on the auth URL because it is often needed
to be performed with an unscoped token. The behaviour is not tested
though so add a test to cover it.

Change-Id: Ic14d54f0f1d8cca2c3a5a6a6da7465c703773aa0

keystoneclient/tests/v2_0/test_tenants.py

@@ -15,7 +15,9 @@ import uuid
 import httpretty
 
 from keystoneclient import exceptions
+from keystoneclient import fixture
 from keystoneclient.tests.v2_0 import utils
+from keystoneclient.v2_0 import client
 from keystoneclient.v2_0 import tenants
 from keystoneclient.v2_0 import users
 
@@ -345,3 +347,38 @@ class TenantTests(utils.TestCase):
 
         self.assertEqual(set([user_id1, user_id2]),
                          set([u.id for u in user_objs]))
+
+    @httpretty.activate
+    def test_list_tenants_use_admin_url(self):
+        self.stub_url(httpretty.GET, ['tenants'], json=self.TEST_TENANTS)
+
+        self.assertEqual(self.TEST_URL, self.client.management_url)
+
+        tenant_list = self.client.tenants.list()
+        [self.assertIsInstance(t, tenants.Tenant) for t in tenant_list]
+
+        self.assertEqual(len(self.TEST_TENANTS['tenants']['values']),
+                         len(tenant_list))
+
+    @httpretty.activate
+    def test_list_tenants_fallback_to_auth_url(self):
+        new_auth_url = 'http://keystone.test:5000/v2.0'
+
+        token = fixture.V2Token(token_id=self.TEST_TOKEN,
+                                user_name=self.TEST_USER,
+                                user_id=self.TEST_USER_ID)
+
+        self.stub_auth(base_url=new_auth_url, json=token)
+        self.stub_url(httpretty.GET, ['tenants'], base_url=new_auth_url,
+                      json=self.TEST_TENANTS)
+
+        c = client.Client(username=self.TEST_USER,
+                          auth_url=new_auth_url,
+                          password=uuid.uuid4().hex)
+
+        self.assertIsNone(c.management_url)
+        tenant_list = c.tenants.list()
+        [self.assertIsInstance(t, tenants.Tenant) for t in tenant_list]
+
+        self.assertEqual(len(self.TEST_TENANTS['tenants']['values']),
+                         len(tenant_list))