Enhance functional class to provide default info

Modify the base class for functional tests so that base scope and user
information can be loaded from the client, which in turn was
instantiated from cloud config.

The base scope and user info will be used in tests, e.g when creating a
user, we will use the domain from the base class to put the user in.
The base project will be used as the default user's project.

Change-Id: Ib01da8d8bfc11a06bf0d79fac2089ca5b9506670

keystoneclient/tests/functional/base.py

@@ -15,16 +15,12 @@ import testtools
 from keystoneclient import client
 import os_client_config
 
+IDENTITY_CLIENT = 'identity'
+OPENSTACK_CLOUDS = ('functional_admin', 'devstack-admin', 'envvars')
 
-class ClientTestCase(testtools.TestCase):
 
-    def setUp(self):
-        super(ClientTestCase, self).setUp()
-
-        self.client = self.get_client()
-
-    def get_client(self):
-        """Creates a keystoneclient instance to run functional tests
+def get_client(version):
+    """Creates a keystoneclient instance to run functional tests
 
         The client is instantiated via os-client-config either based on a
         clouds.yaml config file or from the environment variables.
@@ -34,21 +30,55 @@ class ClientTestCase(testtools.TestCase):
         that is not found, check for the 'devstack-admin' cloud. Finally, fall
         back to looking for environment variables.
 
-        """
-        IDENTITY_CLIENT = 'identity'
-        OPENSTACK_CLOUDS = ('functional_admin', 'devstack-admin', 'envvars')
+    """
+    for cloud in OPENSTACK_CLOUDS:
+        try:
+            cloud_config = os_client_config.get_config(
+                cloud=cloud, identity_api_version=version)
+            return cloud_config.get_legacy_client(service_key=IDENTITY_CLIENT,
+                                                  constructor=client.Client)
 
-        for cloud in OPENSTACK_CLOUDS:
-            try:
-                return os_client_config.make_client(
-                    IDENTITY_CLIENT, client.Client, cloud=cloud,
-                    identity_api_version=self.version)
-            except os_client_config.exceptions.OpenStackConfigException:
-                pass
+        except os_client_config.exceptions.OpenStackConfigException:
+            pass
 
-        raise Exception("Could not find any cloud definition for clouds named"
-                        " functional_admin or devstack-admin. Check your"
-                        " clouds.yaml file or your envvars and try again.")
+    raise Exception("Could not find any cloud definition for clouds named"
+                    " functional_admin or devstack-admin. Check your"
+                    " clouds.yaml file or your envvars and try again.")
+
+
+class ClientTestCase(testtools.TestCase):
+
+    def setUp(self):
+        super(ClientTestCase, self).setUp()
+
+        if not self.auth_ref.project_scoped:
+            raise Exception("Could not run functional tests, which are "
+                            "run based on the scope provided for "
+                            "authentication. Please provide a project "
+                            "scope information.")
+
+    @property
+    def client(self):
+        if not hasattr(self, '_client'):
+            self._client = get_client(self.version)
+
+        return self._client
+
+    @property
+    def auth_ref(self):
+        return self.client.session.auth.get_auth_ref(self.client.session)
+
+    @property
+    def project_domain_id(self):
+        return self.auth_ref.project_domain_id
+
+    @property
+    def project_id(self):
+        return self.client.session.get_project_id()
+
+    @property
+    def user_id(self):
+        return self.client.session.get_user_id()
 
 
 class V3ClientTestCase(ClientTestCase):