Tenants API Client (Review).

1. Added a tenants api client and related mocked tests.
 2. Moved all mocked tests to a metatests package.
 3. Fixed string formatting issues in tenants api client.
 4. Renamed tenant-api to tenant_api in the metatests package.
 5. Fixed issues as per reviewer comments.
 6. Fixed a bug in a user model for users-api.
 7. Refactored a tenant responses model for tenants-api.

Change-Id: I578867a4bcafb635fe9b38a3238385569ce2fe77

cloudcafe/identity/v2_0/tenants_api/client.py

@@ -230,7 +230,14 @@ class TenantsAPI_Client(AutoMarshallingRestClient):
     def get_users_for_tenant(self, tenant_id, requestslib_kwargs=None):
         """
         @summary: Returns all the users that a given tenant has.
-         Maps to /tenants/{tenant_id}/users.
+        Maps to /tenants/{tenant_id}/users.
+        @summary: Returns all the users that a tenant has.
+        Maps to /tenants/{tenant_id}/users.
+        @summary: Returns all the users that a tenant has.
+        Maps to /tenants/{tenant_id}/users.
+        Maps to /tenants/{tenant_id}/users.
+        @summary: Returns all the users that a tenant has.
+        Maps to /tenants/{tenant_id}/users.
         @param tenant_id: The ID for the tenant
         @type tenant_id: String
         @return: server_response

cloudcafe/identity/v2_0/tenants_api/models/responses/tenant.py

@@ -21,13 +21,12 @@ from cloudcafe.identity.v2_0.tokens_api.models.base import \
 
 
 class Tenants(BaseIdentityListModel):
-
     def __init__(self, tenants=None):
         """
         An object that represents a tenants response object.
         """
         super(Tenants, self).__init__()
-        self.extend(tenants)
+        self.extend(tenants or [])
 
     @classmethod
     def _json_to_obj(cls, serialized_str):
@@ -55,7 +54,6 @@ class Tenants(BaseIdentityListModel):
 
 
 class Tenant(BaseIdentityModel):
-
     def __init__(self, id_=None, name=None, description=None,
                  enabled=None, created=None):
         """
@@ -99,10 +97,9 @@ class Tenant(BaseIdentityModel):
 
 
 class TenantsLinks(BaseIdentityListModel):
-
     def __init__(self, tenant_link=None):
         super(TenantsLinks, self).__init__()
-        self.extend(tenant_link)
+        self.extend(tenant_link or [])
 
     @classmethod
     def _dict_to_obj(cls, json_dict):
@@ -110,7 +107,7 @@ class TenantsLinks(BaseIdentityListModel):
 
     @classmethod
     def _list_to_obj(cls, tenant_links_list_dict):
-        tenant_links = TenantsLinks([])
+        tenant_links = TenantsLinks()
         for tenant_link_dict in tenant_links_list_dict:
             tenant_link = TenantsLink._dict_to_obj(tenant_link_dict)
             tenant_links.append(tenant_link)
@@ -124,7 +121,6 @@ class TenantsLinks(BaseIdentityListModel):
 
 
 class TenantsLink(BaseIdentityModel):
-
     def __init__(self, href=None, type_=None, rel=None):
         self.href = href
         self.type = type_