Add quota_set detail test for Nova v3 API

"get quota_set detail" API has been added since Nova v3 API, and the
returns the following body as a response:

  {"quota_set": {
     "id": "e9f3b1c3952e49369d9a02b6bc495cae",
     "instances": {"reserved": 0, "limit": 10, "in_use": 1},
     "cores": {"reserved": 0, "limit": 20, "in_use": 1},
     "ram": {"reserved": 0, "limit": 51200, "in_use": 64},
     ...
  }}

This patch adds a test for this API.

Partially implements blueprint nova-v3-api-tests

Change-Id: I5eb6f5e14065aeb7f56fb5a6a1095786773d167a
diff --git a/tempest/api/compute/v3/admin/test_quotas.py b/tempest/api/compute/v3/admin/test_quotas.py
index ccb9d8e..d438a87 100644
--- a/tempest/api/compute/v3/admin/test_quotas.py
+++ b/tempest/api/compute/v3/admin/test_quotas.py
@@ -56,6 +56,22 @@
                          sorted(quota_set.keys()))
         self.assertEqual(quota_set['id'], self.demo_tenant_id)
 
+    @test.attr(type='smoke')
+    def test_get_quota_set_detail(self):
+        # Admin can get the detail of resource quota set for a tenant
+        expected_quota_set = self.default_quota_set | set(['id'])
+        expected_detail = {'reserved', 'limit', 'in_use'}
+        resp, quota_set = self.adm_client.get_quota_set_detail(
+            self.demo_tenant_id)
+        self.assertEqual(200, resp.status)
+        self.assertEqual(sorted(expected_quota_set), sorted(quota_set.keys()))
+        self.assertEqual(quota_set['id'], self.demo_tenant_id)
+        for quota in quota_set:
+            if quota == 'id':
+                continue
+            self.assertEqual(sorted(expected_detail),
+                             sorted(quota_set[quota].keys()))
+
     @test.attr(type='gate')
     def test_update_all_quota_resources_for_tenant(self):
         # Admin can update all the resource quota limits for a tenant
diff --git a/tempest/services/compute/v3/json/quotas_client.py b/tempest/services/compute/v3/json/quotas_client.py
index 1ec8651..59a9389 100644
--- a/tempest/services/compute/v3/json/quotas_client.py
+++ b/tempest/services/compute/v3/json/quotas_client.py
@@ -35,6 +35,14 @@
         body = json.loads(body)
         return resp, body['quota_set']
 
+    def get_quota_set_detail(self, tenant_id):
+        """Get the quota set detail for a tenant."""
+
+        url = 'os-quota-sets/%s/detail' % str(tenant_id)
+        resp, body = self.get(url)
+        body = json.loads(body)
+        return resp, body['quota_set']
+
     def get_default_quota_set(self, tenant_id):
         """List the default quota set for a tenant."""