buildbucket: add longest_pending_time API

appengine/cr-buildbucket/test/api_test.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import datetime
 import json
 import os
 import sys
 
 REPO_ROOT_DIR = os.path.abspath(os.path.join(
@@ skipping 602 matching lines @@
   def test_invalid_input_error(self):
     self.error_test(errors.InvalidInputError, 'INVALID_INPUT')
 
   def test_lease_expired_error(self):
     self.error_test(errors.LeaseExpiredError, 'LEASE_EXPIRED')
 
   def test_auth_error(self):
     service.get.side_effect = auth.AuthorizationError
     self.call_api('get', {'id': 123}, status=403)
 
+  ############################# LONGEST_PENDING_TIME ###########################
+
+  def test_longest_pending_time(self):
+    service.longest_pending_time.return_value = datetime.timedelta(seconds=42)
+    req = {
+      'bucket': 'chromium',
+      'builder': 'x',
+    }
+    res = self.call_api('longest_pending_time', req).json_body
+    self.assertEqual(res['longest_pending_time_sec'], 42)
+    service.longest_pending_time.assert_called_once_with('chromium', 'x')
+
 
 class EndpointsApiTest(testing.EndpointsTestCase, ApiTests):
   api_service_cls = api.BuildBucketApi
 
   def setUp(self):
     super(EndpointsApiTest, self).setUp()
     self.setUpTests()
 
 
 class Webapp2ApiTest(test_case.Webapp2EndpointsTestCase, ApiTests):
   api_service_cls = api.BuildBucketApi
 
   def setUp(self):
     super(Webapp2ApiTest, self).setUp()
     self.setUpTests()