fix(test): block auth during public system tests (#249)

jkwlui · ofrobots · commit a3453de2d1b4 · 2018-10-19T15:56:35.000-07:00
diff --git a/package.json b/package.json
@@ -76,6 +76,7 @@
     "google-proto-files": "^0.17.0",
     "is": "^3.2.1",
     "lodash.merge": "^4.6.1",
+    "nock": "^10.0.1",
     "protobufjs": "^6.8.8",
     "pumpify": "^1.5.1",
     "snakecase-keys": "^1.2.0",
diff --git a/system-test/logging.js b/system-test/logging.js
@@ -22,12 +22,19 @@ const BigQuery = require('@google-cloud/bigquery');
 const exec = require('methmeth');
 const extend = require('extend');
 const is = require('is');
+const nock = require('nock');
 const PubSub = require('@google-cloud/pubsub');
 const {Storage} = require('@google-cloud/storage');
 const uuid = require('uuid');
 
 const {Logging} = require('../');
 
+// block all attempts to chat with the metadata server (kokoro runs on GCE)
+nock('http://metadata.google.internal')
+  .get(() => true)
+  .replyWithError({code: 'ENOTFOUND'})
+  .persist();
+
 describe('Logging', () => {
   let PROJECT_ID;
   const TESTS_PREFIX = 'gcloud-logging-test';
