Cleanup App Engine samples and re-work tests. (#354)

Author: jmdobry

packages/google-cloud-dns/samples/README.md

@@ -14,14 +14,21 @@ anywhere in the world. Read more about [Google Cloud DNS][dns_docs].
 * [Setup](#setup)
 * [Samples](#samples)
   * [Zones](#zones)
+* [Running the tests](#running-the-tests)
 
 ## Setup
 
-1. Read [Prerequisites][prereq] and [How to run a sample][run] first.
-1. Install dependencies:
+1.  Read [Prerequisites][prereq] and [How to run a sample][run] first.
+1.  Install dependencies:
+
+    With `npm`:
 
         npm install
 
+    With `yarn`:
+
+        yarn install
+
 [prereq]: ../README.md#prerequisities
 [run]: ../README.md#how-to-run-a-sample
 
@@ -41,10 +48,25 @@ Options:
   --help  Show help                                                                                            [boolean]
 
 Examples:
-  node zones list  Lists all zones in the current project.
+  node zones.js list  Lists all zones in the current project.
 
 For more information, see https://cloud.google.com/dns/docs
 ```
 
 [zones_docs]: https://cloud.google.com/dns/docs
 [zones_code]: zones.js
+
+## Running the tests
+
+1.  Set the `GCLOUD_PROJECT` and `GOOGLE_APPLICATION_CREDENTIALS` environment
+    variables.
+
+1.  Run the tests:
+
+    With `npm`:
+
+        npm test
+
+    With `yarn`:
+
+        yarn test

packages/google-cloud-dns/samples/package.json

@@ -2,16 +2,33 @@
   "name": "nodejs-docs-samples-dns",
   "version": "0.0.1",
   "private": true,
-  "license": "Apache Version 2.0",
+  "license": "Apache-2.0",
   "author": "Google Inc.",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/GoogleCloudPlatform/nodejs-docs-samples.git"
+  },
+  "cloud": {
+    "requiresKeyFile": true,
+    "requiresProjectId": true
+  },
+  "engines": {
+    "node": ">=4.3.2"
+  },
   "scripts": {
-    "test": "cd ..; npm run st -- --verbose dns/system-test/*.test.js"
+    "lint": "samples lint",
+    "pretest": "npm run lint",
+    "system-test": "ava -T 1m --verbose system-test/*.test.js",
+    "test": "npm run system-test"
   },
   "dependencies": {
     "@google-cloud/dns": "0.5.0",
-    "yargs": "6.6.0"
+    "yargs": "7.1.0"
   },
-  "engines": {
-    "node": ">=4.3.2"
+  "devDependencies": {
+    "@google-cloud/nodejs-repo-tools": "1.3.1",
+    "ava": "0.19.1",
+    "proxyquire": "1.7.11",
+    "sinon": "2.1.0"
   }
 }