test: add a sample test (#143)

dataproc/package.json

@@ -2,18 +2,21 @@
   "name": "nodejs-docs-samples-dataproc",
   "license": "Apache-2.0",
   "author": "Google Inc.",
+  "files": ["*.js"],
   "engines": {
     "node": ">=8"
   },
   "repository": "googleapis/nodejs-dataproc",
   "private": true,
   "scripts": {
-    "test": "echo no tests 👻"
+    "test": "mocha system-test --timeout 60000"
   },
   "dependencies": {
     "@google-cloud/dataproc": "^0.3.0"
   },
   "devDependencies": {
-    "@google-cloud/nodejs-repo-tools": "^3.0.0"
+    "chai": "^4.2.0",
+    "execa": "^1.0.0",
+    "mocha": "^5.2.0"
   }
 }

dataproc/quickstart.js

@@ -14,19 +14,10 @@
  */
 
 'use strict';
-async function main() {
-  // [START dataproc_quickstart]
-  if (
-    !process.env.GCLOUD_PROJECT ||
-    !process.env.GOOGLE_APPLICATION_CREDENTIALS
-  ) {
-    throw new Error(
-      'Usage: GCLOUD_PROJECT=<project_id> GOOGLE_APPLICATION_CREDENTIALS=<path to json key> node #{$0}'
-    );
-  }
 
+// [START dataproc_quickstart]
+async function quickstart() {
   const dataproc = require('@google-cloud/dataproc');
-
   const client = new dataproc.v1.ClusterControllerClient({
     // optional auth parameters.
   });
@@ -35,15 +26,12 @@ async function main() {
 
   // Iterate over all elements.
   const region = 'global';
-  const request = {
-    projectId: projectId,
-    region: region,
-  };
+  const request = {projectId, region};
 
   const [resources] = await client.listClusters(request);
   console.log('Total resources:', resources.length);
-  for (let i = 0; i < resources.length; i += 1) {
-    console.log(resources[i]);
+  for (const resource of resources) {
+    console.log(resource);
   }
 
   let nextRequest = request;
@@ -57,15 +45,15 @@ async function main() {
     nextRequest = responses[1];
     // The actual response object, if necessary.
     // const rawResponse = responses[2];
-    for (let i = 0; i < resources.length; i += 1) {
-      console.log(resources[i]);
+    for (const resource of resources) {
+      console.log(resource);
     }
   } while (nextRequest);
 
   client.listClustersStream(request).on('data', element => {
     console.log(element);
   });
-  // [END dataproc_quickstart]
 }
+// [END dataproc_quickstart]
 
-main().catch(console.error);
+quickstart().catch(console.error);

dataproc/system-test/.eslintrc.yml

@@ -1,5 +1,3 @@
 ---
-rules:
-  node/no-unpublished-require: off
-  node/no-unsupported-features: off
-  no-empty: off
+env:
+  mocha: true

dataproc/system-test/quickstart.test.js

@@ -0,0 +1,24 @@
+/**
+ * Copyright 2017, Google, Inc.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const {assert} = require('chai');
+const execa = require('execa');
+
+describe('dataproc samples', () => {
+  it('should run the quickstart', async () => {
+    const {stdout} = await execa.shell('node quickstart');
+    assert.match(stdout, /Total resources:/);
+  });
+});