feat(storage): migrate quickstart sample and tests (#4264)

* feat(storage): introduce quickstart sample and test for migration

* test(storage): fix quickstart system test

---------

Co-authored-by: Jennifer Davis <sigje@google.com>

Author: angelcaamal

storage/quickstart.js

@@ -0,0 +1,51 @@
+// Copyright 2019 Google LLC
+//
+// 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.
+
+'use strict';
+
+function main(bucketName = 'my-new-bucket') {
+  // [START storage_quickstart]
+  // Imports the Google Cloud client library
+  const {Storage} = require('@google-cloud/storage');
+
+  // For more information on ways to initialize Storage, please see
+  // https://googleapis.dev/nodejs/storage/latest/Storage.html
+
+  // Creates a client using Application Default Credentials
+  const storage = new Storage();
+
+  // Creates a client from a Google service account key
+  // const storage = new Storage({keyFilename: 'key.json'});
+
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.
+   */
+  // The ID of your GCS bucket
+  // const bucketName = 'your-unique-bucket-name';
+
+  async function createBucket() {
+    try {
+      // Creates the new bucket
+      await storage.createBucket(bucketName);
+      console.log(`Bucket ${bucketName} created.`);
+    } catch (error) {
+      console.error('Error executing create bucket:', error.message || error);
+    }
+  }
+
+  createBucket();
+  // [END storage_quickstart]
+}
+
+main(...process.argv.slice(2));

storage/system-test/quickstart.test.js

@@ -0,0 +1,36 @@
+// Copyright 2019 Google LLC
+//
+// 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.
+
+'use strict';
+
+const {assert} = require('chai');
+const {after, it} = require('mocha');
+const cp = require('child_process');
+const uuid = require('uuid');
+const {Storage} = require('@google-cloud/storage');
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+
+const storage = new Storage();
+const bucketName = `nodejs-storage-samples-${uuid.v4()}`;
+
+after(async () => {
+  const bucket = storage.bucket(bucketName);
+  await bucket.delete({force: true}).catch(console.error);
+});
+
+it('should run the quickstart', async () => {
+  const stdout = execSync(`node quickstart ${bucketName}`);
+  assert.match(stdout, /Bucket .* created./);
+});