build: add a quickstart test

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

@@ -26,4 +26,4 @@
     "proxyquire": "^2.0.1",
     "uuid": "^9.0.0"
   }
-}
+}

packages/google-cloud-compute/samples/quickstart.js

@@ -0,0 +1,60 @@
+// Copyright 2021 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.
+
+/**
+ * Gets all instances present in a project, grouped by their zone.
+ *
+ * @param {string} projectId - ID or number of the project you want to use.
+ */
+function main(projectId) {
+  // [START compute_instances_list_all]
+  /**
+   * TODO(developer): Uncomment and replace these variables before running the sample.
+   */
+  // const projectId = 'YOUR_PROJECT_ID';
+
+  const compute = require('@google-cloud/compute');
+
+  // List all instances in the specified project.
+  async function listAllInstances() {
+    const instancesClient = new compute.InstancesClient();
+
+    //Use the `maxResults` parameter to limit the number of results that the API returns per response page.
+    const aggListRequest = instancesClient.aggregatedListAsync({
+      project: projectId,
+      maxResults: 5,
+    });
+
+    console.log('Instances found:');
+
+    // Despite using the `maxResults` parameter, you don't need to handle the pagination
+    // yourself. The returned object handles pagination automatically,
+    // requesting next pages as you iterate over the results.
+    for await (const [zone, instancesObject] of aggListRequest) {
+      const instances = instancesObject.instances;
+
+      if (instances && instances.length > 0) {
+        console.log(` ${zone}`);
+        for (const instance of instances) {
+          console.log(` - ${instance.name} (${instance.machineType})`);
+        }
+      }
+    }
+  }
+
+  listAllInstances();
+  // [END compute_instances_list_all]
+}
+
+main(...process.argv.slice(2));

packages/google-cloud-compute/samples/test/quickstart.test.js

@@ -0,0 +1,33 @@
+// Copyright 2021 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 compute = require('@google-cloud/compute');
+
+const {describe, it} = require('mocha');
+const cp = require('child_process');
+const {assert} = require('chai');
+
+const instancesClient = new compute.InstancesClient({fallback: 'rest'});
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+
+describe('samples', () => {
+  it('should print all instances list', async () => {
+    const projectId = await instancesClient.getProjectId();
+    const output = execSync(`node quickstart.js ${projectId}`);
+    assert.match(output, /Instances found:/);
+  });
+});