docs: add create agent code sample (#163)

README.md

@@ -139,6 +139,7 @@ Samples are in the [`samples/`](https://github.com/googleapis/nodejs-dialogflow-
 
 | Sample                      | Source Code                       | Try it |
 | --------------------------- | --------------------------------- | ------ |
+| Create-agent | [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/create-agent.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-dialogflow-cx&page=editor&open_in_editor=samples/create-agent.js,samples/README.md) |
 | Detect-intent-audio | [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/detect-intent-audio.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-dialogflow-cx&page=editor&open_in_editor=samples/detect-intent-audio.js,samples/README.md) |
 | Detect-intent-streaming | [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/detect-intent-streaming.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-dialogflow-cx&page=editor&open_in_editor=samples/detect-intent-streaming.js,samples/README.md) |
 | Detect-intent-text | [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/detect-intent-text.js) | [![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-dialogflow-cx&page=editor&open_in_editor=samples/detect-intent-text.js,samples/README.md) |

samples/README.md

@@ -12,6 +12,7 @@
 
 * [Before you begin](#before-you-begin)
 * [Samples](#samples)
+  * [Create-agent](#create-agent)
   * [Detect-intent-audio](#detect-intent-audio)
   * [Detect-intent-streaming](#detect-intent-streaming)
   * [Detect-intent-text](#detect-intent-text)
@@ -33,6 +34,23 @@ Before running the samples, make sure you've followed the steps outlined in
 
 
 
+### Create-agent
+
+View the [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/create-agent.js).
+
+[![Open in Cloud Shell][shell_img]](https://console.cloud.google.com/cloudshell/open?git_repo=https://github.com/googleapis/nodejs-dialogflow-cx&page=editor&open_in_editor=samples/create-agent.js,samples/README.md)
+
+__Usage:__
+
+
+`node samples/create-agent.js`
+
+
+-----
+
+
+
+
 ### Detect-intent-audio
 
 View the [source code](https://github.com/googleapis/nodejs-dialogflow-cx/blob/main/samples/detect-intent-audio.js).

samples/create-agent.js

@@ -0,0 +1,53 @@
+// 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
+//
+//     https://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';
+
+process.env.DEBUG = 'dialogflow:debug'; // enables lib debugging statements
+
+async function main(projectId, displayName) {
+  // [START dialogflow_set_agent_sample]
+
+  const parent = 'projects/' + projectId + '/locations/global';
+
+  const api_endpoint = 'global-dialogflow.googleapis.com:443';
+
+  const agent = {
+    displayName: displayName,
+    defaultLanguageCode: 'en',
+    timeZone: 'America/Los_Angeles',
+  };
+
+  const {AgentsClient} = require('@google-cloud/dialogflow-cx');
+
+  const client = new AgentsClient({api_endpoint: api_endpoint});
+
+  async function setAgentSample() {
+    const request = {
+      agent,
+      parent,
+    };
+
+    const [response] = await client.createAgent(request);
+    console.log(`response: ${JSON.stringify(response, null, 2)}`);
+  }
+  await setAgentSample();
+  // [END dialogflow_set_agent_sample]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+main(...process.argv.slice(2));

samples/test/create-agent.test.js

@@ -0,0 +1,32 @@
+// 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 {assert} = require('chai');
+const {describe, it} = require('mocha');
+const uuid = require('uuid');
+const execSync = require('child_process').execSync;
+const exec = cmd => execSync(cmd, {encoding: 'utf8'});
+
+describe('create agent', () => {
+  const cmd = 'node create-agent.js';
+  const agentId = `temp_agent_${uuid.v4().split('-')[0]}`;
+  const projectId = process.env.GCLOUD_PROJECT;
+
+  it('should create agent', async () => {
+    const output = exec(`${cmd} ${projectId} ${agentId}`);
+    assert.include(output, agentId);
+  });
+});