docs: add set agent code sample (#866)

dialogflow/set-agent.js

@@ -0,0 +1,48 @@
+// 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';
+
+async function main(parentId, displayName) {
+  // [START dialogflow_set_agent_sample]
+  const {AgentsClient} = require('@google-cloud/dialogflow');
+
+  const parent = 'projects/' + parentId + '/locations/global';
+
+  const agent = {
+    parent: parent,
+    displayName: displayName,
+    defaultLanguageCode: 'en',
+    timeZone: 'America/Los_Angeles',
+  };
+
+  const client = new AgentsClient();
+
+  async function setAgent() {
+    const request = {
+      agent,
+    };
+
+    const [response] = await client.setAgent(request);
+    console.log(`response: ${JSON.stringify(response, null, 2)}`);
+  }
+  await setAgent();
+  // [END dialogflow_set_agent_sample]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+main(...process.argv.slice(2));

dialogflow/system-test/set-agent.test.js

@@ -0,0 +1,27 @@
+// 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');
+
+// We cannot test setAgent because Dialogflow ES can only have one agent
+// and if we create a agent it will delete the exisitng testing agent and
+// would cause all tests to fail
+describe('create agent', () => {
+  it('should create an intent', async () => {
+    assert.isTrue(true);
+  });
+});