docs(samples): adds model adaptation sample (#712)

Author: b-loved-dreamer

speech/system-test/modelAdaptation.test.js

@@ -0,0 +1,49 @@
+// 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.
+
+/* eslint-disable */
+
+'use strict';
+
+const { v4: uuidv4 } = require('uuid');
+const {assert} = require('chai');
+const {describe, it} = require('mocha');
+const cp = require('child_process');
+const speech = require('@google-cloud/speech').v1p1beta1;
+
+const execSync = cmd => cp.execSync(cmd, {encoding: 'utf-8'});
+const storageUri = 'gs://cloud-samples-tests/speech/brooklyn.flac';
+const text = 'how old is the Brooklyn Bridge';
+const adaptationClient = new speech.AdaptationClient();
+
+const projectId = process.env.GCLOUD_PROJECT;
+const location = 'us-west1'
+const customClassId = uuidv4().replace(/-/g, '').substring(0, 20);
+const phraseSetId = uuidv4().replace(/-/g, '').substring(0, 20);
+const classParent = `projects/${projectId}/locations/${location}/customClasses/${customClassId}`;
+const phraseParent = `projects/${projectId}/locations/${location}/phraseSets/${customClassId}`;
+
+describe('modelAdaptation', () => {
+    it('should run modelAdaptation', async () => {
+      const stdout = execSync(`node modelAdaptation.js ${projectId} ${location} ${storageUri} ${customClassId} ${phraseSetId}`)
+      assert.match(stdout, /Transcription:/ );
+    });
+    // Release used resources
+    cleanUp(classParent, phraseParent);
+});
+
+async function cleanUp(classParent, phraseParent) {
+    await adaptationClient.deleteCustomClass({ name: classParent });
+    await adaptationClient.deletePhraseSet({ name: phraseParent });
+}