docs: add filter code sample (#179)

Author: galz10

dialogflow-cx/list-testcase-results.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
+//
+//     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(projectId, agentId, testId, location) {
+  /**
+   * TODO(developer): Uncomment these variables before running the sample.
+   */
+  // const projectId = 'my-project';
+  // const agentId = 'my-agent';
+  // const testId = 'my-flow';
+  // const location = 'global';
+
+  // [START dialogflow_cx_list_testcase_sample]
+  const parent = `projects/${projectId}/locations/${location}/agents/${agentId}/testCases/${testId}`;
+
+  const {TestCasesClient} = require('@google-cloud/dialogflow-cx');
+
+  const client = new TestCasesClient({
+    apiEndpoint: 'global-dialogflow.googleapis.com',
+  });
+  const req = {
+    parent,
+    filter: 'environment=draft',
+  };
+
+  const res = await client.listTestCaseResults(req);
+
+  console.log(res);
+  // [END dialogflow_cx_list_testcase_sample]
+}
+
+process.on('unhandledRejection', err => {
+  console.error(err.message);
+  process.exitCode = 1;
+});
+main(...process.argv.slice(2));

dialogflow-cx/test/list_testcase-results.test.js

@@ -0,0 +1,35 @@
+// 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 execSync = require('child_process').execSync;
+const exec = cmd => execSync(cmd, {encoding: 'utf8'});
+const dialogflow = require('@google-cloud/dialogflow-cx');
+
+describe('Test filtering results', async () => {
+  const cmd = 'node list-testcase-results.js';
+  const agentId = process.env.AGENT_ID;
+  const testId = process.env.TEST_ID;
+  const location = 'global';
+  const agentClient = new dialogflow.AgentsClient();
+  const projectId = await agentClient.getProjectId();
+
+  it('should return filtered test results', async () => {
+    const output = exec(`${cmd} ${projectId} ${agentId} ${testId} ${location}`);
+    assert.include(output, testId);
+  });
+});