Add api test for suggestions

x-pack/plugins/apm/server/routes/suggestions/get_suggestions_with_terms_aggregation.ts

@@ -23,7 +23,7 @@ export async function getSuggestionsWithTermsAggregation({
   fieldName: string;
   fieldValue: string;
   searchAggregatedTransactions: boolean;
-  serviceName: string;
+  serviceName?: string;
   setup: Setup;
   size: number;
   start: number;

x-pack/test/apm_api_integration/tests/suggestions/generate_data.ts

@@ -0,0 +1,77 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+import { apm, timerange } from '@kbn/apm-synthtrace';
+import type { ApmSynthtraceEsClient } from '@kbn/apm-synthtrace';
+import { times } from 'lodash';
+
+export async function generateData({
+  synthtraceEsClient,
+  start,
+  end,
+}: {
+  synthtraceEsClient: ApmSynthtraceEsClient;
+  start: number;
+  end: number;
+}) {
+  const services = times(5).flatMap((serviceId) => {
+    return ['go', 'java'].flatMap((agentName) => {
+      return ['production', 'development', 'staging'].flatMap((environment) => {
+        return times(5).flatMap((envId) => {
+          const service = apm
+            .service({
+              name: `${agentName}-${serviceId}`,
+              environment: `${environment}-${envId}`,
+              agentName,
+            })
+            .instance('instance-a');
+
+          return service;
+        });
+      });
+    });
+  });
+
+  const transactionNames = [
+    'GET /api/product/:id',
+    'PUT /api/product/:id',
+    'GET /api/user/:id',
+    'PUT /api/user/:id',
+  ];
+
+  const phpService = apm
+    .service({
+      name: `custom-php-service`,
+      environment: `custom-php-environment`,
+      agentName: 'php',
+    })
+    .instance('instance-a');
+
+  const docs = timerange(start, end)
+    .ratePerMinute(1)
+    .generator((timestamp) => {
+      const autoGeneratedDocs = services.flatMap((service) => {
+        return transactionNames.flatMap((transactionName) => {
+          return service
+            .transaction({ transactionName, transactionType: 'my-custom-type' })
+            .timestamp(timestamp)
+            .duration(1000);
+        });
+      });
+
+      const customDoc = phpService
+        .transaction({
+          transactionName: 'GET /api/php/memory',
+          transactionType: 'custom-php-type',
+        })
+        .timestamp(timestamp)
+        .duration(1000);
+
+      return [...autoGeneratedDocs, customDoc];
+    });
+
+  return await synthtraceEsClient.index(docs);
+}