add api integration test for indexSettings route

x-pack/test/api_integration/apis/maps/index.js

@@ -4,8 +4,18 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
-export default function({ loadTestFile }) {
+export default function({ loadTestFile, getService }) {
+  const esArchiver = getService('esArchiver');
+
   describe('Maps endpoints', () => {
-    loadTestFile(require.resolve('./migrations'));
+    before(async () => {
+      await esArchiver.loadIfNeeded('logstash_functional');
+    });
+
+    describe('', () => {
+      const esArchiver = getService('esArchiver');
+      loadTestFile(require.resolve('./index_settings'));
+      loadTestFile(require.resolve('./migrations'));
+    });
   });
 }

x-pack/test/api_integration/apis/maps/index_settings.js

@@ -0,0 +1,23 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import expect from '@kbn/expect';
+
+export default function({ getService }) {
+  const supertest = getService('supertest');
+
+  describe('index settings', () => {
+    it('should return index settings', async () => {
+      const resp = await supertest
+          .get(`/api/maps/indexSettings?indexPatternTitle=logstash*`)
+          .set('kbn-xsrf', 'kibana')
+          .expect(200);
+
+      expect(resp.body.maxResultWindow).to.be(10000);
+      expect(resp.body.maxInnerResultWindow).to.be(100);
+    });
+  });
+}