Added a stub Relevance Tuning page

x-pack/plugins/enterprise_search/public/applications/app_search/components/engine/engine_nav.tsx

@@ -174,8 +174,7 @@ export const EngineNav: React.FC = () => {
       )}
       {canManageEngineRelevanceTuning && (
         <SideNavLink
-          isExternal
-          to={getAppSearchUrl(generateEnginePath(ENGINE_RELEVANCE_TUNING_PATH))}
+          to={generateEnginePath(ENGINE_RELEVANCE_TUNING_PATH)}
           data-test-subj="EngineRelevanceTuningLink"
         >
           <EuiFlexGroup justifyContent="spaceBetween" gutterSize="none">

x-pack/plugins/enterprise_search/public/applications/app_search/components/engine/engine_router.tsx

@@ -23,7 +23,7 @@ import {
   // ENGINE_SCHEMA_PATH,
   // ENGINE_CRAWLER_PATH,
   // META_ENGINE_SOURCE_ENGINES_PATH,
-  // ENGINE_RELEVANCE_TUNING_PATH,
+  ENGINE_RELEVANCE_TUNING_PATH,
   // ENGINE_SYNONYMS_PATH,
   // ENGINE_CURATIONS_PATH,
   // ENGINE_RESULT_SETTINGS_PATH,
@@ -37,6 +37,7 @@ import { Loading } from '../../../shared/loading';
 import { EngineOverview } from '../engine_overview';
 import { AnalyticsRouter } from '../analytics';
 import { DocumentDetail, Documents } from '../documents';
+import { RelevanceTuning } from '../relevance_tuning';
 
 import { EngineLogic } from './';
 
@@ -95,6 +96,9 @@ export const EngineRouter: React.FC = () => {
       <Route path={ENGINE_DOCUMENTS_PATH}>
         <Documents engineBreadcrumb={engineBreadcrumb} />
       </Route>
+      <Route path={ENGINE_RELEVANCE_TUNING_PATH}>
+        <RelevanceTuning engineBreadcrumb={engineBreadcrumb} />
+      </Route>
       <Route>
         <SetPageChrome trail={[...engineBreadcrumb, OVERVIEW_TITLE]} />
         <EngineOverview />

x-pack/plugins/enterprise_search/public/applications/app_search/components/relevance_tuning/index.ts

@@ -5,3 +5,4 @@
  */
 
 export { RELEVANCE_TUNING_TITLE } from './constants';
+export { RelevanceTuning } from './relevance_tuning';

x-pack/plugins/enterprise_search/public/applications/app_search/components/relevance_tuning/relevance_tuning.test.tsx

@@ -0,0 +1,22 @@
+/*
+ * 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 React from 'react';
+
+import { shallow } from 'enzyme';
+
+import { RelevanceTuning } from './relevance_tuning';
+
+describe('RelevanceTuning', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('renders', () => {
+    const wrapper = shallow(<RelevanceTuning engineBreadcrumb={['test']} />);
+    expect(wrapper.isEmptyRender()).toBe(false);
+  });
+});

x-pack/plugins/enterprise_search/public/applications/app_search/components/relevance_tuning/relevance_tuning.tsx

@@ -0,0 +1,43 @@
+/*
+ * 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 React from 'react';
+import {
+  EuiPageHeader,
+  EuiPageHeaderSection,
+  EuiTitle,
+  EuiPageContentBody,
+  EuiPageContent,
+} from '@elastic/eui';
+
+import { SetAppSearchChrome as SetPageChrome } from '../../../shared/kibana_chrome';
+import { FlashMessages } from '../../../shared/flash_messages';
+
+import { RELEVANCE_TUNING_TITLE } from './constants';
+
+interface Props {
+  engineBreadcrumb: string[];
+}
+
+export const RelevanceTuning: React.FC<Props> = ({ engineBreadcrumb }) => {
+  return (
+    <>
+      <SetPageChrome trail={[...engineBreadcrumb, RELEVANCE_TUNING_TITLE]} />
+      <EuiPageHeader>
+        <EuiPageHeaderSection>
+          <EuiTitle size="l">
+            <h1>{RELEVANCE_TUNING_TITLE}</h1>
+          </EuiTitle>
+        </EuiPageHeaderSection>
+      </EuiPageHeader>
+      <EuiPageContent>
+        <EuiPageContentBody>
+          <FlashMessages />
+        </EuiPageContentBody>
+      </EuiPageContent>
+    </>
+  );
+};

x-pack/plugins/enterprise_search/public/applications/app_search/routes.ts

@@ -41,7 +41,7 @@ export const ENGINE_CRAWLER_PATH = `${ENGINE_PATH}/crawler`;
 
 export const META_ENGINE_SOURCE_ENGINES_PATH = `${ENGINE_PATH}/engines`;
 
-export const ENGINE_RELEVANCE_TUNING_PATH = `${ENGINE_PATH}/search-settings`;
+export const ENGINE_RELEVANCE_TUNING_PATH = `${ENGINE_PATH}/relevance-tuning`;
 export const ENGINE_SYNONYMS_PATH = `${ENGINE_PATH}/synonyms`;
 export const ENGINE_CURATIONS_PATH = `${ENGINE_PATH}/curations`;
 // TODO: Curations sub-pages