add FTR test for endpoint

src/core/server/i18n/routes/translations.ts

@@ -43,7 +43,7 @@ export const registerTranslationsRoute = (router: IRouter, locale: string) => {
       },
     },
     (ctx, req, res) => {
-      if (req.params.locale !== locale) {
+      if (req.params.locale.toLowerCase() !== locale.toLowerCase()) {
         return res.notFound({
           body: `Unknown locale: ${req.params.locale}`,
         });

test/api_integration/apis/core/compression.ts

@@ -0,0 +1,55 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you 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.
+ */
+import expect from '@kbn/expect';
+import { FtrProviderContext } from '../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const supertest = getService('supertest');
+
+  describe('compression', () => {
+    it(`uses compression when there isn't a referer`, async () => {
+      await supertest
+        .get('/app/kibana')
+        .set('accept-encoding', 'gzip')
+        .then((response) => {
+          expect(response.header).to.have.property('content-encoding', 'gzip');
+        });
+    });
+
+    it(`uses compression when there is a whitelisted referer`, async () => {
+      await supertest
+        .get('/app/kibana')
+        .set('accept-encoding', 'gzip')
+        .set('referer', 'https://some-host.com')
+        .then((response) => {
+          expect(response.header).to.have.property('content-encoding', 'gzip');
+        });
+    });
+
+    it(`doesn't use compression when there is a non-whitelisted referer`, async () => {
+      await supertest
+        .get('/app/kibana')
+        .set('accept-encoding', 'gzip')
+        .set('referer', 'https://other.some-host.com')
+        .then((response) => {
+          expect(response.header).not.to.have.property('content-encoding');
+        });
+    });
+  });
+}

test/api_integration/apis/core/index.ts

@@ -0,0 +1,27 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you 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.
+ */
+
+import { FtrProviderContext } from '../../ftr_provider_context';
+
+export default function ({ loadTestFile }: FtrProviderContext) {
+  describe('core', () => {
+    loadTestFile(require.resolve('./compression'));
+    loadTestFile(require.resolve('./translations'));
+  });
+}

test/api_integration/apis/core/translations.ts

@@ -0,0 +1,42 @@
+/*
+ * Licensed to Elasticsearch B.V. under one or more contributor
+ * license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright
+ * ownership. Elasticsearch B.V. licenses this file to you 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.
+ */
+import expect from '@kbn/expect';
+import { FtrProviderContext } from '../../ftr_provider_context';
+
+export default function ({ getService }: FtrProviderContext) {
+  const supertest = getService('supertest');
+
+  describe('translations', () => {
+    it(`returns the translations with the correct headers`, async () => {
+      await supertest.get('/translations/en.json').then((response) => {
+        expect(response.body.locale).to.eql('en');
+
+        expect(response.header).to.have.property('content-type', 'application/json; charset=utf-8');
+        expect(response.header).to.have.property('cache-control', 'must-revalidate');
+        expect(response.header).to.have.property('etag');
+      });
+    });
+
+    it(`returns a 404 when not using the correct locale`, async () => {
+      await supertest.get('/translations/foo.json').then((response) => {
+        expect(response.status).to.eql(404);
+      });
+    });
+  });
+}