Add tests

x-pack/plugins/watcher/server/routes/api/indices/register_get_index_patterns_route.ts

@@ -39,8 +39,8 @@ export function registerGetIndexPatternsRoute({
         await finder.close();
 
         return response.ok({ body: responses });
-      } catch (e) {
-        return handleEsError({ error: e, response });
+      } catch (error) {
+        return handleEsError({ error, response });
       }
     })
   );

x-pack/test/api_integration/apis/index.ts

@@ -34,5 +34,6 @@ export default function ({ loadTestFile }: FtrProviderContext) {
     loadTestFile(require.resolve('./painless_lab'));
     loadTestFile(require.resolve('./file_upload'));
     loadTestFile(require.resolve('./ml'));
+    loadTestFile(require.resolve('./watcher'));
   });
 }

x-pack/test/api_integration/apis/watcher/index.ts

@@ -0,0 +1,14 @@
+/*
+ * 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 { FtrProviderContext } from '../../ftr_provider_context';
+
+export default function ({ loadTestFile }: FtrProviderContext) {
+  describe('Watcher', () => {
+    loadTestFile(require.resolve('./watcher'));
+  });
+}

x-pack/test/api_integration/apis/watcher/watcher.ts

@@ -0,0 +1,26 @@
+/*
+ * 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 expect from '@kbn/expect';
+
+export default function ({ getService }) {
+  const supertest = getService('supertest');
+
+  describe('watcher', () => {
+    describe('POST /api/watcher/indices/index_patterns', () => {
+      it('returns list of index patterns', async () => {
+        const response = await supertest
+          .get('/api/watcher/indices/index_patterns')
+          .set('kbn-xsrf', 'kibana')
+          .expect(200);
+
+        const expectedResponse = ['metrics-*', 'logs-*'];
+        expect(response.body).to.eql(expectedResponse);
+      });
+    });
+  });
+}