better elasticsearch client fixture

test/fixtures/elasticsearch.js

@@ -1,5 +1,17 @@
+import { uniqueId } from 'lodash';
+
 function Client() {}
-Client.prototype.index = function () {};
+Client.prototype.index = function (params) {
+  var shardCount = 2;
+  return Promise.resolve({
+    _index: params.index || 'index',
+    _type: params.type || 'type',
+    _id: uniqueId('testDoc'),
+    _version: 1,
+    _shards: { total: shardCount, successful: shardCount, failed: 0 },
+    created: true
+  });
+};
 
 export default {
   Client: Client

test/src/job.js

@@ -44,7 +44,7 @@ describe('Jobs', function () {
       type = 'type1';
       payload = { id: '123' };
       options = { timeout: 1234 };
-      sinon.stub(mockQueue.client, 'index');
+      sinon.spy(mockQueue.client, 'index');
     });
 
     it('should index the payload', function () {