create a mock queue

test/fixtures/queue.js

@@ -0,0 +1,13 @@
+import events from 'events';
+
+class MockQueue extends events.EventEmitter {
+  constructor() {
+    super();
+  }
+
+  setClient(client) {
+    this.client = client;
+  }
+}
+
+export default MockQueue;