Process queue items by time window

core/pkg/task/queue_test.go

@@ -131,3 +131,29 @@ func TestEnqueueKeyError(t *testing.T) {
 	// shutdown queue before exit
 	q.Shutdown()
 }
+
+func TestSkipEnqueue(t *testing.T) {
+	// initialize result
+	atomic.StoreUint32(&sr, 0)
+	q := NewCustomTaskQueue(mockSynFn, mockKeyFn)
+	stopCh := make(chan struct{})
+	// run queue
+	go q.Run(time.Second, stopCh)
+	// mock object whichi will be enqueue
+	mo := mockEnqueueObj{
+		k: "testKey",
+		v: "testValue",
+	}
+	q.Enqueue(mo)
+	q.Enqueue(mo)
+	q.Enqueue(mo)
+	q.Enqueue(mo)
+	// wait for 'mockSynFn'
+	time.Sleep(time.Millisecond * 10)
+	if atomic.LoadUint32(&sr) != 1 {
+		t.Errorf("sr should be 1, but is %d", sr)
+	}
+
+	// shutdown queue before exit
+	q.Shutdown()
+}