diff --git a/source/libs/executor/test/timewindowTest.cpp b/source/libs/executor/test/timewindowTest.cpp
new file mode 100644
index 0000000000..6635c820fa
--- /dev/null
+++ b/source/libs/executor/test/timewindowTest.cpp
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <gtest/gtest.h>
+#include <iostream>
+#include "taos.h"
+#include "thash.h"
+#include "tsimplehash.h"
+#include "executor.h"
+#include "ttime.h"
+
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wwrite-strings"
+#pragma GCC diagnostic ignored "-Wunused-function"
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#pragma GCC diagnostic ignored "-Wsign-compare"
+
+namespace {
+SInterval createInterval(int64_t interval, int64_t sliding, int64_t offset, char intervalUnit, char slidingUnit,
+                         char offsetUnit, int8_t precision) {
+  SInterval v = {0};
+  v.interval = interval;
+  v.intervalUnit = intervalUnit;
+  v.sliding = sliding;
+  v.slidingUnit = slidingUnit;
+  v.offset = offset;
+  v.offsetUnit = offsetUnit;
+  v.precision = precision;
+  return v;
+}
+
+void printTimeWindow(STimeWindow* pWindow, int8_t precision, int64_t ts) {
+  char buf[64] = {0};
+  char bufs[64] = {0};
+  char bufe[64] = {0};
+
+  taosFormatUtcTime(buf, tListLen(buf), ts, precision);
+
+  taosFormatUtcTime(bufs, tListLen(bufs), pWindow->skey, precision);
+  taosFormatUtcTime(bufe, tListLen(bufe), pWindow->ekey, precision);
+
+  printf("%s [%s - %s]\n", buf, bufs, bufe);
+}
+}  // namespace
+
+TEST(testCase, timewindow_gen) {
+  // time window
+  osSetTimezone("UTC");
+
+  SInterval interval =
+      createInterval(10 * 86400 * 1000, 10 * 86400 * 1000, 0, 'd', 'd', 'd', TSDB_TIME_PRECISION_MILLI);
+
+  int64_t key = 1659312000L * 1000;  // 2022-8-1 00:00:00 // UTC+8  (ms)
+
+  STimeWindow w = {0};
+  getInitialStartTimeWindow(&interval, key, &w, true);
+  printTimeWindow(&w, interval.precision, key);
+
+  getNextTimeWindow(&interval, &w, TSDB_ORDER_ASC);
+  printf("next\n");
+  printTimeWindow(&w, interval.precision, key);
+
+  printf("---------------------------------------------------\n");
+  SInterval monthInterval =
+      createInterval(1, 1, 0, 'n', 'n', 'd', TSDB_TIME_PRECISION_MILLI);
+  getInitialStartTimeWindow(&monthInterval, key, &w, true);
+  printTimeWindow(&w, monthInterval.precision, key);
+
+  getNextTimeWindow(&monthInterval, &w, TSDB_ORDER_ASC);
+  printf("next\n");
+  printTimeWindow(&w, monthInterval.precision, key);
+
+  printf("----------------------------------------------------------\n");
+  SInterval slidingInterval = createInterval(1, 10*86400*1000, 0, 'n', 'd', 'd', TSDB_TIME_PRECISION_MILLI);
+  getInitialStartTimeWindow(&slidingInterval, key, &w, true);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printf("next\n");
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  getNextTimeWindow(&slidingInterval, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, slidingInterval.precision, key);
+
+  printf("----------------------------------------------------------\n");
+  SInterval calendar_interval_1n = createInterval(1, 1*86400*1000, 0, 'n', 'd', 'd', TSDB_TIME_PRECISION_MILLI);
+  int64_t k1 = 1664409600 * 1000L;
+  getInitialStartTimeWindow(&calendar_interval_1n, k1, &w, true);
+  printTimeWindow(&w, calendar_interval_1n.precision, k1);
+
+  printf("next\n");
+
+  getNextTimeWindow(&calendar_interval_1n, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, calendar_interval_1n.precision, key);
+
+  getNextTimeWindow(&calendar_interval_1n, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, calendar_interval_1n.precision, key);
+
+  getNextTimeWindow(&calendar_interval_1n, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, calendar_interval_1n.precision, key);
+
+  getNextTimeWindow(&calendar_interval_1n, &w, TSDB_ORDER_ASC);
+  printTimeWindow(&w, calendar_interval_1n.precision, key);
+
+
+  printf("----------------------------------------------------------\n");
+  SInterval calendar_interval_1d_sliding_1n = createInterval(1*86400*100L, 1, 0, 'd', 'n', 'd', TSDB_TIME_PRECISION_MILLI);
+
+}
+
+#pragma GCC diagnostic pop
\ No newline at end of file