mapleFU commented on code in PR #1856:
URL: https://github.com/apache/kvrocks/pull/1856#discussion_r1372591209


##########
tests/cppunit/types/json_test.cc:
##########
@@ -262,7 +262,9 @@ TEST_F(RedisJsonTest, ArrLen) {
   ASSERT_EQ(res.size(), 1);
   ASSERT_EQ(res[0], 3);
   res.clear();
-  // 5. path is not found
+  // 5. key/path is not found
+  ASSERT_FALSE(json_->ArrLen("not_exists", "$.*", res).ok());
+  ASSERT_TRUE(res.empty());

Review Comment:
   We don't need to check it here. I think if the result is not `ok()`, the 
result can be undefined(Though it's empty here)



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