diff --git a/packages/storage-plus/src/indexed_snapshot.rs b/packages/storage-plus/src/indexed_snapshot.rs
index 23c58a78d..f311ed2d5 100644
--- a/packages/storage-plus/src/indexed_snapshot.rs
+++ b/packages/storage-plus/src/indexed_snapshot.rs
@@ -990,4 +990,187 @@ mod test {
         assert_eq!(datas[0], marias[0].1);
         assert_eq!(datas[1], marias[1].1);
     }
+
+    #[test]
+    #[cfg(feature = "iterator")]
+    fn range_de_simple_string_key() {
+        let mut store = MockStorage::new();
+        let map = build_snapshot_map();
+
+        // save data
+        let (pks, datas) = save_data(&mut store, &map);
+
+        // let's try to iterate!
+        let all: StdResult<Vec<_>> = map.range_de(&store, None, None, Order::Ascending).collect();
+        let all = all.unwrap();
+        assert_eq!(
+            all,
+            pks.clone()
+                .into_iter()
+                .map(str::to_string)
+                .zip(datas.clone().into_iter())
+                .collect::<Vec<_>>()
+        );
+
+        // let's try to iterate over a range
+        let all: StdResult<Vec<_>> = map
+            .range_de(
+                &store,
+                Some(Bound::Inclusive(b"3".to_vec())),
+                None,
+                Order::Ascending,
+            )
+            .collect();
+        let all = all.unwrap();
+        assert_eq!(
+            all,
+            pks.into_iter()
+                .map(str::to_string)
+                .zip(datas.into_iter())
+                .rev()
+                .take(2)
+                .rev()
+                .collect::<Vec<_>>()
+        );
+    }
+
+    #[test]
+    #[cfg(feature = "iterator")]
+    fn prefix_de_simple_string_key() {
+        let mut store = MockStorage::new();
+        let map = build_snapshot_map();
+
+        // save data
+        let (pks, datas) = save_data(&mut store, &map);
+
+        // Let's prefix and iterate.
+        // This is similar to calling range() directly, but added here for completeness / prefix_de
+        // type checks
+        let all: StdResult<Vec<_>> = map
+            .prefix_de(())
+            .range_de(&store, None, None, Order::Ascending)
+            .collect();
+        let all = all.unwrap();
+        assert_eq!(
+            all,
+            pks.clone()
+                .into_iter()
+                .map(str::to_string)
+                .zip(datas.into_iter())
+                .collect::<Vec<_>>()
+        );
+    }
+
+    #[test]
+    #[cfg(feature = "iterator")]
+    fn sub_prefix_de_simple_string_key() {
+        let mut store = MockStorage::new();
+        let map = build_snapshot_map();
+
+        // save data
+        let (pks, datas) = save_data(&mut store, &map);
+
+        // Let's prefix and iterate.
+        // This is similar to calling range() directly, but added here for completeness / sub_prefix_de
+        // type checks
+        let all: StdResult<Vec<_>> = map
+            .sub_prefix_de(())
+            .range_de(&store, None, None, Order::Ascending)
+            .collect();
+        let all = all.unwrap();
+        assert_eq!(
+            all,
+            pks.clone()
+                .into_iter()
+                .map(str::to_string)
+                .zip(datas.into_iter())
+                .collect::<Vec<_>>()
+        );
+    }
+
+    #[test]
+    #[cfg(feature = "iterator")]
+    fn prefix_range_de_simple_key() {
+        let mut store = MockStorage::new();
+
+        let indexes = DataCompositeMultiIndex {
+            name_age: MultiIndex::new(
+                |d, k| index_triple(&d.name, d.age, k),
+                "data",
+                "data__name_age",
+            ),
+        };
+        let map =
+            IndexedSnapshotMap::new("data", "checks", "changes", Strategy::EveryBlock, indexes);
+
+        // save data
+        let data1 = Data {
+            name: "Maria".to_string(),
+            last_name: "".to_string(),
+            age: 42,
+        };
+        let pk1: (&str, &str) = ("1", "5627");
+        map.save(&mut store, pk1, &data1, 1).unwrap();
+
+        let data2 = Data {
+            name: "Juan".to_string(),
+            last_name: "Perez".to_string(),
+            age: 13,
+        };
+        let pk2: (&str, &str) = ("2", "5628");
+        map.save(&mut store, pk2, &data2, 1).unwrap();
+
+        let data3 = Data {
+            name: "Maria".to_string(),
+            last_name: "Young".to_string(),
+            age: 24,
+        };
+        let pk3: (&str, &str) = ("2", "5629");
+        map.save(&mut store, pk3, &data3, 1).unwrap();
+
+        let data4 = Data {
+            name: "Maria Luisa".to_string(),
+            last_name: "Bemberg".to_string(),
+            age: 43,
+        };
+        let pk4: (&str, &str) = ("3", "5630");
+        map.save(&mut store, pk4, &data4, 1).unwrap();
+
+        // let's try to iterate!
+        let result: StdResult<Vec<_>> = map
+            .prefix_range_de(
+                &store,
+                Some(PrefixBound::inclusive("2")),
+                None,
+                Order::Ascending,
+            )
+            .collect();
+        let result = result.unwrap();
+        assert_eq!(
+            result,
+            [
+                (("2".to_string(), "5628".to_string()), data2.clone()),
+                (("2".to_string(), "5629".to_string()), data3.clone()),
+                (("3".to_string(), "5630".to_string()), data4)
+            ]
+        );
+
+        // let's try to iterate over a range
+        let result: StdResult<Vec<_>> = map
+            .prefix_range_de(
+                &store,
+                Some(PrefixBound::inclusive("2")),
+                Some(PrefixBound::exclusive("3")),
+                Order::Ascending,
+            )
+            .collect();
+        let result = result.unwrap();
+        assert_eq!(
+            result,
+            [
+                (("2".to_string(), "5628".to_string()), data2),
+                (("2".to_string(), "5629".to_string()), data3),
+            ]
+        );
+    }
 }