adding distinct gaps buffered look back test

macros/tests/sequence_distinct_gaps_buffered_look_back.sql

@@ -0,0 +1,61 @@
+{% macro sequence_distinct_gaps_buffered_look_back(
+        table,
+        partition_by,
+        column,
+        delayed_column,
+        delayed_period
+    ) %}
+    {%- set partition_sql = partition_by | join(", ") -%}
+    {%- set previous_column = "prev_" ~ column -%}
+    WITH source AS (
+        SELECT
+            {{ partition_sql + "," if partition_sql }}
+            {{ column }},
+            LAG(
+                {{ column }},
+                1
+            ) over (
+                {{ "PARTITION BY " ~ partition_sql if partition_sql }}
+                ORDER BY
+                    {{ column }} ASC
+            ) AS {{ previous_column }},
+            LAG(
+                {{ delayed_column }},
+                1
+            ) over (
+                {{ "PARTITION BY " ~ partition_sql if partition_sql }}
+                ORDER BY
+                    {{ column }} ASC
+            ) AS {{ delayed_column }}
+        FROM
+            (
+                SELECT
+                    DISTINCT {{ column }},
+                    MAX(
+                        {{ delayed_column }}
+                    ) AS {{ delayed_column }}
+                FROM
+                    {{ table }}
+                GROUP BY
+                    {{ column }}
+            )
+    )
+SELECT
+    {{ partition_sql + "," if partition_sql }}
+    {{ previous_column }},
+    {{ column }},
+    {{ column }} - {{ previous_column }}
+    - 1 AS gap
+FROM
+    source
+WHERE
+    {{ column }} - {{ previous_column }} <> 1
+    AND {{ delayed_column }} < (
+        SELECT
+            MAX(
+                {{ delayed_column }}
+            )
+        FROM
+            {{ this }}
+    ) - INTERVAL '{{ delayed_period }}'
+{% endmacro %}

tests/algorand/silver/silver_algorand__transactions__block_id-assert_no_gap.sql

@@ -0,0 +1 @@
+{{ sequence_distinct_gaps_buffered_look_back(ref('silver_algorand__transactions'), [], "block_id", "_inserted_timestamp", "15 HOURS") }}