Restructure cursor call to satisfy Black 26 chained-call wrap rule

Author: dmarulli

amiadapters/storage/snowflake.py

@@ -1005,16 +1005,18 @@ def calculate_end_of_backfill_range(
         # heuristic that got stuck on orgs whose leading edge had
         # below-threshold per-day read volume (legitimate ramp-up at the
         # start of vendor data).
-        result = conn.cursor().execute(
+        cursor = conn.cursor()
+        cursor.execute(
             """
             SELECT MIN(flowtime) FROM readings
             WHERE org_id = ? AND flowtime > ? AND flowtime < ?
             """,
             (org_id, min_date, max_date),
-        ).fetchall()
-        if not result or result[0][0] is None:
+        )
+        row = cursor.fetchone()
+        if row is None or row[0] is None:
             return max_date
-        return result[0][0]
+        return row[0]
 
 
 class SnowflakeMetersUniqueByDeviceIdCheck(BaseAMIDataQualityCheck):

test/amiadapters/storage/test_snowflake.py

@@ -475,7 +475,7 @@ def test_verify_no_duplicate_reads_and_return_oldest_flowtime_finds_oldest_flowt
 
     def test_calculate_end_of_backfill_range__returns_min_flowtime(self):
         expected_min = datetime.datetime(2024, 11, 29, 19, 0, tzinfo=pytz.UTC)
-        self.mock_cursor.execute.return_value.fetchall.return_value = [(expected_min,)]
+        self.mock_cursor.fetchone.return_value = (expected_min,)
 
         result = self.snowflake_sink.calculate_end_of_backfill_range(
             "some_org",
@@ -487,7 +487,7 @@ def test_calculate_end_of_backfill_range__returns_min_flowtime(self):
 
     def test_calculate_end_of_backfill_range__returns_max_date_when_no_readings(self):
         max_date = datetime.datetime(2026, 4, 23)
-        self.mock_cursor.execute.return_value.fetchall.return_value = [(None,)]
+        self.mock_cursor.fetchone.return_value = (None,)
 
         result = self.snowflake_sink.calculate_end_of_backfill_range(
             "some_org",