From a10bc6806c856022a60c0c373d8c329a26ebd501 Mon Sep 17 00:00:00 2001
From: breken-ai <312387581+breken-ai@users.noreply.github.com>
Date: Fri, 25 Sep 2026 21:53:03 -0700
Subject: [PATCH 1/2] fix: apply seasonality case-insensitively like its
 validation

validate_seasonality lowercases the value before checking it, so
'Day_Of_Week' is accepted, but get_seasonality returned it unchanged and
get_anomaly_scores_query / get_days_back compare against lowercase names.
The test then ran with no seasonality at all.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
---
 .../tests/test_volume_anomalies.py            | 21 +++++++++++++++++++
 .../test_configuration/get_seasonality.sql    |  2 +-
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/integration_tests/tests/test_volume_anomalies.py b/integration_tests/tests/test_volume_anomalies.py
index 3ce4a865e..95e416bb4 100644
--- a/integration_tests/tests/test_volume_anomalies.py
+++ b/integration_tests/tests/test_volume_anomalies.py
@@ -200,6 +200,27 @@ def test_volume_anomalies_with_seasonality(test_id: str, dbt_project: DbtProject
     assert test_result["status"] == "fail"
 
 
+def test_volume_anomalies_with_seasonality_is_case_insensitive(
+    test_id: str, dbt_project: DbtProject
+):
+    # Seasonality values are validated case-insensitively, so they must also be
+    # applied case-insensitively instead of being silently ignored.
+    utc_today = datetime.utcnow().date()
+    dates = generate_dates(
+        base_date=utc_today - timedelta(days=1),
+        step=timedelta(weeks=1),
+        days_back=7 * 14,
+    )
+    data = [
+        {TIMESTAMP_COLUMN: cur_date.strftime(DATE_FORMAT)}
+        for cur_date in dates
+        if cur_date < utc_today - timedelta(weeks=1)
+    ]
+    test_args = {**DBT_TEST_ARGS, "seasonality": "Day_Of_Week"}
+    test_result = dbt_project.test(test_id, DBT_TEST_NAME, test_args, data=data)
+    assert test_result["status"] == "fail"
+
+
 def test_volume_anomalies_with_sensitivity(test_id: str, dbt_project: DbtProject):
     utc_today = datetime.utcnow().date()
     data = [
diff --git a/macros/edr/tests/test_configuration/get_seasonality.sql b/macros/edr/tests/test_configuration/get_seasonality.sql
index b16161ab5..ac24dccc4 100644
--- a/macros/edr/tests/test_configuration/get_seasonality.sql
+++ b/macros/edr/tests/test_configuration/get_seasonality.sql
@@ -7,7 +7,7 @@
     {%- do elementary.validate_seasonality(
         seasonality, time_bucket, timestamp_column
     ) -%}
-    {%- if seasonality %} {{ return(seasonality) }} {%- endif %}
+    {%- if seasonality %} {{ return(seasonality | lower) }} {%- endif %}
     {{ return(none) }}
 {% endmacro %}
 

From d09833bebbc673d292cb79e08e0325752897ac71 Mon Sep 17 00:00:00 2001
From: breken-ai <312387581+breken-ai@users.noreply.github.com>
Date: Sun, 27 Sep 2026 12:57:23 -0700
Subject: [PATCH 2/2] test: make seasonality case test adapter portable

Signed-off-by: breken-ai <312387581+breken-ai@users.noreply.github.com>
---
 .../tests/test_anomaly_test_configuration.py  |  5 +++--
 .../tests/test_volume_anomalies.py            | 21 -------------------
 2 files changed, 3 insertions(+), 23 deletions(-)

diff --git a/integration_tests/tests/test_anomaly_test_configuration.py b/integration_tests/tests/test_anomaly_test_configuration.py
index 89fcd3291..38d5b25ab 100644
--- a/integration_tests/tests/test_anomaly_test_configuration.py
+++ b/integration_tests/tests/test_anomaly_test_configuration.py
@@ -32,7 +32,7 @@ class ParamValues(Generic[T]):
         {"count": 1, "period": "day"},
     ),
     "backfill_days": ParamValues(30, 60, 90),
-    "seasonality": ParamValues("day_of_week", "hour_of_day", "day_of_week"),
+    "seasonality": ParamValues("day_of_week", "hour_of_day", "Day_Of_Week"),
     "event_timestamp_column": ParamValues(
         "vars.updated_at", "model.updated_at", "test.updated_at"
     ),
@@ -67,7 +67,8 @@ class ParamValues(Generic[T]):
 
 def _get_expected_adapted_config(values_type: Literal["vars", "model", "test"]):
     def get_value(key: str):
-        return PARAM_VALUES[key].__dict__[values_type]
+        value = PARAM_VALUES[key].__dict__[values_type]
+        return value.lower() if key == "seasonality" and value else value
 
     days_back_multiplier = (
         7 if get_value("seasonality") in ["day_of_week", "hour_of_week"] else 1
diff --git a/integration_tests/tests/test_volume_anomalies.py b/integration_tests/tests/test_volume_anomalies.py
index 95e416bb4..3ce4a865e 100644
--- a/integration_tests/tests/test_volume_anomalies.py
+++ b/integration_tests/tests/test_volume_anomalies.py
@@ -200,27 +200,6 @@ def test_volume_anomalies_with_seasonality(test_id: str, dbt_project: DbtProject
     assert test_result["status"] == "fail"
 
 
-def test_volume_anomalies_with_seasonality_is_case_insensitive(
-    test_id: str, dbt_project: DbtProject
-):
-    # Seasonality values are validated case-insensitively, so they must also be
-    # applied case-insensitively instead of being silently ignored.
-    utc_today = datetime.utcnow().date()
-    dates = generate_dates(
-        base_date=utc_today - timedelta(days=1),
-        step=timedelta(weeks=1),
-        days_back=7 * 14,
-    )
-    data = [
-        {TIMESTAMP_COLUMN: cur_date.strftime(DATE_FORMAT)}
-        for cur_date in dates
-        if cur_date < utc_today - timedelta(weeks=1)
-    ]
-    test_args = {**DBT_TEST_ARGS, "seasonality": "Day_Of_Week"}
-    test_result = dbt_project.test(test_id, DBT_TEST_NAME, test_args, data=data)
-    assert test_result["status"] == "fail"
-
-
 def test_volume_anomalies_with_sensitivity(test_id: str, dbt_project: DbtProject):
     utc_today = datetime.utcnow().date()
     data = [