Add adapter tests for date_spine macro

tests/adapter/dbt/tests/adapter/utils/fixture_date_spine.py

@@ -0,0 +1,43 @@
+# If date_spine works properly, there should be no `null` values in the resulting model
+
+models__test_date_spine_sql = """
+with generated_dates as (
+    {{ date_spine("day", "'2023-09-01'::date", "'2023-09-10'::date") }}
+), expected_dates as (
+    select '2023-09-01'::date as expected
+    union all
+    select '2023-09-02'::date as expected
+    union all
+    select '2023-09-03'::date as expected
+    union all
+    select '2023-09-04'::date as expected
+    union all
+    select '2023-09-05'::date as expected
+    union all
+    select '2023-09-06'::date as expected
+    union all
+    select '2023-09-07'::date as expected
+    union all
+    select '2023-09-08'::date as expected
+    union all
+    select '2023-09-09'::date as expected
+), joined as (
+    select
+        generated_dates.date_day,
+        expected_dates.expected
+    from generated_dates
+    left join expected_dates on generated_dates.date_day = expected_dates.expected
+)
+
+SELECT * from joined
+"""
+
+models__test_date_spine_yml = """
+version: 2
+models:
+  - name: test_date_spine
+    tests:
+      - assert_equal:
+          actual: date_day
+          expected: expected
+"""

tests/adapter/dbt/tests/adapter/utils/test_date_spine.py

@@ -0,0 +1,21 @@
+import pytest
+from dbt.tests.adapter.utils.base_utils import BaseUtils
+from dbt.tests.adapter.utils.fixture_date_spine import (
+    models__test_date_spine_sql,
+    models__test_date_spine_yml,
+)
+
+
+class BaseDateSpine(BaseUtils):
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "test_date_spine.yml": models__test_date_spine_yml,
+            "test_date_spine.sql": self.interpolate_macro_namespace(
+                models__test_date_spine_sql, "date_spine"
+            ),
+        }
+
+
+class TestDateSpine(BaseDateSpine):
+    pass