Fix: Don't expand intervals when recording an empty backfill

Author: izeigerman

sqlmesh/core/plan/evaluator.py

@@ -197,7 +197,9 @@ def _backfill(
         if plan.empty_backfill:
             intervals_to_add = []
             for snapshot in snapshots_by_name.values():
-                intervals = [snapshot.inclusive_exclusive(plan.start, plan.end, strict=False)]
+                intervals = [
+                    snapshot.inclusive_exclusive(plan.start, plan.end, strict=False, expand=False)
+                ]
                 is_deployable = deployability_index.is_deployable(snapshot)
                 intervals_to_add.append(
                     SnapshotIntervals(

tests/core/test_integration.py

@@ -3874,7 +3874,7 @@ def test_create_environment_no_changes_with_selector(init_and_plan_context: t.Ca
 
 
 @time_machine.travel("2023-01-08 15:00:00 UTC")
-def test_empty_bacfkill(init_and_plan_context: t.Callable):
+def test_empty_backfill(init_and_plan_context: t.Callable):
     context, _ = init_and_plan_context("examples/sushi")
 
     plan = context.plan_builder("prod", skip_tests=True, empty_backfill=True).build()
@@ -3895,6 +3895,10 @@ def test_empty_bacfkill(init_and_plan_context: t.Callable):
     assert not plan.has_changes
     assert not plan.missing_intervals
 
+    snapshots = plan.snapshots
+    for snapshot in snapshots.values():
+        assert snapshot.intervals[-1][1] <= to_timestamp("2023-01-08")
+
 
 @time_machine.travel("2023-01-08 15:00:00 UTC")
 def test_dbt_requirements(sushi_dbt_context: Context):