Update the test to create a mock workflow event data that will throw instead of manipulating a frozen dataset

Author: saponifi3d

tests/sentry/notifications/notification_action/test_metric_alert_registry_handlers.py

@@ -8,6 +8,8 @@
 import pytest
 from django.utils import timezone
 
+from sentry.db.models import NodeData
+from sentry.eventstore.models import GroupEvent
 from sentry.incidents.grouptype import MetricIssue, MetricIssueEvidenceData
 from sentry.incidents.models.alert_rule import (
     AlertRuleDetectionType,
@@ -267,7 +269,10 @@ def setUp(self):
         self.handler = TestHandler()
 
     def test_missing_occurrence_raises_value_error(self):
-        self.event_data.event._occurrence = None
+        self.event_data = WorkflowEventData(
+            event=GroupEvent(self.project.id, "test", self.group, NodeData("test-id")),
+            group=self.group,
+        )
 
         with pytest.raises(ValueError):
             self.handler.invoke_legacy_registry(self.event_data, self.action, self.detector)