record soft deletion in audit log for applications and environments

tests/models/test_application.py

@@ -1,3 +1,5 @@
+from atst.models import AuditEvent
+
 from tests.factories import (
     ApplicationFactory,
     ApplicationRoleFactory,
@@ -21,3 +23,18 @@ def test_application_environments_excludes_deleted():
     EnvironmentFactory.create(application=app, deleted=True)
     assert len(app.environments) == 1
     assert app.environments[0].id == env.id
+
+
+def test_audit_event_for_application_deletion(session):
+    app = ApplicationFactory.create()
+    app.deleted = True
+    session.add(app)
+    session.commit()
+
+    update_event = (
+        session.query(AuditEvent)
+        .filter(AuditEvent.resource_id == app.id, AuditEvent.action == "update")
+        .one()
+    )
+    assert update_event.changed_state.get("deleted")
+    assert update_event.changed_state["deleted"] == [False, True]