[AI-FSSDK] [FSSDK-12337] Add ExperimentTypes constant and targeted_delivery type

- Add ExperimentTypes class in enums.py with ab, mab, cmab, td, fr
- Add 'targeted_delivery' to ExperimentType Literal in types.py
- Use enums.ExperimentTypes.fr constant in injection check
- Add test for type field parsing from datafile

Author: FarhanAnjum-opti

optimizely/helpers/enums.py

@@ -229,6 +229,14 @@ class OdpManagerConfig:
     EVENT_TYPE: Final = 'fullstack'
 
 
+class ExperimentTypes:
+    ab: Final = 'a/b'
+    mab: Final = 'mab'
+    cmab: Final = 'cmab'
+    td: Final = 'targeted_delivery'
+    fr: Final = 'feature_rollout'
+
+
 class OdpSegmentsCacheConfig:
     """ODP Segment Cache configs."""
     DEFAULT_CAPACITY: Final = 10_000

optimizely/helpers/types.py

@@ -117,7 +117,7 @@ class CmabDict(BaseEntity):
     trafficAllocation: int
 
 
-ExperimentType = Literal['a/b', 'mab', 'cmab', 'feature_rollout']
+ExperimentType = Literal['a/b', 'mab', 'cmab', 'targeted_delivery', 'feature_rollout']
 
 HoldoutStatus = Literal['Draft', 'Running', 'Concluded', 'Archived']
 

optimizely/project_config.py

@@ -237,7 +237,7 @@ def __init__(self, datafile: str | bytes, logger: Logger, error_handler: Any):
             everyone_else_variation = self._get_everyone_else_variation(feature)
             if everyone_else_variation is not None:
                 for experiment in rules:
-                    if experiment.type == 'feature_rollout':
+                    if experiment.type == enums.ExperimentTypes.fr:
                         experiment.variations.append({
                             'id': everyone_else_variation.id,
                             'key': everyone_else_variation.key,

tests/test_config.py

@@ -1567,6 +1567,58 @@ def _build_datafile(self, experiments=None, rollouts=None, feature_flags=None):
         }
         return datafile
 
+    def test_experiment_type_field_parsed(self):
+        """Test that the 'type' field value is preserved on Experiment after config parsing."""
+        datafile = self._build_datafile(
+            experiments=[
+                {
+                    'id': 'exp_1',
+                    'key': 'feature_rollout_exp',
+                    'status': 'Running',
+                    'forcedVariations': {},
+                    'layerId': 'layer_1',
+                    'audienceIds': [],
+                    'trafficAllocation': [{'entityId': 'var_1', 'endOfRange': 5000}],
+                    'variations': [{'key': 'var_1', 'id': 'var_1', 'featureEnabled': True}],
+                    'type': 'feature_rollout',
+                },
+            ],
+            rollouts=[
+                {
+                    'id': 'rollout_1',
+                    'experiments': [
+                        {
+                            'id': 'rollout_rule_1',
+                            'key': 'rollout_rule_1',
+                            'status': 'Running',
+                            'forcedVariations': {},
+                            'layerId': 'rollout_1',
+                            'audienceIds': [],
+                            'trafficAllocation': [{'entityId': 'everyone_var', 'endOfRange': 10000}],
+                            'variations': [
+                                {'key': 'everyone_var', 'id': 'everyone_var', 'featureEnabled': False}
+                            ],
+                        }
+                    ],
+                }
+            ],
+            feature_flags=[
+                {
+                    'id': 'flag_1',
+                    'key': 'test_flag',
+                    'experimentIds': ['exp_1'],
+                    'rolloutId': 'rollout_1',
+                    'variables': [],
+                },
+            ],
+        )
+
+        opt = optimizely.Optimizely(json.dumps(datafile))
+        config = opt.config_manager.get_config()
+
+        experiment = config.experiment_id_map['exp_1']
+        self.assertEqual(experiment.type, 'feature_rollout')
+
     def test_experiment_type_field_none_when_missing(self):
         """Test that experiments without 'type' field have type=None."""
         datafile = self._build_datafile(