add test for default generic type

Author: khvn26

tests/unit/test_engine.py

@@ -397,3 +397,39 @@ class CustomMetadata(TypedDict):
 
     # Then
     assert result["segments"][0]["metadata"] is segment_metadata
+
+
+def test_segment_metadata_generic_type__default__returns_expected() -> None:
+    # Given
+    segment_metadata = {"hello": object()}
+
+    # we don't specify generic type, but mypy is happy with this
+    evaluation_context: EvaluationContext = {
+        "environment": {"key": "api-key", "name": ""},
+        "segments": {
+            "1": {
+                "key": "1",
+                "name": "my_segment",
+                "rules": [
+                    {
+                        "type": "ALL",
+                        "conditions": [
+                            {
+                                "property": "$.environment.name",
+                                "operator": "EQUAL",
+                                "value": "",
+                            }
+                        ],
+                        "rules": [],
+                    }
+                ],
+                "metadata": segment_metadata,
+            },
+        },
+    }
+
+    # When
+    result = get_evaluation_result(evaluation_context)
+
+    # Then
+    assert result["segments"][0]["metadata"] is segment_metadata