Move queue helper functions to staticmethods on their adapters.

Co-authored-by: Cursor <[email protected]>

tests/unit/file_backed_queue_adapter_test.py

@@ -207,10 +207,8 @@ def test_reconnect_replays_after_disconnect(tmp_path: Path) -> None:
 
 
 def test_json_default_rejects_unsupported() -> None:
-    from python_repositories.adapters.file_backed_queue_adapter import _json_default
-
     with pytest.raises(TypeError):
-        _json_default(object())
+        FileBackedQueueAdapter._json_default(object())
 
 
 def test_disconnect_ignores_fsync_oserror(

tests/unit/memory_queue_adapter_test.py

@@ -7,10 +7,7 @@ import threading
 
 import pytest
 
-from python_repositories.adapters.memory_queue_adapter import (
-    MemoryQueueAdapter,
-    _parse_age,
-)
+from python_repositories.adapters.memory_queue_adapter import MemoryQueueAdapter
 from python_repositories.interfaces.queue_repository_interface import (
     QueueRepositoryInterface,
 )
@@ -85,7 +82,7 @@ def test_evict_without_age_key_is_noop() -> None:
 
 def test_parse_age_rejects_unsupported_type() -> None:
     with pytest.raises(ValueError, match="age value must be"):
-        _parse_age(123)
+        MemoryQueueAdapter._parse_age(123)
 
 
 def test_parse_age_aware_datetime() -> None:
@@ -93,22 +90,26 @@ def test_parse_age_aware_datetime() -> None:
 
     eastern = timezone(timedelta(hours=-5))
     aware = datetime(2024, 1, 1, 12, 0, 0, tzinfo=eastern)
-    assert _parse_age(aware) == datetime(2024, 1, 1, 17, 0, 0, tzinfo=UTC)
+    assert MemoryQueueAdapter._parse_age(aware) == datetime(
+        2024, 1, 1, 17, 0, 0, tzinfo=UTC
+    )
 
 
 def test_parse_age_naive_datetime() -> None:
     naive = datetime(2024, 1, 1, 12, 0, 0)
-    assert _parse_age(naive) == datetime(2024, 1, 1, 12, 0, 0, tzinfo=UTC)
+    assert MemoryQueueAdapter._parse_age(naive) == datetime(
+        2024, 1, 1, 12, 0, 0, tzinfo=UTC
+    )
 
 
 def test_parse_age_zulu_string() -> None:
-    assert _parse_age("2024-01-01T00:00:00Z") == datetime(
+    assert MemoryQueueAdapter._parse_age("2024-01-01T00:00:00Z") == datetime(
         2024, 1, 1, 0, 0, 0, tzinfo=UTC
     )
 
 
 def test_parse_age_naive_string() -> None:
-    assert _parse_age("2024-01-01T00:00:00") == datetime(
+    assert MemoryQueueAdapter._parse_age("2024-01-01T00:00:00") == datetime(
         2024, 1, 1, 0, 0, 0, tzinfo=UTC
     )