fix(audit): centraliser l'horloge UTC

tests/test_time_utils.py

@@ -0,0 +1,29 @@
+"""Regression tests for the application's timestamp convention."""
+
+import ast
+from datetime import UTC, datetime
+from pathlib import Path
+
+from app.time_utils import utc_now_naive
+
+
+def test_utc_now_naive_is_an_explicit_utc_value():
+    before = datetime.now(UTC).replace(tzinfo=None)
+    actual = utc_now_naive()
+    after = datetime.now(UTC).replace(tzinfo=None)
+
+    assert actual.tzinfo is None
+    assert before <= actual <= after
+
+
+def test_application_does_not_call_deprecated_utcnow():
+    app_root = Path(__file__).parents[1] / 'app'
+    offenders = []
+
+    for path in app_root.rglob('*.py'):
+        tree = ast.parse(path.read_text(encoding='utf-8'), filename=str(path))
+        for node in ast.walk(tree):
+            if isinstance(node, ast.Attribute) and node.attr == 'utcnow':
+                offenders.append(f'{path.relative_to(app_root)}:{node.lineno}')
+
+    assert offenders == []