Fix datetime.utcnow deprecation in Python 3.12

haas/result.py

@@ -19,6 +19,16 @@
 from .error_holder import ErrorHolder
 
 
+if sys.version_info >= (3, 12):
+    from datetime import UTC
+
+    def datetime_utcnow():
+        return datetime.now(UTC)
+else:
+    def datetime_utcnow():
+        return datetime.utcnow()
+
+
 class TestCompletionStatus(Enum):
     """Enumeration to represent the status of a single test.
 
@@ -422,7 +432,7 @@ def startTest(self, test, start_time=None):
 
         """
         if start_time is None:
-            start_time = datetime.utcnow()
+            start_time = datetime_utcnow()
         self._test_timing[self._testcase_to_key(test)] = start_time
         self._mirror_output = False
         self._setup_stdout()
@@ -496,13 +506,13 @@ def _handle_result(self, test, status, exception=None, message=None):
 
         started_time = self._test_timing.get(self._testcase_to_key(test))
         if started_time is None and isinstance(test, ErrorHolder):
-            started_time = datetime.utcnow()
+            started_time = datetime_utcnow()
         elif started_time is None:
             raise RuntimeError(
                 'Missing test start! Please report this error as a bug in '
                 'haas.')
 
-        completion_time = datetime.utcnow()
+        completion_time = datetime_utcnow()
         duration = TestDuration(started_time, completion_time)
         result = TestResult.from_test_case(
             test,

haas/tests/fixtures.py

@@ -31,3 +31,6 @@ def utcnow(self):
             return next(self.ret)
         except StopIteration:
             raise ValueError('No more mock values!')
+
+    def now(self, tz):
+        return self.utcnow()