Don't return naive datetimes from bucket/blob timestamp accessors.

Addresses:
#835 (comment)

Author: tseaver

gcloud/storage/blob.py

@@ -22,6 +22,7 @@
 import os
 import time
 
+import pytz
 import six
 from six.moves.urllib.parse import quote  # pylint: disable=F0401
 
@@ -749,7 +750,8 @@ def time_deleted(self):
         """
         value = self._properties.get('timeDeleted')
         if value is not None:
-            return datetime.datetime.strptime(value, _RFC3339_MICROS)
+            naive = datetime.datetime.strptime(value, _RFC3339_MICROS)
+            return naive.replace(tzinfo=pytz.utc)
 
     @property
     def updated(self):
@@ -763,7 +765,8 @@ def updated(self):
         """
         value = self._properties.get('updated')
         if value is not None:
-            return datetime.datetime.strptime(value, _RFC3339_MICROS)
+            naive = datetime.datetime.strptime(value, _RFC3339_MICROS)
+            return naive.replace(tzinfo=pytz.utc)
 
 
 class _UploadConfig(object):

gcloud/storage/bucket.py

@@ -36,6 +36,8 @@
 import datetime
 import copy
 import os
+
+import pytz
 import six
 
 from gcloud._helpers import get_default_project
@@ -693,7 +695,8 @@ def time_created(self):
         """
         value = self._properties.get('timeCreated')
         if value is not None:
-            return datetime.datetime.strptime(value, _RFC3339_MICROS)
+            naive = datetime.datetime.strptime(value, _RFC3339_MICROS)
+            return naive.replace(tzinfo=pytz.utc)
 
     @property
     def versioning_enabled(self):

gcloud/storage/test_blob.py

@@ -1016,11 +1016,12 @@ def test_storage_class(self):
 
     def test_time_deleted(self):
         import datetime
+        from pytz import utc
         from gcloud._helpers import _RFC3339_MICROS
         BLOB_NAME = 'blob-name'
         connection = _Connection()
         bucket = _Bucket(connection)
-        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37)
+        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37, tzinfo=utc)
         TIME_DELETED = TIMESTAMP.strftime(_RFC3339_MICROS)
         properties = {'timeDeleted': TIME_DELETED}
         blob = self._makeOne(BLOB_NAME, bucket=bucket, properties=properties)
@@ -1033,11 +1034,12 @@ def test_time_deleted_unset(self):
 
     def test_updated(self):
         import datetime
+        from pytz import utc
         from gcloud._helpers import _RFC3339_MICROS
         BLOB_NAME = 'blob-name'
         connection = _Connection()
         bucket = _Bucket(connection)
-        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37)
+        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37, tzinfo=utc)
         UPDATED = TIMESTAMP.strftime(_RFC3339_MICROS)
         properties = {'updated': UPDATED}
         blob = self._makeOne(BLOB_NAME, bucket=bucket, properties=properties)

gcloud/storage/test_bucket.py

@@ -790,8 +790,9 @@ def test_storage_class(self):
 
     def test_time_created(self):
         import datetime
+        from pytz import utc
         from gcloud._helpers import _RFC3339_MICROS
-        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37)
+        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37, tzinfo=utc)
         TIME_CREATED = TIMESTAMP.strftime(_RFC3339_MICROS)
         properties = {'timeCreated': TIME_CREATED}
         bucket = self._makeOne(properties=properties)