feat(storage): add setter method

google/cloud/storage/blob.py

@@ -51,6 +51,7 @@
 from google.api_core.iam import Policy
 from google.cloud import exceptions
 from google.cloud._helpers import _bytes_to_unicode
+from google.cloud._helpers import _datetime_to_rfc3339
 from google.cloud._helpers import _rfc3339_to_datetime
 from google.cloud._helpers import _to_bytes
 from google.cloud.exceptions import NotFound
@@ -3018,6 +3019,18 @@ def custom_time(self):
         if value is not None:
             return _rfc3339_to_datetime(value)
 
+    @custom_time.setter
+    def custom_time(self, value):
+        """Set the custom time for the object.
+
+        See https://cloud.google.com/storage/docs/json_api/v1/objects
+
+        :type value: :class:`datetime.datetime`
+        :param value: (Optional) Set the custom time of blob. Datetime object parsed
+                                 from RFC3339 valid timestamp.
+        """
+        self._properties["customTime"] = _datetime_to_rfc3339(value)
+
 
 def _get_encryption_headers(key, source=False):
     """Builds customer encryption key headers

tests/unit/test_blob.py

@@ -3792,7 +3792,7 @@ def test_updated_unset(self):
         blob = self._make_one("blob-name", bucket=BUCKET)
         self.assertIsNone(blob.updated)
 
-    def test_custom_time(self):
+    def test_custom_time_getter(self):
         from google.cloud._helpers import _RFC3339_MICROS
         from google.cloud._helpers import UTC
 
@@ -3804,6 +3804,17 @@ def test_custom_time(self):
         blob = self._make_one(BLOB_NAME, bucket=bucket, properties=properties)
         self.assertEqual(blob.custom_time, TIMESTAMP)
 
+    def test_custom_time_setter(self):
+        from google.cloud._helpers import UTC
+
+        BLOB_NAME = "blob-name"
+        bucket = _Bucket()
+        TIMESTAMP = datetime.datetime(2014, 11, 5, 20, 34, 37, tzinfo=UTC)
+        blob = self._make_one(BLOB_NAME, bucket=bucket)
+        self.assertIsNone(blob.custom_time)
+        blob.custom_time = TIMESTAMP
+        self.assertEqual(blob.custom_time, TIMESTAMP)
+
     def test_custom_time_unset(self):
         BUCKET = object()
         blob = self._make_one("blob-name", bucket=BUCKET)