feat: add HOUR support for time partitioning interval (#91)

* feat: add HOUR support for time partitioning interval

Author: shollyman

google/cloud/bigquery/table.py

@@ -590,8 +590,6 @@ def partitioning_type(self):
         """Union[str, None]: Time partitioning of the table if it is
         partitioned (Defaults to :data:`None`).
 
-        The only partitioning type that is currently supported is
-        :attr:`~google.cloud.bigquery.table.TimePartitioningType.DAY`.
         """
         warnings.warn(
             "This method will be deprecated in future versions. Please use "
@@ -1993,6 +1991,9 @@ class TimePartitioningType(object):
     DAY = "DAY"
     """str: Generates one partition per day."""
 
+    HOUR = "HOUR"
+    """str: Generates one partition per hour."""
+
 
 class TimePartitioning(object):
     """Configures time-based partitioning for a table.

tests/unit/test_table.py

@@ -1030,11 +1030,11 @@ def test_time_partitioning_setter(self):
         dataset = DatasetReference(self.PROJECT, self.DS_ID)
         table_ref = dataset.table(self.TABLE_NAME)
         table = self._make_one(table_ref)
-        time_partitioning = TimePartitioning(type_=TimePartitioningType.DAY)
+        time_partitioning = TimePartitioning(type_=TimePartitioningType.HOUR)
 
         table.time_partitioning = time_partitioning
 
-        self.assertEqual(table.time_partitioning.type_, TimePartitioningType.DAY)
+        self.assertEqual(table.time_partitioning.type_, TimePartitioningType.HOUR)
         # Both objects point to the same properties dict
         self.assertIs(
             table._properties["timePartitioning"], time_partitioning._properties