update test

Author: Linchin

google/cloud/bigquery/schema.py

@@ -221,7 +221,7 @@ def __init__(
         range_element_type: Union[FieldElementType, str, None] = None,
         rounding_mode: Union[enums.RoundingMode, str, None] = None,
         foreign_type_definition: Optional[str] = None,
-        timestamp_precision: Optional[int] = None,
+        timestamp_precision: Union[enums.TimestampPrecision, int, None] = None,
     ):
         self._properties: Dict[str, Any] = {
             "name": name,

tests/system/test_client.py

@@ -78,7 +78,10 @@
     bigquery.SchemaField("full_name", "STRING", mode="REQUIRED"),
     bigquery.SchemaField("age", "INTEGER", mode="REQUIRED"),
     bigquery.SchemaField(
-        "time_pico", "TIMESTAMP", mode="REQUIRED", timestamp_precision=12
+        "time_pico",
+        "TIMESTAMP",
+        mode="REQUIRED",
+        timestamp_precision=enums.TimestampPrecision.PICOSECOND,
     ),
 ]
 CLUSTERING_SCHEMA = [