TiansuYu commented on code in PR #1083:
URL: https://github.com/apache/iceberg-python/pull/1083#discussion_r1727383478
##########
tests/table/test_init.py:
##########
@@ -512,6 +512,29 @@ def test_add_column(table_v2: Table) -> None:
assert apply_schema.highest_field_id == 4
+def test_update_column_doc(table_v1: Table, table_v2: Table) -> None:
+ COMMENT2 = "comment2"
+ for table in [table_v1, table_v2]:
+ original_schema = table.schema()
+ # update existing doc to a new doc
+ assert original_schema.find_field("y").doc == "comment"
+ new_schema = table.transaction().update_schema().update_column("y",
doc=COMMENT2)._apply()
+ assert new_schema.find_field("y").doc == COMMENT2, "failed to update
existing field doc"
+
+ # update existing doc to an emtpy string
+ assert new_schema.find_field("y").doc == COMMENT2
+ new_schema2 = table.transaction().update_schema().update_column("y",
doc="")._apply()
+ assert new_schema2.find_field("y").doc == "", "failed to remove
existing field doc"
+
+ # assert the above two updates also works with union_by_name
+ assert (
+ table.update_schema().union_by_name(new_schema)._apply() ==
new_schema
+ ), "failed to update existing field doc with union_by_name"
+ assert (
+ table.update_schema().union_by_name(new_schema2)._apply() ==
new_schema2
+ ), "failed to remove existing field doc with union_by_name"
+
+
Review Comment:
Will do
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