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test: Add test for reading and writing string_view arrays to Parquet files #405

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test: Add test for reading and writing string_view arrays to Parquet files #405

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13 changes: 13 additions & 0 deletions tests/io/test_parquet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

import pyarrow as pa
import pyarrow.parquet as pq
from arro3.core import Array, DataType, Table
from arro3.io import read_parquet, write_parquet


Expand Down Expand Up @@ -42,3 +43,15 @@ def test_copy_parquet_kv_metadata():

reader = read_parquet("test.parquet")
assert reader.schema.metadata[b"hello"] == b"world"


def test_string_view():
arr = Array(["foo", "bar", "baz"], type=DataType.string_view())
table = Table.from_arrays([arr], names=["a"])

bio = BytesIO()
write_parquet(table, bio)
bio.seek(0)

table_retour = read_parquet(bio).read_all()
assert table == table_retour
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