Model/tests/infrastructure/test_csv_s3_client.py
2026-05-20 14:00:19 +00:00

51 lines
1.5 KiB
Python

from collections.abc import Iterator
import pytest
from moto import mock_aws
from infrastructure.csv_s3_client import CsvS3Client
from tests.infrastructure import make_boto_client
BUCKET = "csv-bucket"
@pytest.fixture
def csv_client() -> Iterator[CsvS3Client]:
with mock_aws():
boto_client = make_boto_client("s3")
boto_client.create_bucket(Bucket=BUCKET)
yield CsvS3Client(boto_client, BUCKET)
def test_save_rows_returns_s3_uri(csv_client: CsvS3Client) -> None:
# arrange
rows = [{"address": "1 High St", "postcode": "AB1 2CD"}]
# act
uri = csv_client.save_rows(rows, "uploads/addresses.csv")
# assert
assert uri == f"s3://{BUCKET}/uploads/addresses.csv"
def test_round_trip_preserves_rows(csv_client: CsvS3Client) -> None:
# arrange
rows = [
{"address": "1 High St", "postcode": "AB1 2CD"},
{"address": "2 Low St", "postcode": "XY9 8ZW"},
]
# act
uri = csv_client.save_rows(rows, "uploads/addresses.csv")
fetched = csv_client.read_rows(uri)
# assert
assert fetched == rows
def test_save_rows_rejects_empty_list(csv_client: CsvS3Client) -> None:
# act / assert
with pytest.raises(ValueError, match="empty"):
csv_client.save_rows([], "uploads/empty.csv")
def test_read_rows_rejects_wrong_bucket(csv_client: CsvS3Client) -> None:
# act / assert
with pytest.raises(ValueError, match="does not match client bucket"):
csv_client.read_rows("s3://other-bucket/uploads/addresses.csv")