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# SPDX-License-Identifier: BSD-2-Clause
#
# This file is part of pyosmium. (https://osmcode.org/pyosmium/)
#
# Copyright (C) 2025 Sarah Hoffmann <lonvia@denofr.de> and others.
# For a full list of authors see the git log.
import pytest
import uuid
import osmium
from helpers import IDCollector
def test_simple_way(test_data, tmp_path):
ref_file = test_data('\n'.join((f"n{i} x2 y3" for i in range(10))))
class TestWay:
id = 34
nodes = [3, 6, 5]
outfile = str(tmp_path / f'{uuid.uuid4()}.osm')
with osmium.BackReferenceWriter(outfile, ref_file) as writer:
writer.add_way(TestWay())
ids = IDCollector()
osmium.apply(outfile, ids)
assert ids.nodes == [3, 5, 6]
assert ids.ways == [34]
assert not ids.relations
def test_do_not_write_on_exception(test_data, tmp_path):
ref_file = test_data('\n'.join((f"n{i} x2 y3" for i in range(10))))
outfile = tmp_path / f'{uuid.uuid4()}.osm'
with pytest.raises(RuntimeError, match="inner error"):
with osmium.BackReferenceWriter(str(outfile), ref_file):
raise RuntimeError("inner error")
assert not outfile.exists()
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