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test_sequences.py
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55 lines (44 loc) · 1.62 KB
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# Copyright 2025 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
import itertools
from typing import Sequence
import pytest
from bigframes.core import sequences
LARGE_LIST = list(range(100, 500))
SMALL_LIST = list(range(1, 5))
CHAINED_LIST = sequences.ChainedSequence([SMALL_LIST for i in range(100)])
def _build_reference(*parts):
return tuple(itertools.chain(*parts))
def _check_equivalence(expected: Sequence, actual: Sequence):
assert len(expected) == len(actual)
assert tuple(expected) == tuple(actual)
assert expected[10:1:-2] == actual[10:1:-2]
if len(expected) > 0:
assert expected[len(expected) - 1] == expected[len(actual) - 1]
@pytest.mark.parametrize(
("parts",),
[
([],),
([[]],),
([[0, 1, 2]],),
([LARGE_LIST, SMALL_LIST, LARGE_LIST],),
([SMALL_LIST * 100],),
([CHAINED_LIST, LARGE_LIST, CHAINED_LIST, SMALL_LIST],),
],
)
def test_init_chained_sequence_single_slist(parts):
value = sequences.ChainedSequence(*parts)
expected = _build_reference(*parts)
_check_equivalence(expected, value)