conftest.py

# Copyright 2024 The Protoscribe Authors.
#
# 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,
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# See the License for the specific language governing permissions and
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"""Pytest fixture for avoiding UnparsedFlagAccessError when running tests."""

import os
import sys

from absl import flags
# Need to import absltest to get `--test_srcdir` and `--test_tmpdir` defined.
from absl.testing import absltest  # pylint: disable=unused-import
import pytest


@pytest.fixture(scope='session', autouse=True)
def parse_flags() -> None:
  # Only pass the first item, because pytest flags shouldn't be parsed as absl
  # flags.
  flags.FLAGS(sys.argv[:1])
  # Explicitly create temporary directories since `pytest` does not seem to do
  # that.
  if not os.path.exists(flags.FLAGS.test_tmpdir):
    os.makedirs(flags.FLAGS.test_tmpdir)