emacs_test.py

# Copyright 2020, 2021, 2022, 2023, 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
#
#     https://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.

"""Unit tests for the Emacs binary."""

import pathlib
import os
import subprocess

from absl import flags
from absl.testing import absltest

from elisp.private.tools import runfiles

FLAGS = flags.FLAGS

flags.DEFINE_string('emacs', None, 'runfile location of the Emacs binary',
                    required=True)

class EmacsTest(absltest.TestCase):
    """Unit tests for the Emacs binary."""

    def test_version(self) -> None:
        """Tests that emacs --version works."""
        run_files = runfiles.Runfiles()
        emacs = run_files.resolve(pathlib.PurePosixPath(FLAGS.emacs))
        env = dict(os.environ)
        env.update(run_files.environment())
        process = subprocess.run([str(emacs), '--version'], env=env,
                                 check=False)
        self.assertEqual(process.returncode, 0)


if __name__ == '__main__':
    absltest.main()