gecko-dev/config/tests/test_mozbuild_reading.py

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Python
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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from __future__ import unicode_literals
import os
import unittest
from mozunit import main
from mozbuild.base import MozbuildObject
from mozbuild.frontend.reader import (
BuildReader,
EmptyConfig,
)
class TestMozbuildReading(unittest.TestCase):
# This hack is needed to appease running in automation.
def setUp(self):
self._old_env = dict(os.environ)
os.environ.pop('MOZCONFIG', None)
os.environ.pop('MOZ_OBJDIR', None)
def tearDown(self):
os.environ.clear()
os.environ.update(self._old_env)
def _mozbuilds(self, reader):
if not hasattr(self, '_mozbuild_paths'):
self._mozbuild_paths = set(reader.all_mozbuild_paths())
return self._mozbuild_paths
@unittest.skip('failing in SpiderMonkey builds')
def test_filesystem_traversal_reading(self):
"""Reading moz.build according to filesystem traversal works.
We attempt to read every known moz.build file via filesystem traversal.
If this test fails, it means that metadata extraction will fail.
"""
mb = MozbuildObject.from_environment(detect_virtualenv_mozinfo=False)
config = mb.config_environment
reader = BuildReader(config)
all_paths = self._mozbuilds(reader)
paths, contexts = reader.read_relevant_mozbuilds(all_paths)
self.assertEqual(set(paths), all_paths)
self.assertGreaterEqual(len(contexts), len(paths))
def test_filesystem_traversal_no_config(self):
"""Reading moz.build files via filesystem traversal mode with no build config.
This is similar to the above test except no build config is applied.
This will likely fail in more scenarios than the above test because a
lot of moz.build files assumes certain variables are present.
"""
here = os.path.abspath(os.path.dirname(__file__))
root = os.path.normpath(os.path.join(here, '..', '..'))
config = EmptyConfig(root)
reader = BuildReader(config)
all_paths = self._mozbuilds(reader)
paths, contexts = reader.read_relevant_mozbuilds(all_paths)
self.assertEqual(set(paths.keys()), all_paths)
self.assertGreaterEqual(len(contexts), len(paths))
if __name__ == '__main__':
main()