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import os
import multiprocessing
import re
import signal
from unittest.mock import patch
from pkgdev.mangle import Mangler
import pytest
from snakeoil.cli.exceptions import UserException
class TestMangler:
def test_nonexistent_file(self, tmp_path):
path = tmp_path / 'nonexistent'
assert list(Mangler([str(path)])) == []
def test_empty_file(self, tmp_path):
path = tmp_path / 'empty'
path.touch()
assert list(Mangler([str(path)])) == []
def test_skipped_file(self, tmp_path):
paths = [(tmp_path / x) for x in ('file', 'file.patch')]
for p in paths:
p.write_text('# comment')
# skip patch files
skip_regex = re.compile(r'.+\.patch$')
mangled_paths = set(Mangler(map(str, paths), skip_regex=skip_regex))
assert mangled_paths == {str(tmp_path / 'file')}
for p in paths:
p.write_text('# comment')
# don't skip any files
mangled_paths = set(Mangler(map(str, paths)))
assert mangled_paths == set(map(str, paths))
def test_nonmangled_file(self, tmp_path):
path = tmp_path / 'file'
path.write_text('# comment\n')
assert list(Mangler([str(path)])) == []
def test_mangled_file(self, tmp_path):
path = tmp_path / 'file'
path.write_text('# comment')
assert list(Mangler([str(path)])) == [str(path)]
assert path.read_text() == '# comment\n'
def test_iterator_exceptions(self, tmp_path):
"""Test parallelized iterator against unhandled exceptions."""
path = tmp_path / 'file'
path.write_text('# comment\n')
def _mangle_func(self, data):
raise Exception('func failed')
with patch('pkgdev.mangle.Mangler._mangle_file', _mangle_func):
with pytest.raises(UserException, match='Exception: func failed'):
list(Mangler([str(path)]))
def test_sigint_handling(self, tmp_path):
"""Verify SIGINT is properly handled by the parallelized pipeline."""
path = tmp_path / 'file'
path.write_text('# comment\n')
def run(queue):
"""Mangler run in a separate process that gets interrupted."""
import sys
import time
from functools import partial
from unittest.mock import patch
from pkgdev.mangle import Mangler
def sleep():
"""Notify testing process then sleep."""
queue.put('ready')
time.sleep(100)
with patch('pkgdev.mangle.Mangler.__iter__') as fake_iter:
fake_iter.side_effect = partial(sleep)
try:
iter(Mangler([str(path)]))
except KeyboardInterrupt:
queue.put(None)
sys.exit(0)
queue.put(None)
sys.exit(1)
mp_ctx = multiprocessing.get_context('fork')
queue = mp_ctx.SimpleQueue()
p = mp_ctx.Process(target=run, args=(queue,))
p.start()
# wait for pipeline object to be fully initialized then send SIGINT
for _ in iter(queue.get, None):
os.kill(p.pid, signal.SIGINT)
p.join()
assert p.exitcode == 0
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