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Refactor checker manager and add tests

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This commit is contained in:
Ian Cordasco 2016-04-05 18:52:35 -05:00
parent eb3d8f5791
commit 78b986d506
2 changed files with 40 additions and 32 deletions
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22
tests/unit/test_checker_manager.py
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@ -7,11 +7,18 @@ import pytest
from flake8 import checker
def style_guide_mock(**kwargs):
kwargs.setdefault('diff', False)
kwargs.setdefault('jobs', '4')
style_guide = mock.Mock()
style_guide.options = mock.Mock(**kwargs)
return style_guide
def test_oserrors_cause_serial_fall_back():
"""Verify that OSErrors will cause the Manager to fallback to serial."""
err = OSError(errno.ENOSPC, 'Ominous message about spaceeeeee')
style_guide = mock.Mock()
style_guide.options = mock.Mock(diff=False, jobs='4')
style_guide = style_guide_mock()
with mock.patch('multiprocessing.Queue', side_effect=err):
manager = checker.Manager(style_guide, [], [])
assert manager.using_multiprocessing is False
@ -20,8 +27,15 @@ def test_oserrors_cause_serial_fall_back():
def test_oserrors_are_reraised():
"""Verify that OSErrors will cause the Manager to fallback to serial."""
err = OSError(errno.EAGAIN, 'Ominous message')
style_guide = mock.Mock()
style_guide.options = mock.Mock(diff=False, jobs='4')
style_guide = style_guide_mock()
with mock.patch('multiprocessing.Queue', side_effect=err):
with pytest.raises(OSError):
checker.Manager(style_guide, [], [])
def test_multiprocessing_is_disabled():
"""Verify not being able to import multiprocessing forces jobs to 0."""
style_guide = style_guide_mock()
with mock.patch('flake8.checker.multiprocessing', None):
manager = checker.Manager(style_guide, [], [])
assert manager.jobs == 0