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41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
"""Tests for the Manager object for FileCheckers."""
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import errno
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import mock
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import pytest
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from flake8 import checker
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def style_guide_mock(**kwargs):
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kwargs.setdefault('diff', False)
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kwargs.setdefault('jobs', '4')
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style_guide = mock.Mock()
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style_guide.options = mock.Mock(**kwargs)
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return style_guide
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def test_oserrors_cause_serial_fall_back():
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"""Verify that OSErrors will cause the Manager to fallback to serial."""
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err = OSError(errno.ENOSPC, 'Ominous message about spaceeeeee')
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style_guide = style_guide_mock()
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with mock.patch('multiprocessing.Queue', side_effect=err):
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manager = checker.Manager(style_guide, [], [])
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assert manager.using_multiprocessing is False
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def test_oserrors_are_reraised():
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"""Verify that OSErrors will cause the Manager to fallback to serial."""
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err = OSError(errno.EAGAIN, 'Ominous message')
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style_guide = style_guide_mock()
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with mock.patch('multiprocessing.Queue', side_effect=err):
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with pytest.raises(OSError):
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checker.Manager(style_guide, [], [])
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def test_multiprocessing_is_disabled():
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"""Verify not being able to import multiprocessing forces jobs to 0."""
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style_guide = style_guide_mock()
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with mock.patch('flake8.checker.multiprocessing', None):
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manager = checker.Manager(style_guide, [], [])
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assert manager.jobs == 0
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