mirror of
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83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
from __future__ import with_statement
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from flake8 import engine, util, __version__
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import pep8
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import unittest
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import mock
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class TestEngine(unittest.TestCase):
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def setUp(self):
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self.patches = {}
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def tearDown(self):
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assert len(self.patches.items()) == 0
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def start_patch(self, patch):
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self.patches[patch] = mock.patch(patch)
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return self.patches[patch].start()
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def stop_patches(self):
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patches = self.patches.copy()
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for k, v in patches.items():
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v.stop()
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del(self.patches[k])
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def test_get_style_guide(self):
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with mock.patch('flake8.engine._register_extensions') as reg_ext:
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reg_ext.return_value = ([], [], [])
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g = engine.get_style_guide()
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self.assertTrue(isinstance(g, engine.StyleGuide))
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reg_ext.assert_called_once_with()
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def test_get_style_guide_kwargs(self):
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m = mock.Mock()
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with mock.patch('flake8.engine.StyleGuide') as StyleGuide:
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with mock.patch('flake8.engine.get_parser') as get_parser:
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get_parser.return_value = (m, [])
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engine.get_style_guide(foo='bar')
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get_parser.assert_called_once_with()
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StyleGuide.assert_called_once_with(**{'parser': m, 'foo': 'bar'})
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def test_register_extensions(self):
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with mock.patch('pep8.register_check') as register_check:
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registered_extensions = engine._register_extensions()
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self.assertTrue(isinstance(registered_extensions[0], util.OrderedSet))
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self.assertTrue(len(registered_extensions[0]) > 0)
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for i in registered_extensions[1:]:
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self.assertTrue(isinstance(i, list))
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register_check.assert_called()
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def test_get_parser(self):
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# setup
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re = self.start_patch('flake8.engine._register_extensions')
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gpv = self.start_patch('flake8.engine.get_python_version')
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pgp = self.start_patch('pep8.get_parser')
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m = mock.Mock()
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re.return_value = ([('pyflakes', '0.7'), ('mccabe', '0.2')], [], [])
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gpv.return_value = 'Python Version'
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pgp.return_value = m
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# actual call we're testing
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parser, hooks = engine.get_parser()
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# assertions
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re.assert_called()
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gpv.assert_called()
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pgp.assert_called_once_with(
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'flake8',
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'%s (pyflakes: 0.7, mccabe: 0.2) Python Version' % __version__
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)
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m.remove_option.assert_called()
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m.add_option.assert_called()
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self.assertEqual(parser, m)
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self.assertEqual(hooks, [])
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# clean-up
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self.stop_patches()
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def test_get_python_version(self):
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self.assertTrue('on' in engine.get_python_version())
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# Silly test but it will provide 100% test coverage
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# Also we can never be sure (without reconstructing the string
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# ourselves) what system we may be testing on.
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if __name__ == '__main__':
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unittest.main()
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