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# Copyright (C) 2011-2012 by Barry A. Warsaw
#
# This file is part of flufl.enum.
#
# flufl.enum is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# flufl.enum is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with flufl.enum. If not, see <http://www.gnu.org/licenses/>.
"""Additional package tests."""
from __future__ import absolute_import, print_function, unicode_literals
__metaclass__ = type
__all__ = [
'TestEnum',
]
import unittest
import warnings
from flufl.enum import Enum, make, make_enum
class TestEnum(unittest.TestCase):
"""Additional unit tests."""
def test_deprecations(self):
# Enum.enumclass and Enum.enumname are deprecated.
class Animals(Enum):
ant = 1
bee = 2
cat = 3
with warnings.catch_warnings(record=True) as seen:
# Cause all warnings to always be triggered.
warnings.simplefilter('always')
Animals.ant.enumclass
self.assertEqual(len(seen), 1)
self.assertTrue(issubclass(seen[0].category, DeprecationWarning))
self.assertEqual(seen[0].message.args[0],
'.enumclass is deprecated; use .enum instead')
with warnings.catch_warnings(record=True) as seen:
# Cause all warnings to always be triggered.
warnings.simplefilter('always')
Animals.ant.enumname
self.assertEqual(len(seen), 1)
self.assertTrue(issubclass(seen[0].category, DeprecationWarning))
self.assertEqual(seen[0].message.args[0],
'.enumname is deprecated; use .name instead')
def test_make_enum_identifiers_bug_803570(self):
# LP: #803570 describes that make_enum() allows non-identifiers as
# enum value names.
try:
make_enum('Foo', '1 2 3')
except ValueError as exc:
self.assertEqual(exc.args[0], 'non-identifiers: 1 2 3')
else:
raise AssertionError('Expected a ValueError')
def test_make_enum_deprecated(self):
# LP: #839529: deprecate the make_enum() API and use the much better
# make() API.
with warnings.catch_warnings(record=True) as seen:
# Cause all warnings to always be triggered.
warnings.simplefilter('always')
make_enum('Foo', 'a b c')
self.assertEqual(len(seen), 1)
self.assertTrue(issubclass(seen[0].category, DeprecationWarning))
self.assertEqual(seen[0].message.args[0],
'make_enum() is deprecated; use make() instead')
def test_enum_make_not_all_2_tuples(self):
# If 2-tuples are used, all items must be 2-tuples.
self.assertRaises(ValueError, make, 'Animals', (
('ant', 1),
('bee', 2),
'cat',
('dog', 4),
))
self.assertRaises(ValueError, make, 'Animals', (
('ant', 1),
('bee', 2),
('cat',),
('dog', 4),
))
self.assertRaises(ValueError, make, 'Animals', (
('ant', 1),
('bee', 2),
('cat', 3, 'oops'),
('dog', 4),
))
def test_make_identifiers(self):
# Ensure that the make() interface also enforces identifiers.
try:
make('Foo', ('1', '2', '3'))
except ValueError as exc:
self.assertEqual(exc.args[0], 'non-identifiers: 1 2 3')
else:
raise AssertionError('Expected a ValueError')
try:
make('Foo', (('ant', 1), ('bee', 2), ('3', 'cat')))
except ValueError as exc:
self.assertEqual(exc.args[0], 'non-identifiers: 3')
else:
raise AssertionError('Expected a ValueError')
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