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from __future__ import unicode_literals
import os
import unittest
import warnings
from django.test import SimpleTestCase, RequestFactory, override_settings
from django.test.utils import reset_warning_registry
from django.utils import six, translation
from django.utils.deprecation import RenameMethodsBase
from django.utils.encoding import force_text
from django.utils.functional import memoize
class RenameManagerMethods(RenameMethodsBase):
renamed_methods = (
('old', 'new', DeprecationWarning),
)
class RenameMethodsTests(SimpleTestCase):
"""
Tests the `RenameMethodsBase` type introduced to rename `get_query_set`
to `get_queryset` across the code base following #15363.
"""
def test_class_definition_warnings(self):
"""
Ensure a warning is raised upon class definition to suggest renaming
the faulty method.
"""
reset_warning_registry()
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('always')
class Manager(six.with_metaclass(RenameManagerMethods)):
def old(self):
pass
self.assertEqual(len(recorded), 1)
msg = str(recorded[0].message)
self.assertEqual(msg,
'`Manager.old` method should be renamed `new`.')
def test_get_new_defined(self):
"""
Ensure `old` complains and not `new` when only `new` is defined.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('ignore')
class Manager(six.with_metaclass(RenameManagerMethods)):
def new(self):
pass
warnings.simplefilter('always')
manager = Manager()
manager.new()
self.assertEqual(len(recorded), 0)
manager.old()
self.assertEqual(len(recorded), 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'`Manager.old` is deprecated, use `new` instead.')
def test_get_old_defined(self):
"""
Ensure `old` complains when only `old` is defined.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('ignore')
class Manager(six.with_metaclass(RenameManagerMethods)):
def old(self):
pass
warnings.simplefilter('always')
manager = Manager()
manager.new()
self.assertEqual(len(recorded), 0)
manager.old()
self.assertEqual(len(recorded), 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'`Manager.old` is deprecated, use `new` instead.')
def test_deprecated_subclass_renamed(self):
"""
Ensure the correct warnings are raised when a class that didn't rename
`old` subclass one that did.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('ignore')
class Renamed(six.with_metaclass(RenameManagerMethods)):
def new(self):
pass
class Deprecated(Renamed):
def old(self):
super(Deprecated, self).old()
warnings.simplefilter('always')
deprecated = Deprecated()
deprecated.new()
self.assertEqual(len(recorded), 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'`Renamed.old` is deprecated, use `new` instead.')
recorded[:] = []
deprecated.old()
self.assertEqual(len(recorded), 2)
msgs = [str(warning.message) for warning in recorded]
self.assertEqual(msgs, [
'`Deprecated.old` is deprecated, use `new` instead.',
'`Renamed.old` is deprecated, use `new` instead.',
])
def test_renamed_subclass_deprecated(self):
"""
Ensure the correct warnings are raised when a class that renamed
`old` subclass one that didn't.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('ignore')
class Deprecated(six.with_metaclass(RenameManagerMethods)):
def old(self):
pass
class Renamed(Deprecated):
def new(self):
super(Renamed, self).new()
warnings.simplefilter('always')
renamed = Renamed()
renamed.new()
self.assertEqual(len(recorded), 0)
renamed.old()
self.assertEqual(len(recorded), 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'`Renamed.old` is deprecated, use `new` instead.')
def test_deprecated_subclass_renamed_and_mixins(self):
"""
Ensure the correct warnings are raised when a subclass inherit from a
class that renamed `old` and mixins that may or may not have renamed
`new`.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('ignore')
class Renamed(six.with_metaclass(RenameManagerMethods)):
def new(self):
pass
class RenamedMixin(object):
def new(self):
super(RenamedMixin, self).new()
class DeprecatedMixin(object):
def old(self):
super(DeprecatedMixin, self).old()
class Deprecated(DeprecatedMixin, RenamedMixin, Renamed):
pass
warnings.simplefilter('always')
deprecated = Deprecated()
deprecated.new()
self.assertEqual(len(recorded), 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'`RenamedMixin.old` is deprecated, use `new` instead.')
deprecated.old()
self.assertEqual(len(recorded), 2)
msgs = [str(warning.message) for warning in recorded]
self.assertEqual(msgs, [
'`DeprecatedMixin.old` is deprecated, use `new` instead.',
'`RenamedMixin.old` is deprecated, use `new` instead.',
])
class DeprecatingRequestMergeDictTest(SimpleTestCase):
def test_deprecated_request(self):
"""
Ensure the correct warning is raised when WSGIRequest.REQUEST is
accessed.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('always')
request = RequestFactory().get('/')
request.REQUEST # evaluate
msgs = [str(warning.message) for warning in recorded]
self.assertEqual(msgs, [
'`request.REQUEST` is deprecated, use `request.GET` or '
'`request.POST` instead.',
'`MergeDict` is deprecated, use `dict.update()` instead.',
])
@override_settings(USE_I18N=True)
class DeprecatedChineseLanguageCodes(SimpleTestCase):
def test_deprecation_warning(self):
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('always')
with translation.override('zh-cn'):
pass
with translation.override('zh-tw'):
pass
msgs = [str(warning.message) for warning in recorded]
self.assertEqual(msgs, [
"The use of the language code 'zh-cn' is deprecated. "
"Please use the 'zh-hans' translation instead.",
"The use of the language code 'zh-tw' is deprecated. "
"Please use the 'zh-hant' translation instead.",
])
class DeprecatingMemoizeTest(SimpleTestCase):
def test_deprecated_memoize(self):
"""
Ensure the correct warning is raised when memoize is used.
"""
with warnings.catch_warnings(record=True) as recorded:
warnings.simplefilter('always')
memoize(lambda x: x, {}, 1)
msg = str(recorded.pop().message)
self.assertEqual(msg,
'memoize wrapper is deprecated and will be removed in Django '
'1.9. Use django.utils.lru_cache instead.')
class DeprecatingSimpleTestCaseUrls(unittest.TestCase):
def test_deprecation(self):
"""
Ensure the correct warning is raised when SimpleTestCase.urls is used.
"""
class TempTestCase(SimpleTestCase):
urls = 'tests.urls'
def test(self):
pass
with warnings.catch_warnings(record=True) as recorded:
warnings.filterwarnings('always')
suite = unittest.TestLoader().loadTestsFromTestCase(TempTestCase)
with open(os.devnull, 'w') as devnull:
unittest.TextTestRunner(stream=devnull, verbosity=2).run(suite)
msg = force_text(recorded.pop().message)
self.assertEqual(msg,
"SimpleTestCase.urls is deprecated and will be removed in "
"Django 2.0. Use @override_settings(ROOT_URLCONF=...) "
"in TempTestCase instead.")
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