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# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of logilab-common.
#
# logilab-common 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 2.1 of the License, or (at your option) any
# later version.
#
# logilab-common 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 logilab-common. If not, see <http://www.gnu.org/licenses/>.
"""unit tests for the decorators module
"""
from logilab.common.testlib import TestCase, unittest_main
from logilab.common.decorators import monkeypatch, cached
class DecoratorsTC(TestCase):
def test_monkeypatch_with_same_name(self):
class MyClass: pass
@monkeypatch(MyClass)
def meth1(self):
return 12
self.assertEqual([attr for attr in dir(MyClass) if attr[:2] != '__'],
['meth1'])
inst = MyClass()
self.assertEqual(inst.meth1(), 12)
def test_monkeypatch_with_custom_name(self):
class MyClass: pass
@monkeypatch(MyClass, 'foo')
def meth2(self, param):
return param + 12
self.assertEqual([attr for attr in dir(MyClass) if attr[:2] != '__'],
['foo'])
inst = MyClass()
self.assertEqual(inst.foo(4), 16)
def test_cannot_cache_generator(self):
def foo():
yield 42
self.assertRaises(AssertionError, cached, foo)
def test_cached_preserves_docstrings_and_name(self):
class Foo(object):
@cached
def foo(self):
""" what's up doc ? """
def bar(self, zogzog):
""" what's up doc ? """
bar = cached(bar, 1)
@cached
def quux(self, zogzog):
""" what's up doc ? """
self.assertEqual(Foo.foo.__doc__, """ what's up doc ? """)
self.assertEqual(Foo.foo.func_name, 'foo')
self.assertEqual(Foo.bar.__doc__, """ what's up doc ? """)
self.assertEqual(Foo.bar.func_name, 'bar')
self.assertEqual(Foo.quux.__doc__, """ what's up doc ? """)
self.assertEqual(Foo.quux.func_name, 'quux')
if __name__ == '__main__':
unittest_main()
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