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##############################################################################
#
# Copyright (c) 2012 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Test adapter declaration helpers
"""
import unittest
class Test_adapter(unittest.TestCase):
def _getTargetClass(self):
from zope.component._declaration import adapter
return adapter
def _makeOne(self, *interfaces):
return self._getTargetClass()(*interfaces)
def test_ctor_no_interfaces(self):
deco = self._makeOne()
self.assertEqual(list(deco.interfaces), [])
def test_ctor_w_interfaces(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
deco = self._makeOne(IFoo, IBar)
self.assertEqual(list(deco.interfaces), [IFoo, IBar])
def test__call___w_class(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
@self._makeOne(IFoo, IBar)
class Baz(object):
pass
self.assertEqual(Baz.__component_adapts__, (IFoo, IBar))
def test__call___w_inst_of_decorated_class(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
@self._makeOne(IFoo, IBar)
class Baz(object):
pass
baz = Baz()
self.assertRaises(AttributeError,
getattr, baz, '__component_adapts_')
def test__call___w_non_class(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
class Baz(object):
pass
deco = self._makeOne(IFoo, IBar)
baz = deco(Baz())
self.assertEqual(baz.__component_adapts__, (IFoo, IBar))
class Test_adapts(unittest.TestCase):
def _run_generated_code(self, code, globs, locs,
fails_under_py3k=True,
):
import warnings
#from zope.component._compat import PYTHON3
PYTHON3 = False
with warnings.catch_warnings(record=True) as log:
warnings.resetwarnings()
if not PYTHON3:
exec(code, globs, locs)
self.assertEqual(len(log), 0) # no longer warn
return True
else:
try:
exec(code, globs, locs)
except TypeError:
return False
else:
if fails_under_py3k:
self.fail("Didn't raise TypeError")
def test_instances_not_affected(self):
from zope.component._declaration import adapts
class C(object):
adapts()
self.assertEqual(C.__component_adapts__, ())
def _try():
return C().__component_adapts__
self.assertRaises(AttributeError, _try)
def test_called_from_function(self):
import warnings
from zope.component._declaration import adapts
from zope.interface import Interface
class IFoo(Interface):
pass
globs = {'adapts': adapts, 'IFoo': IFoo}
locs = {}
CODE = "\n".join([
'def foo():',
' adapts(IFoo)'
])
if self._run_generated_code(CODE, globs, locs, False):
foo = locs['foo']
with warnings.catch_warnings(record=True) as log:
warnings.resetwarnings()
self.assertRaises(TypeError, foo)
self.assertEqual(len(log), 0) # no longer warn
def test_called_twice_from_class(self):
import warnings
from zope.component._declaration import adapts
from zope.interface import Interface
from zope.interface._compat import PYTHON3
class IFoo(Interface):
pass
class IBar(Interface):
pass
globs = {'adapts': adapts, 'IFoo': IFoo, 'IBar': IBar}
locs = {}
CODE = "\n".join([
'class Foo(object):',
' adapts(IFoo)',
' adapts(IBar)',
])
with warnings.catch_warnings(record=True) as log:
warnings.resetwarnings()
try:
exec(CODE, globs, locs)
except TypeError:
if not PYTHON3:
self.assertEqual(len(log), 0) # no longer warn
else:
self.fail("Didn't raise TypeError")
def test_called_once_from_class(self):
from zope.component._declaration import adapts
from zope.interface import Interface
class IFoo(Interface):
pass
globs = {'adapts': adapts, 'IFoo': IFoo}
locs = {}
CODE = "\n".join([
'class Foo(object):',
' adapts(IFoo)',
])
if self._run_generated_code(CODE, globs, locs):
Foo = locs['Foo']
spec = Foo.__component_adapts__
self.assertEqual(list(spec), [IFoo])
class Test_adaptedBy(unittest.TestCase):
def _callFUT(self, obj):
from zope.component._declaration import adaptedBy
return adaptedBy(obj)
def test_obj_w_no_attr(self):
self.assertEqual(self._callFUT(object()), None)
def test__call___w_class(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
class Baz(object):
__component_adapts__ = (IFoo, IBar)
self.assertEqual(self._callFUT(Baz), (IFoo, IBar))
def test__call___w_inst_of_decorated_class(self):
from zope.interface import Interface
from zope.component._declaration import _adapts_descr
class IFoo(Interface):
pass
class IBar(Interface):
pass
class Baz(object):
__component_adapts__ = _adapts_descr((IFoo, IBar))
baz = Baz()
self.assertEqual(self._callFUT(baz), None)
def test__call___w_non_class(self):
from zope.interface import Interface
class IFoo(Interface):
pass
class IBar(Interface):
pass
class Baz(object):
pass
baz = Baz()
baz.__component_adapts__ = (IFoo, IBar)
self.assertEqual(self._callFUT(baz), (IFoo, IBar))
def test_suite():
return unittest.TestSuite((
unittest.makeSuite(Test_adapter),
unittest.makeSuite(Test_adapts),
unittest.makeSuite(Test_adaptedBy),
))