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##############################################################################
#
# Copyright (c) 2003 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 Interface accessor methods.
"""
import unittest
# pylint:disable=inherit-non-class
class FieldReadAccessorTests(unittest.TestCase):
def _getTargetClass(self):
from zope.schema.accessors import FieldReadAccessor
return FieldReadAccessor
def _makeOne(self, field=None):
from zope.schema import Text
if field is None:
field = Text(__name__='testing')
return self._getTargetClass()(field)
def test_ctor_not_created_inside_interface(self):
from zope.schema import Text
field = Text(title=u'Hmm')
wrapped = self._makeOne(field)
self.assertTrue(wrapped.field is field)
self.assertEqual(wrapped.__name__, '') # __name__ set when in iface
self.assertEqual(wrapped.__doc__, 'get Hmm')
def test_ctor_created_inside_interface(self):
from zope.interface import Interface
from zope.schema import Text
field = Text(title=u'Hmm')
class IFoo(Interface):
getter = self._makeOne(field)
getter = IFoo['getter']
self.assertEqual(getter.__name__, 'getter')
self.assertEqual(getter.__doc__, 'get Hmm')
def test___provides___w_field_no_provides(self):
from zope.interface import implementedBy
from zope.interface import providedBy
wrapped = self._makeOne(object())
self.assertEqual(list(providedBy(wrapped)),
list(implementedBy(self._getTargetClass())))
def test___provides___w_field_w_provides(self):
from zope.interface import implementedBy
from zope.interface import providedBy
from zope.interface.interfaces import IAttribute
from zope.interface.interfaces import IMethod
from zope.schema import Text
# When wrapping a field that provides stuff,
# we provide the same stuff, with the addition of
# IMethod at the correct spot in the IRO (just before
# IAttribute).
field = Text()
field_provides = list(providedBy(field))
wrapped = self._makeOne(field)
wrapped_provides = list(providedBy(wrapped))
index_of_attribute = field_provides.index(IAttribute)
expected = list(field_provides)
expected.insert(index_of_attribute, IMethod)
self.assertEqual(expected, wrapped_provides)
for iface in list(implementedBy(self._getTargetClass())):
self.assertIn(iface, wrapped_provides)
def test___provides___w_field_w_provides_strict(self):
from zope.interface import ro
attr = 'STRICT_IRO'
try:
getattr(ro.C3, attr)
except AttributeError: # pragma: no cover
# https://github.com/zopefoundation/zope.interface/issues/194
# zope.interface 5.0.0 used this incorrect spelling.
attr = 'STRICT_RO'
getattr(ro.C3, attr)
setattr(ro.C3, attr, True)
try:
self.test___provides___w_field_w_provides()
finally:
setattr(ro.C3, attr, getattr(ro.C3, 'ORIG_' + attr))
def test_getSignatureString(self):
wrapped = self._makeOne()
self.assertEqual(wrapped.getSignatureString(), '()')
def test_getSignatureInfo(self):
wrapped = self._makeOne()
info = wrapped.getSignatureInfo()
self.assertEqual(info['positional'], ())
self.assertEqual(info['required'], ())
self.assertEqual(info['optional'], ())
self.assertEqual(info['varargs'], None)
self.assertEqual(info['kwargs'], None)
def test_get_miss(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
pass
self.assertRaises(AttributeError, getter.get, Foo())
def test_get_hit(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
def getter(self):
return '123'
self.assertEqual(getter.get(Foo()), '123')
def test_query_miss_implicit_default(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
pass
self.assertEqual(getter.query(Foo()), None)
def test_query_miss_explicit_default(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
pass
self.assertEqual(getter.query(Foo(), 234), 234)
def test_query_hit(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
def getter(self):
return '123'
self.assertEqual(getter.query(Foo()), '123')
def test_set_readonly(self):
from zope.interface import Interface
from zope.schema import Text
field = Text(readonly=True)
class IFoo(Interface):
getter = self._makeOne(field)
getter = IFoo['getter']
class Foo(object):
def getter(self):
raise AssertionError("Not called")
self.assertRaises(TypeError, getter.set, Foo(), '456')
def test_set_no_writer(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
class Foo(object):
def getter(self):
raise AssertionError("Not called")
self.assertRaises(AttributeError, getter.set, Foo(), '456')
def test_set_w_writer(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
_called_with = []
class Writer(object):
pass
writer = Writer()
# pylint:disable=attribute-defined-outside-init
writer.__name__ = 'setMe'
# pylint:enable=attribute-defined-outside-init
getter.writer = writer
class Foo(object):
def setMe(self, value):
_called_with.append(value)
getter.set(Foo(), '456')
self.assertEqual(_called_with, ['456'])
def test_bind(self):
from zope.interface import Interface
class IFoo(Interface):
getter = self._makeOne()
getter = IFoo['getter']
context = object()
bound = getter.bind(context)
self.assertEqual(bound.__name__, 'getter')
self.assertTrue(isinstance(bound.field, getter.field.__class__))
self.assertTrue(bound.field.context is context)
class FieldWriteAccessorTests(unittest.TestCase):
def _getTargetClass(self):
from zope.schema.accessors import FieldWriteAccessor
return FieldWriteAccessor
def _makeOne(self, field=None):
from zope.schema import Text
if field is None:
field = Text(__name__='testing')
return self._getTargetClass()(field)
def test_ctor_not_created_inside_interface(self):
from zope.schema import Text
field = Text(title=u'Hmm')
wrapped = self._makeOne(field)
self.assertTrue(wrapped.field is field)
self.assertEqual(wrapped.__name__, '') # __name__ set when in iface
self.assertEqual(wrapped.__doc__, 'set Hmm')
def test_ctor_created_inside_interface(self):
from zope.interface import Interface
from zope.schema import Text
field = Text(title=u'Hmm')
class IFoo(Interface):
setter = self._makeOne(field)
setter = IFoo['setter']
self.assertEqual(setter.__name__, 'setter')
self.assertEqual(setter.__doc__, 'set Hmm')
def test_getSignatureString(self):
wrapped = self._makeOne()
self.assertEqual(wrapped.getSignatureString(), '(newvalue)')
def test_getSignatureInfo(self):
wrapped = self._makeOne()
info = wrapped.getSignatureInfo()
self.assertEqual(info['positional'], ('newvalue',))
self.assertEqual(info['required'], ('newvalue',))
self.assertEqual(info['optional'], ())
self.assertEqual(info['varargs'], None)
self.assertEqual(info['kwargs'], None)
class Test_accessors(unittest.TestCase):
def _callFUT(self, *args, **kw):
from zope.schema.accessors import accessors
return accessors(*args, **kw)
def test_w_only_read_accessor(self):
from zope.interface import Interface
from zope.schema import Text
field = Text(title=u'Hmm', readonly=True)
class IFoo(Interface):
getter, = self._callFUT(field)
getter = IFoo['getter']
self.assertEqual(getter.__name__, 'getter')
self.assertEqual(getter.__doc__, 'get Hmm')
self.assertEqual(getter.getSignatureString(), '()')
info = getter.getSignatureInfo()
self.assertEqual(info['positional'], ())
self.assertEqual(info['required'], ())
self.assertEqual(info['optional'], ())
self.assertEqual(info['varargs'], None)
self.assertEqual(info['kwargs'], None)
def test_w_read_and_write_accessors(self):
from zope.interface import Interface
from zope.schema import Text
field = Text(title=u'Hmm')
class IFoo(Interface):
getter, setter = self._callFUT(field)
getter = IFoo['getter']
self.assertEqual(getter.__name__, 'getter')
self.assertEqual(getter.getSignatureString(), '()')
info = getter.getSignatureInfo()
self.assertEqual(info['positional'], ())
self.assertEqual(info['required'], ())
self.assertEqual(info['optional'], ())
self.assertEqual(info['varargs'], None)
self.assertEqual(info['kwargs'], None)
setter = IFoo['setter']
self.assertEqual(setter.__name__, 'setter')
self.assertEqual(setter.getSignatureString(), '(newvalue)')
info = setter.getSignatureInfo()
self.assertEqual(info['positional'], ('newvalue',))
self.assertEqual(info['required'], ('newvalue',))
self.assertEqual(info['optional'], ())
self.assertEqual(info['varargs'], None)
self.assertEqual(info['kwargs'], None)
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