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##############################################################################
#
# Copyright (c) 2001, 2002 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.
#
##############################################################################
"""Unit Test Fixtures
$Id: unitfixtures.py 110536 2010-04-06 02:59:44Z tseaver $
"""
from zope.interface import Interface, invariant
from zope.interface.interface import Attribute
from zope.interface.exceptions import Invalid
class mytest(Interface):
pass
class C(object):
def m1(self, a, b):
"return 1"
return 1
def m2(self, a, b):
"return 2"
return 2
# testInstancesOfClassImplements
# YAGNI IC=Interface.impliedInterface(C)
class IC(Interface):
def m1(a, b):
"return 1"
def m2(a, b):
"return 2"
C.__implemented__=IC
class I1(Interface):
def ma():
"blah"
class I2(I1): pass
class I3(Interface): pass
class I4(Interface): pass
class A(I1.deferred()):
__implemented__=I1
class B(object):
__implemented__=I2, I3
class D(A, B): pass
class E(A, B):
__implemented__ = A.__implemented__, C.__implemented__
class FooInterface(Interface):
""" This is an Abstract Base Class """
foobar = Attribute("fuzzed over beyond all recognition")
def aMethod(foo, bar, bingo):
""" This is aMethod """
def anotherMethod(foo=6, bar="where you get sloshed", bingo=(1,3,)):
""" This is anotherMethod """
def wammy(zip, *argues):
""" yadda yadda """
def useless(**keywords):
""" useless code is fun! """
class Foo(object):
""" A concrete class """
__implemented__ = FooInterface,
foobar = "yeah"
def aMethod(self, foo, bar, bingo):
""" This is aMethod """
return "barf!"
def anotherMethod(self, foo=6, bar="where you get sloshed", bingo=(1,3,)):
""" This is anotherMethod """
return "barf!"
def wammy(self, zip, *argues):
""" yadda yadda """
return "barf!"
def useless(self, **keywords):
""" useless code is fun! """
return "barf!"
foo_instance = Foo()
class Blah(object):
pass
new = Interface.__class__
FunInterface = new('FunInterface')
BarInterface = new('BarInterface', [FunInterface])
BobInterface = new('BobInterface')
BazInterface = new('BazInterface', [BobInterface, BarInterface])
# fixtures for invariant tests
def ifFooThenBar(obj):
if getattr(obj, 'foo', None) and not getattr(obj, 'bar', None):
raise Invalid('If Foo, then Bar!')
class IInvariant(Interface):
foo = Attribute('foo')
bar = Attribute('bar; must eval to Boolean True if foo does')
invariant(ifFooThenBar)
def BarGreaterThanFoo(obj):
foo = getattr(obj, 'foo', None)
bar = getattr(obj, 'bar', None)
if foo is not None and isinstance(foo, type(bar)):
# type checking should be handled elsewhere (like, say,
# schema); these invariants should be intra-interface
# constraints. This is a hacky way to do it, maybe, but you
# get the idea
if not bar > foo:
raise Invalid('Please, Boo MUST be greater than Foo!')
class ISubInvariant(IInvariant):
invariant(BarGreaterThanFoo)
class InvariantC(object):
pass
