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import unittest
from kiwi.component import AlreadyImplementedError, Interface, \
get_utility, provide_utility, remove_utility, implements, utilities
class IBanana(Interface):
pass
class Obj(object): pass
o = Obj()
class TestUtilities(unittest.TestCase):
def tearDown(self):
utilities.clean()
def testGet(self):
self.assertEqual(None, get_utility(IBanana, None))
provide_utility(IBanana, o)
self.assertRaises(TypeError, get_utility, object)
self.assertEqual(get_utility(IBanana), o)
def testProvide(self):
self.assertRaises(NotImplementedError, get_utility, IBanana)
provide_utility(IBanana, o)
self.assertRaises(TypeError, provide_utility, object, o)
def testRemove(self):
self.assertRaises(NotImplementedError, remove_utility, IBanana)
provide_utility(IBanana, o)
self.assertEqual(remove_utility(IBanana), o)
self.assertRaises(NotImplementedError, remove_utility, IBanana)
def testAlreadyImplemented(self):
self.assertRaises(NotImplementedError, get_utility, IBanana)
provide_utility(IBanana, o)
self.assertRaises(AlreadyImplementedError,
provide_utility, IBanana, o)
def testZopeInterface(self):
try:
from zope.interface import Interface
except ImportError:
return
class IApple(Interface):
pass
self.assertRaises(NotImplementedError, get_utility, IApple)
provide_utility(IApple, o)
self.assertRaises(AlreadyImplementedError,
provide_utility, IApple, o)
def testImplements(self):
class I1(Interface):
pass
class C(object):
implements(I1)
c = C()
class X(object):
pass
x = X()
self.assertEqual(I1.providedBy(x), False)
#self.assertEqual(I1.providedBy(C), False)
self.assertEqual(I1.providedBy(c), True)
def testInterfaceSub(self):
class I1(Interface):
pass
class I2(I1):
pass
class C(object):
implements(I2)
class D(object):
implements(I1)
c = C()
self.assertEqual(I1.providedBy(c), True)
self.assertEqual(I2.providedBy(c), True)
d = D()
self.assertEqual(I1.providedBy(d), True)
self.assertEqual(I2.providedBy(d), False)
def testZImplements(self):
try:
from zope.interface import Interface, implements
except ImportError:
return
class I1(Interface):
pass
class C(object):
implements(I1)
c = C()
class X(object):
pass
x = X()
self.assertEqual(I1.providedBy(x), False)
self.assertEqual(I1.providedBy(C), False)
self.assertEqual(I1.providedBy(c), True)
def testZInterfaceSub(self):
try:
from zope.interface import Interface, implements
except ImportError:
return
class I1(Interface):
pass
class I2(I1):
pass
class C(object):
implements(I2)
class D(object):
implements(I1)
c = C()
self.assertEqual(I1.providedBy(c), True)
self.assertEqual(I2.providedBy(c), True)
d = D()
self.assertEqual(I1.providedBy(d), True)
self.assertEqual(I2.providedBy(d), False)
if __name__ == '__main__':
unittest.main()
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