[Zope3-checkins] CVS: Zope3/src/zope/app/tests - test_decorator.py:1.2

[Jim Fulton]

Update of /cvs-repository/Zope3/src/zope/app/tests
In directory cvs.zope.org:/tmp/cvs-serv15421/src/zope/app/tests

Added Files:
	test_decorator.py 
Log Message:
Factored out decorator descriptors into separate module.


=== Zope3/src/zope/app/tests/test_decorator.py 1.1 => 1.2 ===
--- /dev/null	Sun Sep 21 13:33:33 2003
+++ Zope3/src/zope/app/tests/test_decorator.py	Sun Sep 21 13:33:33 2003
@@ -0,0 +1,227 @@
+##############################################################################
+#
+# Copyright (c) 2003 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.0 (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.
+#
+##############################################################################
+"""Context Tests
+
+$Id$
+"""
+
+import pickle
+import unittest
+from zope.app.decorator import Decorator
+from zope.interface import Interface, implements, directlyProvides, providedBy
+from zope.interface import directlyProvidedBy, implementedBy
+from zope.testing.doctestunit import DocTestSuite
+from zope.exceptions import ForbiddenAttribute
+
+class I1(Interface):
+    pass
+class I2(Interface):
+    pass
+class I3(Interface):
+    pass
+class I4(Interface):
+    pass
+
+class D1(Decorator):
+  implements(I1)
+
+class D2(Decorator):
+  implements(I2)
+
+
+def check_forbidden_call(callable, *args):
+    try:
+        return callable(*args)
+    except ForbiddenAttribute, e:
+        return 'ForbiddenAttribute: %s' % e[0]
+
+
+def test_providedBy_iter_w_new_style_class():
+    """
+    >>> class X(object):
+    ...   implements(I3)
+
+    >>> x = X()
+    >>> directlyProvides(x, I4)
+
+    >>> [interface.getName() for interface in list(providedBy(x))]
+    ['I4', 'I3']
+
+    >>> [interface.getName() for interface in list(providedBy(D1(x)))]
+    ['I4', 'I3', 'I1']
+
+    >>> [interface.getName() for interface in list(providedBy(D2(D1(x))))]
+    ['I4', 'I3', 'I1', 'I2']
+    """
+
+def test_providedBy_signature_w_new_style_class():
+    """
+    >>> class X(object):
+    ...   implements(I3)
+
+    >>> x = X()
+
+    >>> int(providedBy(x).__signature__ == implementedBy(X).__signature__)
+    1
+
+    >>> int(providedBy(Decorator(x)).__signature__ ==
+    ...     implementedBy(X).__signature__)
+    1
+
+    >>> directlyProvides(x, I4)    
+    >>> int(providedBy(x).__signature__ ==
+    ...      (directlyProvidedBy(x).__signature__,
+    ...       implementedBy(X).__signature__,
+    ...      )
+    ...     )
+    1
+
+    >>> int(providedBy(D1(x)).__signature__ ==
+    ...      (
+    ...       (directlyProvidedBy(x).__signature__,
+    ...        implementedBy(X).__signature__,
+    ...       ),
+    ...       implementedBy(D1).__signature__,
+    ...      )
+    ...     )
+    1
+
+    >>> int(providedBy(D2(D1(x))).__signature__ ==
+    ...       (
+    ...        (
+    ...         (directlyProvidedBy(x).__signature__,
+    ...          implementedBy(X).__signature__,
+    ...         ),
+    ...         implementedBy(D1).__signature__,
+    ...        ),
+    ...        implementedBy(D2).__signature__,
+    ...       )
+    ...     )
+    1
+
+    """
+
+def test_providedBy_signature_w_classic_class():
+    """
+    >>> class X:
+    ...   implements(I3)
+
+    >>> x = X()
+
+
+    >>> int(providedBy(x).__signature__ == implementedBy(X).__signature__)
+    1
+
+    >>> int(providedBy(Decorator(x)).__signature__ ==
+    ...     implementedBy(X).__signature__)
+    1
+
+    >>> directlyProvides(x, I4)
+
+    >>> int(providedBy(x).__signature__ ==
+    ...      (directlyProvidedBy(x).__signature__,
+    ...       implementedBy(X).__signature__,
+    ...      )
+    ...     )
+    1
+
+    >>> int(providedBy(D1(x)).__signature__ ==
+    ...      (
+    ...       (directlyProvidedBy(x).__signature__,
+    ...        implementedBy(X).__signature__,
+    ...       ),
+    ...       implementedBy(D1).__signature__,
+    ...      )
+    ...     )
+    1
+
+    >>> int(providedBy(D2(D1(x))).__signature__ ==
+    ...       (
+    ...        (
+    ...         (directlyProvidedBy(x).__signature__,
+    ...          implementedBy(X).__signature__,
+    ...         ),
+    ...         implementedBy(D1).__signature__,
+    ...        ),
+    ...        implementedBy(D2).__signature__,
+    ...       )
+    ...     )
+    1
+
+    """
+
+class Thing:
+    pass
+
+def test_SecurityCheckerDescriptor():
+    """Descriptor for a Decorator that provides a decorated security checker.
+
+    >>> from zope.security.checker import defineChecker, NamesChecker, NoProxy
+    >>> from zope.app.decorator import DecoratedSecurityCheckerDescriptor
+    >>> class MyDecorator(Decorator):
+    ...     __Security_checker__ = DecoratedSecurityCheckerDescriptor()
+
+    >>> class Foo:
+    ...     a = 1
+    ...     b = 2
+    ...     c = 3
+
+    >>> defineChecker(Foo, NamesChecker(['a']))
+    >>> defineChecker(MyDecorator, NoProxy)
+
+    >>> w = MyDecorator(Foo())
+    >>> from zope.security.checker import selectChecker
+    >>> print selectChecker(w)
+    None
+    >>> c = w.__Security_checker__
+    >>> print type(c)
+    <class 'zope.security.checker.Checker'>
+    >>> c.check_getattr(w, 'a')
+
+    >>> check_forbidden_call(c.check_getattr, w, 'b')
+    'ForbiddenAttribute: b'
+    >>> check_forbidden_call(c.check_getattr, w, 'c')
+    'ForbiddenAttribute: c'
+
+    >>> class MyDecorator2(Decorator):
+    ...     __Security_checker__ = DecoratedSecurityCheckerDescriptor()
+    >>> defineChecker(MyDecorator2, NamesChecker(['b']))
+    >>> w = MyDecorator2(Foo())
+    >>> c = w.__Security_checker__
+    >>> print type(c)
+    <class 'zope.security.checker.CombinedChecker'>
+    >>> c.check_getattr(w, 'a')
+
+    >>> c.check_getattr(w, 'b')
+
+    >>> check_forbidden_call(c.check_getattr, w, 'c')
+    'ForbiddenAttribute: c'
+
+    >>> w = MyDecorator(None)
+    >>> int(w.__Security_checker__ is None)
+    1
+    >>> w = MyDecorator2(None)
+    >>> type(w.__Security_checker__)
+    <class 'zope.security.checker.Checker'>
+    """
+
+
+def test_suite():
+    suite = DocTestSuite()
+    suite.addTest(DocTestSuite('zope.app.decorator'))
+    return suite
+
+
+if __name__ == '__main__':
+    unittest.main()