[Zope3-checkins] CVS: Zope3/src/zope/app/tests - test_context.py:1.3

[Steve Alexander]

Update of /cvs-repository/Zope3/src/zope/app/tests
In directory cvs.zope.org:/tmp/cvs-serv10642/src/zope/app/tests

Modified Files:
	test_context.py 
Log Message:
Implemented descriptor for __Security_checker__ of context wrappers.
This descriptor gets a checker for the wrapper and for the proxied object,
and returns a checker combined from both of those.
If either the wrapper or the proxied object has no checker defined, then
the checker for the proxied object or the wrapper is returned,
respectively.
If no checkers are defined, None is returned.


=== Zope3/src/zope/app/tests/test_context.py 1.2 => 1.3 ===
--- Zope3/src/zope/app/tests/test_context.py:1.2	Mon Jun  2 12:29:44 2003
+++ Zope3/src/zope/app/tests/test_context.py	Mon Jun  2 13:43:02 2003
@@ -44,16 +44,16 @@
     """
     >>> class X(object):
     ...   implements(I3)
-    
+
     >>> x = X()
     >>> directlyProvides(x, I4)
-    
+
     >>> [interface.__name__ for interface in list(providedBy(x))]
     ['I4', 'I3']
 
     >>> [interface.__name__ for interface in list(providedBy(D1(x)))]
     ['I4', 'I3', 'I1']
-    
+
     >>> [interface.__name__ for interface in list(providedBy(D2(D1(x))))]
     ['I4', 'I3', 'I1', 'I2']
     """
@@ -62,7 +62,7 @@
     """
     >>> class X(object):
     ...   implements(I3)
-    
+
     >>> x = X()
 
     >>> int(providedBy(x).__signature__ == implementedBy(X).__signature__)
@@ -71,7 +71,7 @@
     >>> int(providedBy(Wrapper(x)).__signature__ ==
     ...     implementedBy(X).__signature__)
     1
-    
+
     >>> directlyProvides(x, I4)    
     >>> int(providedBy(x).__signature__ ==
     ...      (directlyProvidedBy(x).__signature__,
@@ -79,7 +79,7 @@
     ...      )
     ...     )
     1
-    
+
     >>> int(providedBy(D1(x)).__signature__ ==
     ...      (
     ...       (directlyProvidedBy(x).__signature__,
@@ -89,7 +89,7 @@
     ...      )
     ...     )
     1
-    
+
     >>> int(providedBy(D2(D1(x))).__signature__ ==
     ...       (
     ...        (
@@ -109,7 +109,7 @@
     """
     >>> class X:
     ...   implements(I3)
-    
+
     >>> x = X()
 
 
@@ -121,14 +121,14 @@
     1
 
     >>> directlyProvides(x, I4)
-    
+
     >>> int(providedBy(x).__signature__ ==
     ...      (directlyProvidedBy(x).__signature__,
     ...       implementedBy(X).__signature__,
     ...      )
     ...     )
     1
-    
+
     >>> int(providedBy(D1(x)).__signature__ ==
     ...      (
     ...       (directlyProvidedBy(x).__signature__,
@@ -138,7 +138,7 @@
     ...      )
     ...     )
     1
-    
+
     >>> int(providedBy(D2(D1(x))).__signature__ ==
     ...       (
     ...        (
@@ -175,7 +175,7 @@
     1
     >>> getWrapperData(w2)
     {'name': 2}
-    
+
     >>> c3 = C('c3')
     >>> p3 = ProxyFactory(c3)
     >>> w3 = ContextWrapper(p3, w2, name=3)
@@ -192,7 +192,7 @@
     1
     >>> getWrapperData(w3)
     {'name': 'x'}
-    
+
     """
 
 class Thing:
@@ -225,10 +225,70 @@
     CustomPicklingError
     """
 
+def test_SecurityCheckerDescriptor():
+    """Descriptor for a Wrapper that provides a decorated security checker.
+
+    >>> from zope.security.checker import defineChecker, NamesChecker, NoProxy
+    >>> from zope.context import Wrapper
+    >>> from zope.app.context import DecoratedSecurityCheckerDescriptor
+    >>> class MyWrapper(Wrapper):
+    ...     __Security_checker__ = DecoratedSecurityCheckerDescriptor()
+
+    >>> class Foo:
+    ...     a = 1
+    ...     b = 2
+    ...     c = 3
+
+    >>> defineChecker(Foo, NamesChecker(['a']))
+    >>> defineChecker(MyWrapper, NoProxy)
+
+    >>> w = MyWrapper(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')
+
+    >>> c.check_getattr(w, 'b')
+    Traceback (most recent call last):
+    ...
+    ForbiddenAttribute: b
+    >>> c.check_getattr(w, 'c')
+    Traceback (most recent call last):
+    ...
+    ForbiddenAttribute: c
+
+    >>> class MyWrapper2(Wrapper):
+    ...     __Security_checker__ = DecoratedSecurityCheckerDescriptor()
+    >>> defineChecker(MyWrapper2, NamesChecker(['b']))
+    >>> w = MyWrapper2(Foo())
+    >>> c = w.__Security_checker__
+    >>> print type(c)
+    <class 'zope.security.checker.CombinedChecker'>
+    >>> c.check_getattr(w, 'a')
+
+    >>> c.check_getattr(w, 'b')
+
+    >>> c.check_getattr(w, 'c')
+    Traceback (most recent call last):
+    ...
+    ForbiddenAttribute: c
+
+    >>> w = MyWrapper(None)
+    >>> int(w.__Security_checker__ is None)
+    1
+    >>> w = MyWrapper2(None)
+    >>> type(w.__Security_checker__)
+    <class 'zope.security.checker.Checker'>
+    """
+
 def test_suite():
     suite = DocTestSuite()
     suite.addTest(DocTestSuite('zope.app.context'))
     return suite
 
 
-if __name__ == '__main__': unittest.main()
+if __name__ == '__main__':
+    unittest.main()