- add test to prove that a user folder flag cannot be acquired elsewhere

CHANGES.rst

@@ -6,6 +6,9 @@ For changes before version 3.0, see ``HISTORY.rst``.
 4.0b7 (unreleased)
 ------------------
 
+- add test to prove that a user folder flag cannot be acquired elsewhere
+  (`#7 <https://github.com/zopefoundation/AccessControl/issues/7>`_)
+
 - tighten basic auth string handling in ``BasicUserFolder.identify``
   (`#56 <https://github.com/zopefoundation/AccessControl/issues/56>`_)
 

src/AccessControl/tests/test_userfolder.py

@@ -176,3 +176,21 @@ def test__doAddUser_with_preencrypted_passwords(self):
         self.assertEqual(user.__, ENCRYPTED)
         self.assertTrue(uf._isPasswordEncrypted(user.__))
         self.assertTrue(pw_validate(user.__, PASSWORD))
+
+    def test_acquisition_influences_encryption(self):
+        from Acquisition import Implicit
+
+        class ImplicitContainer(Implicit):
+            pass
+
+        uf = self._makeOne()
+        fake_parent = ImplicitContainer()
+        wrapped_uf = uf.__of__(fake_parent)
+
+        # Make sure that acquisition works for this fixture
+        setattr(fake_parent, 'testflag', True)
+        self.assertTrue(wrapped_uf.testflag)
+
+        # The real test. Can we influence the ``encrypt_passwords`` flag?
+        setattr(fake_parent, 'encrypt_passwords', False)
+        self.assertTrue(wrapped_uf.encrypt_passwords)