From cbdc36976c18a0812f921ee3b7b92ed2dd823ed0 Mon Sep 17 00:00:00 2001
From: Chris McDonough <chrism@agendaless.com>
Date: Sun, 28 Sep 2008 02:17:36 +0000
Subject:   Features

   - A ``repoze.bfg.location`` API module was added.

  Backwards incompatibilities

   - Applications must now use the ``repoze.bfg.interfaces.ILocation``
     interface rather than ``zope.location.interfaces.ILocation`` to
     represent that a model object is "location-aware".  We've removed
     a dependency on ``zope.location`` for cleanliness purposes: as
     new versions of zope libraries are released which have improved
     dependency information, getting rid of our dependence on
     ``zope.location`` will prevent a newly installed repoze.bfg
     application from requiring the ``zope.security``, egg, which not
     truly used at all in a "stock" repoze.bfg setup.  These
     dependencies are still required by the stack at this time; this
     is purely a futureproofing move.

     The security and model documentation for previous versions of
     ``repoze.bfg`` recommended using the
     ``zope.location.interfaces.ILocation`` interface to represent
     that a model object is "location-aware".  This documentation has
     been changed to reflect that this interface should now be
     imported from ``repoze.bfg.interfaces.ILocation`` instead.
---
 repoze/bfg/tests/test_location.py | 82 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 repoze/bfg/tests/test_location.py

(limited to 'repoze/bfg/tests/test_location.py')

diff --git a/repoze/bfg/tests/test_location.py b/repoze/bfg/tests/test_location.py
new file mode 100644
index 000000000..fc8f8c621
--- /dev/null
+++ b/repoze/bfg/tests/test_location.py
@@ -0,0 +1,82 @@
+import unittest
+
+class TestLocation(unittest.TestCase):
+    def test_inside(self):
+        o1 = Location()
+        o2 = Location(); o2.__parent__ = o1
+        o3 = Location(); o3.__parent__ = o2
+        o4 = Location(); o4.__parent__ = o3
+
+        from repoze.bfg.location import inside
+        self.assertEqual(inside(o1, o1), True)
+        self.assertEqual(inside(o2, o1), True)
+        self.assertEqual(inside(o3, o1), True)
+        self.assertEqual(inside(o4, o1), True)
+        self.assertEqual(inside(o1, o4), False)
+        self.assertEqual(inside(o1, None), False)
+
+    def test_locate(self):
+        from repoze.bfg.location import locate
+        from repoze.bfg.location import LocationProxy
+        
+        a = Location()
+        parent = Location()
+        a_located = locate(a, parent, 'a')
+        self.failUnless(a_located is a)
+        self.failUnless(a_located.__parent__ is parent)
+        self.assertEqual(a_located.__name__, 'a')
+        # If we locate the object again, nothing special happens:
+
+        a_located_2 = locate(a_located, parent, 'a')
+        self.failUnless(a_located_2 is a_located)
+
+        # If the object does not provide ILocation a LocationProxy is returned:
+
+        l = [1, 2, 3]
+        parent = Location()
+        l_located = locate(l, parent, 'l')
+        self.assertEqual(l_located, [1, 2, 3])
+        self.failUnless(l_located.__parent__ is parent)
+        self.assertEqual(l_located.__name__, 'l')
+        self.failIf(l_located is l)
+        self.assertEqual(type(l_located), LocationProxy)
+
+        l_located_2 = locate(l_located, parent, 'l')
+        self.failUnless(l_located_2 is l_located)
+        # When changing the name, we still do not get a different proxied
+        # object:
+
+        l_located_3 = locate(l_located, parent, 'new-name')
+        self.failUnless(l_located_3 is l_located_2)
+
+    def test_LocationProxy(self):
+        from repoze.bfg.location import LocationProxy
+        from repoze.bfg.interfaces import ILocation
+        l = [1, 2, 3]
+        self.assertEqual(ILocation.providedBy(l), False)
+        p = LocationProxy(l, "Dad", "p")
+        self.assertEqual(p, [1, 2, 3])
+        self.assertEqual(ILocation.providedBy(p), True)
+        self.assertEqual(p.__parent__, 'Dad')
+        self.assertEqual(p.__name__, 'p')
+        import pickle
+        self.assertRaises(TypeError, pickle.dumps, p)
+        # Proxies should get their doc strings from the object they proxy:
+        self.assertEqual(p.__doc__, l.__doc__)
+
+    def test_lineage(self):
+        from repoze.bfg.location import lineage
+        o1 = Location()
+        o2 = Location(); o2.__parent__ = o1
+        o3 = Location(); o3.__parent__ = o2
+        o4 = Location(); o4.__parent__ = o3
+        result = list(lineage(o3))
+        self.assertEqual(result, [o3, o2, o1])
+        result = list(lineage(o1))
+        self.assertEqual(result, [o1])
+
+from repoze.bfg.interfaces import ILocation
+from zope.interface import implements
+class Location(object):
+    implements(ILocation)
+    __name__ = __parent__ = None
-- 
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