[Checkins] SVN: Zope3/trunk/src/zope/app/container/ Fix a small bug in the order container.

[Stephan Richter]

Log message for revision 71677:
  Fix a small bug in the order container.
  

Changed:
  U   Zope3/trunk/src/zope/app/container/ordered.py
  U   Zope3/trunk/src/zope/app/container/tests/test_ordered.py

-=-
Modified: Zope3/trunk/src/zope/app/container/ordered.py
===================================================================
--- Zope3/trunk/src/zope/app/container/ordered.py	2006-12-29 16:23:00 UTC (rev 71676)
+++ Zope3/trunk/src/zope/app/container/ordered.py	2006-12-29 22:07:05 UTC (rev 71677)
@@ -191,17 +191,21 @@
                 bad = True
         else:
             bad = True
-        if bad: 
+        if bad:
             raise TypeError("'%s' is invalid, the key must be an "
                             "ascii or unicode string" % key)
         if len(key) == 0:
             raise ValueError("The key cannot be an empty string")
 
-        setitem(self, self._data.__setitem__, key, object)
-
+        # We have to first update the order, so that the item is available,
+        # otherwise most API functions will lie about their available values
+        # when an event subscriber tries to do something with the container.
         if not existed:
             self._order.append(key)
 
+        # This function creates a lot of events that other code listens to.
+        setitem(self, self._data.__setitem__, key, object)
+
         return key
 
     def __delitem__(self, key):

Modified: Zope3/trunk/src/zope/app/container/tests/test_ordered.py
===================================================================
--- Zope3/trunk/src/zope/app/container/tests/test_ordered.py	2006-12-29 16:23:00 UTC (rev 71676)
+++ Zope3/trunk/src/zope/app/container/tests/test_ordered.py	2006-12-29 22:07:05 UTC (rev 71677)
@@ -60,6 +60,35 @@
         >>> setup.placefulTearDown()
     """
 
+def test_all_items_available_at_object_added_event():
+    """
+    Prepare the setup::
+
+        >>> root = setup.placefulSetUp(site=True)
+
+    Now register an event subscriber to object added events.
+
+        >>> import zope.component
+        >>> from zope.app.container import interfaces
+
+        >>> @zope.component.adapter(interfaces.IObjectAddedEvent)
+        ... def printContainerKeys(event):
+        ...     print event.newParent.keys()
+
+        >>> zope.component.provideHandler(printContainerKeys)
+
+    Now we are adding an object to the container. 
+
+        >>> from zope.app.container.ordered import OrderedContainer
+        >>> oc = OrderedContainer()
+        >>> oc['foo'] = 'FOO'
+        ['foo']
+
+    Finally, tear down::
+
+        >>> setup.placefulTearDown()
+    """
+
 def test_suite():
     suite = unittest.TestSuite()
     suite.addTest(DocTestSuite("zope.app.container.ordered",