[Checkins] SVN: Sandbox/faassen/iface/src/iface/ Set up some tests to explore compatibility with zope.interface,

[Martijn Faassen]

Log message for revision 107942:
  Set up some tests to explore compatibility with zope.interface, 
  in particular the AdapterRegistry.
  
  Right now we don't test very much yet.
  

Changed:
  A   Sandbox/faassen/iface/src/iface/compatibility.py
  A   Sandbox/faassen/iface/src/iface/compatibility.txt
  U   Sandbox/faassen/iface/src/iface/tests.py

-=-
Added: Sandbox/faassen/iface/src/iface/compatibility.py
===================================================================
--- Sandbox/faassen/iface/src/iface/compatibility.py	                        (rev 0)
+++ Sandbox/faassen/iface/src/iface/compatibility.py	2010-01-09 16:40:23 UTC (rev 107942)
@@ -0,0 +1,20 @@
+from iface import MapKey, MultiMap
+
+class ZopeInterfaceMapKey(MapKey):
+    def __init__(self, interface):
+        super(ZopeInterfaceMapKey, self).__init__(
+            interface, map(ZopeInterfaceMapKey, interface.__bases__))
+
+class CompatibilityAdapterRegistry(object):
+    def __init__(self):
+        self._map = MultiMap()
+        
+    def register(self, required, provided, name, value):
+        required = map(ZopeInterfaceMapKey, required)
+        self._map[required] = value
+
+    def lookup(self, required, provided, name='', default=None):
+        required = map(ZopeInterfaceMapKey, required)
+        return self._map[required]
+    
+    

Added: Sandbox/faassen/iface/src/iface/compatibility.txt
===================================================================
--- Sandbox/faassen/iface/src/iface/compatibility.txt	                        (rev 0)
+++ Sandbox/faassen/iface/src/iface/compatibility.txt	2010-01-09 16:40:23 UTC (rev 107942)
@@ -0,0 +1,26 @@
+Compatibility with zope.interface
+=================================
+
+The goal of iface to be behavior-compatible with zope.interface and
+zope.component. We also intend to eventually provide support for
+zope.interface. We test the backwards compatibility here. The idea is
+that this test is run twice, once with the AdapterRegistry from
+zope.interface, and once with the compatible
+CompatibilityAdapterRegistry provided by iface.
+
+  >>> from zope.interface import Interface
+  >>> class IA(Interface):
+  ...     pass
+  >>> class IB(IA):
+  ...     pass
+  >>> class IC(IA):
+  ...     pass
+  >>> class ID(IB, IC):
+  ...      pass
+  >>> class ILookup(Interface):
+  ...      "A simple interface to look up"
+
+  >>> reg = AdapterRegistry()
+  >>> reg.register((IA,), ILookup, '', u'Value for A')
+  >>> reg.lookup((IA,), ILookup)
+  u'Value for A'

Modified: Sandbox/faassen/iface/src/iface/tests.py
===================================================================
--- Sandbox/faassen/iface/src/iface/tests.py	2010-01-09 16:15:54 UTC (rev 107941)
+++ Sandbox/faassen/iface/src/iface/tests.py	2010-01-09 16:40:23 UTC (rev 107942)
@@ -1,12 +1,26 @@
 import unittest, doctest
 
+from zope.interface.adapter import AdapterRegistry
+from iface.compatibility import CompatibilityAdapterRegistry
+
 def test_suite():
     suite = unittest.TestSuite()
 
     optionflags = doctest.NORMALIZE_WHITESPACE + doctest.ELLIPSIS
 
     suite.addTests([
-            doctest.DocFileSuite('mapping.txt',
-                                 optionflags=optionflags)])
+            doctest.DocFileSuite(
+                'mapping.txt',
+                optionflags=optionflags),
+            doctest.DocFileSuite(
+                'compatibility.txt',
+                optionflags=optionflags,
+                globs=dict(AdapterRegistry=AdapterRegistry)),
+            doctest.DocFileSuite(
+                'compatibility.txt',
+                optionflags=optionflags,
+                globs=dict(AdapterRegistry=CompatibilityAdapterRegistry)),            
+            ])
+            
     return suite