[Zope3-checkins] CVS: Zope3/src/zope/tales/tests - test_expressions.py:1.4

[Stephan Richter]

Update of /cvs-repository/Zope3/src/zope/tales/tests
In directory cvs.zope.org:/tmp/cvs-serv13611/src/zope/tales/tests

Modified Files:
	test_expressions.py 
Log Message:
Now TALES namesspaces have access to the context (engine) of the program.
This way they can use 'request' and all other defined variables. All name-
spaces have to implement 'ITALESFunctionNamespace' now. 

Currently the interface only specifies a setEngine() method, which is not
that user friendly. We might want to make a couple convinience methods 
available aas well later.


=== Zope3/src/zope/tales/tests/test_expressions.py 1.3 => 1.4 ===
--- Zope3/src/zope/tales/tests/test_expressions.py:1.3	Thu May  1 15:35:50 2003
+++ Zope3/src/zope/tales/tests/test_expressions.py	Tue Sep 16 18:11:27 2003
@@ -11,9 +11,15 @@
 # FOR A PARTICULAR PURPOSE.
 #
 ##############################################################################
+"""Default TALES expression implementations tests.
+
+$Id$
+"""
 import unittest
 
 from zope.tales.engine import Engine
+from zope.tales.interfaces import ITALESFunctionNamespace
+from zope.interface import implements
 
 class Data:
 
@@ -127,10 +133,17 @@
 
         # a test namespace
         class TestNameSpace:
+            implements(ITALESFunctionNamespace)
 
             def __init__(self, context):
                 self.context = context
 
+            def setEngine(self, engine):
+                self._engine = engine
+
+            def engine(self):
+                return self._engine
+
             def upper(self):
                 return str(self.context).upper()
 
@@ -143,7 +156,11 @@
         self.engine.registerFunctionNamespace('namespace',self.TestNameSpace)
 
     ## framework-ish tests
-        
+
+    def testSetEngine(self):
+        expr = self.engine.compile('adapterTest/namespace:engine')
+        self.assertEqual(expr(self.context), self.engine)
+                
     def testGetFunctionNamespace(self):
         self.assertEqual(
             self.engine.getFunctionNamespace('namespace'),