Fixed issue #118: "Handle lambda section values returning non-ascii, non-unicode"

See--

  https://github.com/defunkt/pystache/issues/118

HISTORY.rst

@@ -8,6 +8,7 @@ History
   ``Renderer(missing_tags='strict')`` (issue #110).
 * Bugfix: exceptions raised from a property are no longer swallowed when
   getting a key from a context stack (issue #110).
+* Bugfix: lambda section values can now return non-ascii, non-unicode strings (issue #118).
 
 0.5.2 (2012-05-03)
 ------------------

pystache/renderengine.py

@@ -220,6 +220,8 @@ class RenderEngine(object):
                     #
                     # TODO: should we check the arity?
                     new_template = element(template[section_start_index:section_end_index])
+                    # Make sure we are dealing with a unicode template string.
+                    new_template = self.literal(new_template)
                     new_parsed_template = self._parse(new_template, delimiters=delims)
                     parts.append(new_parsed_template.render(context))
                     continue

pystache/tests/test_renderengine.py

@@ -473,6 +473,23 @@ class RenderTests(unittest.TestCase, AssertStringMixin, AssertExceptionMixin):
         context = {'test': (lambda text: 'Hi %s' % text)}
         self._assert_render(u'Hi Mom', template, context)
 
+    def test_section__lambda__returning_nonascii_nonunicode(self):
+        """
+        Test a lambda section value returning a non-ascii, non-unicode string.
+
+        """
+        def literal(s):
+            if isinstance(s, unicode):
+                return s
+            return unicode(s, encoding='utf8')
+
+        engine = self._engine()
+        engine.literal = literal
+
+        template = '{{#lambda}}{{/lambda}}'
+        context = {'lambda': lambda text: u'abcdé'.encode('utf-8')}
+        self._assert_render(u'abcdé', template, context, engine=engine)
+
     def test_section__iterable(self):
         """
         Check that objects supporting iteration (aside from dicts) behave like lists.