pypy3's sum takes a kwarg, unlike cpy3. anyways...

clastic/tests/test_meta.py

@@ -2,6 +2,7 @@
 from __future__ import unicode_literals
 
 import os
+import sys
 import json
 
 from clastic import Application, render_basic, StaticFileRoute, MetaApplication
@@ -16,6 +17,8 @@
 except:
     PY3 = True
 
+IS_PYPY = '__pypy__' in sys.builtin_module_names
+
 
 def test_meta_basic():
     app = Application([('/meta', MetaApplication()),
@@ -51,15 +54,15 @@ def ep_method(self):
               ('/callable_obj', obj, render_basic),
               StaticFileRoute('/file', _CUR_DIR + '/test_meta.py'),
               ('/meta', MetaApplication())]
-    if PY3:
+    if PY3 and not IS_PYPY:
         routes.append(('/builtin', sum, render_basic))
 
     app = Application(routes=routes,
                       resources={'iterable': [1, 2, 3], 'start': 0})
 
     cl = app.get_local_client()
     assert cl.get('/meta/').status_code == 200
-    if not PY3:
+    if not PY3 or IS_PYPY:
         return
 
     resp = cl.get('/meta/json/')