[pypy-commit] pypy default: Add undocumented _PyString_Join function and test

[lambacck]

Author: Chris Lambacher <chris at kateandchris.net>
Branch: 
Changeset: r45753:1a887e1b99cc
Date: 2011-07-19 22:37 -0400
http://bitbucket.org/pypy/pypy/changeset/1a887e1b99cc/

Log:	Add undocumented _PyString_Join function and test

diff --git a/pypy/module/cpyext/stringobject.py b/pypy/module/cpyext/stringobject.py
--- a/pypy/module/cpyext/stringobject.py
+++ b/pypy/module/cpyext/stringobject.py
@@ -268,3 +268,7 @@
     if errors:
         w_errors = space.wrap(rffi.charp2str(errors))
     return space.call_method(w_str, 'encode', w_encoding, w_errors)
+
+ at cpython_api([PyObject, PyObject], PyObject)
+def _PyString_Join(space, w_sep, w_seq):
+    return space.call_method(w_sep, 'join', w_seq)
diff --git a/pypy/module/cpyext/test/test_stringobject.py b/pypy/module/cpyext/test/test_stringobject.py
--- a/pypy/module/cpyext/test/test_stringobject.py
+++ b/pypy/module/cpyext/test/test_stringobject.py
@@ -287,3 +287,9 @@
     def test_eq(self, space, api):
         assert 1 == api._PyString_Eq(space.wrap("hello"), space.wrap("hello"))
         assert 0 == api._PyString_Eq(space.wrap("hello"), space.wrap("world"))
+
+    def test_join(self, space, api):
+        w_sep = space.wrap('<sep>')
+        w_seq = space.wrap(['a', 'b'])
+        w_joined = api._PyString_Join(w_sep, w_seq)
+        assert space.unwrap(w_joined) == 'a<sep>b'