[pypy-commit] pypy default: a test for 2868163b3dc4

[fijal]

Author: Maciej Fijalkowski <fijall at gmail.com>
Branch: 
Changeset: r47239:e19cad73e3c7
Date: 2011-09-13 10:26 +0200
http://bitbucket.org/pypy/pypy/changeset/e19cad73e3c7/

Log:	a test for 2868163b3dc4

diff --git a/pypy/rpython/test/test_rbuilder.py b/pypy/rpython/test/test_rbuilder.py
--- a/pypy/rpython/test/test_rbuilder.py
+++ b/pypy/rpython/test/test_rbuilder.py
@@ -101,6 +101,23 @@
         res = self.interpret(func, [1])
         assert res
 
+    def test_unicode_builder_or_none(self):
+        def g(s):
+            if s:
+                s.append(u"3")
+            return bool(s)
+        
+        def func(i):
+            if i:
+                s = UnicodeBuilder()
+            else:
+                s = None
+            return g(s)
+        res = self.interpret(func, [0])
+        assert not res
+        res = self.interpret(func, [1])
+        assert res
+
 
 class TestLLtype(BaseTestStringBuilder, LLRtypeMixin):
     pass