[Sqlalchemy-tickets] Issue #3329: fetchmany() fails on bufferedcolproxy on second call w/ no rows (zzzeek/sqlalchemy)

[Mike B. <iss...@bi...>]

New issue 3329: fetchmany() fails on bufferedcolproxy on second call w/ no rows
https://bitbucket.org/zzzeek/sqlalchemy/issue/3329/fetchmany-fails-on-bufferedcolproxy-on

Mike Bayer:


```
#!diff

diff --git a/test/engine/test_execute.py b/test/engine/test_execute.py
index 730ef44..a5318c0 100644
--- a/test/engine/test_execute.py
+++ b/test/engine/test_execute.py
@@ -1070,6 +1070,9 @@ class AlternateResultProxyTest(fixtures.TestBase):
         rows = r.fetchmany(6)
         eq_(rows, [(i, "t_%d" % i) for i in range(1, 6)])
 
+        rows = r.fetchmany(2)
+        eq_(rows, [])
+
     def test_plain(self):
         self._test_proxy(_result.ResultProxy)
 

```