extra test for corresponding column fix

1 files changed, 5 insertions, 0 deletions

diff --git a/test/sql/selectable.py b/test/sql/selectable.py
index 221d8430c..57ad99886 100755
--- a/test/sql/selectable.py
+++ b/test/sql/selectable.py
@@ -27,6 +27,11 @@ table2 = Table('table2', db,
 )

 

 class SelectableTest(testbase.AssertMixin):

+    def testjoinagainstself(self):

+        jj = select([table.c.col1.label('bar_col1')])

+        jjj = join(table, jj, table.c.col1==jj.c.bar_col1)

+        assert jjj.corresponding_column(jjj.c.table1_col1) is jjj.c.table1_col1

+

     def testjoinagainstjoin(self):

         j  = outerjoin(table, table2, table.c.col1==table2.c.col2)

         jj = select([ table.c.col1.label('bar_col1')],from_obj=[j]).alias('foo')