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Added tests for cursor scroll

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This commit is contained in:
Daniele Varrazzo 2011-12-26 20:06:23 +01:00
parent 7990425801
commit ede0e145dd
1 changed files with 49 additions and 0 deletions
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49
tests/test_cursor.py
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@ -284,6 +284,55 @@ class CursorTests(unittest.TestCase):
self.assertEqual([(2,), (3,), (4,)], cur2.fetchmany(3))
self.assertEqual([(5,), (6,), (7,)], cur2.fetchall())
@skip_before_postgres(8, 0)
def test_scroll(self):
cur = self.conn.cursor()
cur.execute("select generate_series(0,9)")
cur.scroll(2)
self.assertEqual(cur.fetchone(), (2,))
cur.scroll(2)
self.assertEqual(cur.fetchone(), (5,))
cur.scroll(2, mode='relative')
self.assertEqual(cur.fetchone(), (8,))
cur.scroll(-1)
self.assertEqual(cur.fetchone(), (8,))
cur.scroll(-2)
self.assertEqual(cur.fetchone(), (7,))
cur.scroll(2, mode='absolute')
self.assertEqual(cur.fetchone(), (2,))
# on the boundary
cur.scroll(0, mode='absolute')
self.assertEqual(cur.fetchone(), (0,))
self.assertRaises((IndexError, psycopg2.ProgrammingError),
cur.scroll, -1, mode='absolute')
cur.scroll(0, mode='absolute')
self.assertRaises((IndexError, psycopg2.ProgrammingError),
cur.scroll, -1)
cur.scroll(9, mode='absolute')
self.assertEqual(cur.fetchone(), (9,))
self.assertRaises((IndexError, psycopg2.ProgrammingError),
cur.scroll, 10, mode='absolute')
cur.scroll(9, mode='absolute')
self.assertRaises((IndexError, psycopg2.ProgrammingError),
cur.scroll, 1)
@skip_before_postgres(8, 0)
def test_scroll_named(self):
cur = self.conn.cursor()
cur.execute("select generate_series(0,9)")
cur.scroll(2)
self.assertEqual(cur.fetchone(), (2,))
cur.scroll(2)
self.assertEqual(cur.fetchone(), (5,))
cur.scroll(2, mode='relative')
self.assertEqual(cur.fetchone(), (8,))
cur.scroll(9, mode='absolute')
self.assertEqual(cur.fetchone(), (9,))
self.assertRaises((IndexError, psycopg2.ProgrammingError),
cur.scroll, 10, mode='absolute')
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)