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#!/usr/bin/env python
#
# test_fast_executemany.py - tests for fast executemany implementations
#
# Copyright (C) 2017-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
# Copyright (C) 2020 The Psycopg Team
#
# psycopg2 is free software: you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
# License for more details.
from datetime import date
from . import testutils
import unittest
import psycopg2
import psycopg2.extras
import psycopg2.extensions as ext
from psycopg2 import sql
class TestPaginate(unittest.TestCase):
def test_paginate(self):
def pag(seq):
return psycopg2.extras._paginate(seq, 100)
self.assertEqual(list(pag([])), [])
self.assertEqual(list(pag([1])), [[1]])
self.assertEqual(list(pag(range(99))), [list(range(99))])
self.assertEqual(list(pag(range(100))), [list(range(100))])
self.assertEqual(list(pag(range(101))), [list(range(100)), [100]])
self.assertEqual(
list(pag(range(200))), [list(range(100)), list(range(100, 200))])
self.assertEqual(
list(pag(range(1000))),
[list(range(i * 100, (i + 1) * 100)) for i in range(10)])
class FastExecuteTestMixin:
def setUp(self):
super().setUp()
cur = self.conn.cursor()
cur.execute("""create table testfast (
id serial primary key, date date, val int, data text)""")
class TestExecuteBatch(FastExecuteTestMixin, testutils.ConnectingTestCase):
def test_empty(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, val) values (%s, %s)",
[])
cur.execute("select * from testfast order by id")
self.assertEqual(cur.fetchall(), [])
def test_one(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, val) values (%s, %s)",
iter([(1, 10)]))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(1, 10)])
def test_tuples(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, date, val) values (%s, %s, %s)",
((i, date(2017, 1, i + 1), i * 10) for i in range(10)))
cur.execute("select id, date, val from testfast order by id")
self.assertEqual(cur.fetchall(),
[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
def test_many(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, val) values (%s, %s)",
((i, i * 10) for i in range(1000)))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
def test_composed(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
sql.SQL("insert into {0} (id, val) values (%s, %s)")
.format(sql.Identifier('testfast')),
((i, i * 10) for i in range(1000)))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
def test_pages(self):
cur = self.conn.cursor()
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, val) values (%s, %s)",
((i, i * 10) for i in range(25)),
page_size=10)
# last command was 5 statements
self.assertEqual(sum(c == ';' for c in cur.query.decode('ascii')), 4)
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(25)])
@testutils.skip_before_postgres(8, 0)
def test_unicode(self):
cur = self.conn.cursor()
ext.register_type(ext.UNICODE, cur)
snowman = "\u2603"
# unicode in statement
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, data) values (%%s, %%s) -- %s" % snowman,
[(1, 'x')])
cur.execute("select id, data from testfast where id = 1")
self.assertEqual(cur.fetchone(), (1, 'x'))
# unicode in data
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, data) values (%s, %s)",
[(2, snowman)])
cur.execute("select id, data from testfast where id = 2")
self.assertEqual(cur.fetchone(), (2, snowman))
# unicode in both
psycopg2.extras.execute_batch(cur,
"insert into testfast (id, data) values (%%s, %%s) -- %s" % snowman,
[(3, snowman)])
cur.execute("select id, data from testfast where id = 3")
self.assertEqual(cur.fetchone(), (3, snowman))
@testutils.skip_before_postgres(8, 2)
class TestExecuteValues(FastExecuteTestMixin, testutils.ConnectingTestCase):
def test_empty(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, val) values %s",
[])
cur.execute("select * from testfast order by id")
self.assertEqual(cur.fetchall(), [])
def test_one(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, val) values %s",
iter([(1, 10)]))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(1, 10)])
def test_tuples(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, date, val) values %s",
((i, date(2017, 1, i + 1), i * 10) for i in range(10)))
cur.execute("select id, date, val from testfast order by id")
self.assertEqual(cur.fetchall(),
[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
def test_dicts(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, date, val) values %s",
(dict(id=i, date=date(2017, 1, i + 1), val=i * 10, foo="bar")
for i in range(10)),
template='(%(id)s, %(date)s, %(val)s)')
cur.execute("select id, date, val from testfast order by id")
self.assertEqual(cur.fetchall(),
[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
def test_many(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, val) values %s",
((i, i * 10) for i in range(1000)))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
def test_composed(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
sql.SQL("insert into {0} (id, val) values %s")
.format(sql.Identifier('testfast')),
((i, i * 10) for i in range(1000)))
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
def test_pages(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, val) values %s",
((i, i * 10) for i in range(25)),
page_size=10)
# last statement was 5 tuples (one parens is for the fields list)
self.assertEqual(sum(c == '(' for c in cur.query.decode('ascii')), 6)
cur.execute("select id, val from testfast order by id")
self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(25)])
def test_unicode(self):
cur = self.conn.cursor()
ext.register_type(ext.UNICODE, cur)
snowman = "\u2603"
# unicode in statement
psycopg2.extras.execute_values(cur,
"insert into testfast (id, data) values %%s -- %s" % snowman,
[(1, 'x')])
cur.execute("select id, data from testfast where id = 1")
self.assertEqual(cur.fetchone(), (1, 'x'))
# unicode in data
psycopg2.extras.execute_values(cur,
"insert into testfast (id, data) values %s",
[(2, snowman)])
cur.execute("select id, data from testfast where id = 2")
self.assertEqual(cur.fetchone(), (2, snowman))
# unicode in both
psycopg2.extras.execute_values(cur,
"insert into testfast (id, data) values %%s -- %s" % snowman,
[(3, snowman)])
cur.execute("select id, data from testfast where id = 3")
self.assertEqual(cur.fetchone(), (3, snowman))
def test_returning(self):
cur = self.conn.cursor()
result = psycopg2.extras.execute_values(cur,
"insert into testfast (id, val) values %s returning id",
((i, i * 10) for i in range(25)),
page_size=10, fetch=True)
# result contains all returned pages
self.assertEqual([r[0] for r in result], list(range(25)))
def test_invalid_sql(self):
cur = self.conn.cursor()
self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
"insert", [])
self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
"insert %s and %s", [])
self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
"insert %f", [])
self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
"insert %f %s", [])
def test_percent_escape(self):
cur = self.conn.cursor()
psycopg2.extras.execute_values(cur,
"insert into testfast (id, data) values %s -- a%%b",
[(1, 'hi')])
self.assert_(b'a%%b' not in cur.query)
self.assert_(b'a%b' in cur.query)
cur.execute("select id, data from testfast")
self.assertEqual(cur.fetchall(), [(1, 'hi')])
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()
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