mirror of
https://github.com/psycopg/psycopg2.git
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d90ad8627d
Allows removing many duplicate imports and better follows PEP8 guidelines: https://www.python.org/dev/peps/pep-0008/#imports > Imports are always put at the top of the file, just after any module > comments and docstrings, and before module globals and constants.
269 lines
10 KiB
Python
Executable File
269 lines
10 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# test_fast_executemany.py - tests for fast executemany implementations
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#
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# Copyright (C) 2017-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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from datetime import date
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from . import testutils
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import unittest
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import psycopg2
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import psycopg2.extras
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import psycopg2.extensions as ext
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from psycopg2 import sql
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class TestPaginate(unittest.TestCase):
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def test_paginate(self):
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def pag(seq):
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return psycopg2.extras._paginate(seq, 100)
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self.assertEqual(list(pag([])), [])
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self.assertEqual(list(pag([1])), [[1]])
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self.assertEqual(list(pag(range(99))), [list(range(99))])
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self.assertEqual(list(pag(range(100))), [list(range(100))])
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self.assertEqual(list(pag(range(101))), [list(range(100)), [100]])
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self.assertEqual(
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list(pag(range(200))), [list(range(100)), list(range(100, 200))])
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self.assertEqual(
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list(pag(range(1000))),
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[list(range(i * 100, (i + 1) * 100)) for i in range(10)])
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class FastExecuteTestMixin(object):
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def setUp(self):
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super(FastExecuteTestMixin, self).setUp()
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cur = self.conn.cursor()
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cur.execute("""create table testfast (
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id serial primary key, date date, val int, data text)""")
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class TestExecuteBatch(FastExecuteTestMixin, testutils.ConnectingTestCase):
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def test_empty(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, val) values (%s, %s)",
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[])
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cur.execute("select * from testfast order by id")
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self.assertEqual(cur.fetchall(), [])
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def test_one(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, val) values (%s, %s)",
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iter([(1, 10)]))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(1, 10)])
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def test_tuples(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, date, val) values (%s, %s, %s)",
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((i, date(2017, 1, i + 1), i * 10) for i in range(10)))
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cur.execute("select id, date, val from testfast order by id")
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self.assertEqual(cur.fetchall(),
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[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
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def test_many(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, val) values (%s, %s)",
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((i, i * 10) for i in range(1000)))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
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def test_composed(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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sql.SQL("insert into {0} (id, val) values (%s, %s)")
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.format(sql.Identifier('testfast')),
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((i, i * 10) for i in range(1000)))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
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def test_pages(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, val) values (%s, %s)",
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((i, i * 10) for i in range(25)),
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page_size=10)
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# last command was 5 statements
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self.assertEqual(sum(c == u';' for c in cur.query.decode('ascii')), 4)
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(25)])
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@testutils.skip_before_postgres(8, 0)
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def test_unicode(self):
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cur = self.conn.cursor()
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ext.register_type(ext.UNICODE, cur)
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snowman = u"\u2603"
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# unicode in statement
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, data) values (%%s, %%s) -- %s" % snowman,
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[(1, 'x')])
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cur.execute("select id, data from testfast where id = 1")
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self.assertEqual(cur.fetchone(), (1, 'x'))
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# unicode in data
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, data) values (%s, %s)",
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[(2, snowman)])
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cur.execute("select id, data from testfast where id = 2")
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self.assertEqual(cur.fetchone(), (2, snowman))
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# unicode in both
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psycopg2.extras.execute_batch(cur,
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"insert into testfast (id, data) values (%%s, %%s) -- %s" % snowman,
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[(3, snowman)])
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cur.execute("select id, data from testfast where id = 3")
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self.assertEqual(cur.fetchone(), (3, snowman))
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@testutils.skip_before_postgres(8, 2)
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class TestExecuteValues(FastExecuteTestMixin, testutils.ConnectingTestCase):
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def test_empty(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, val) values %s",
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[])
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cur.execute("select * from testfast order by id")
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self.assertEqual(cur.fetchall(), [])
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def test_one(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, val) values %s",
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iter([(1, 10)]))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(1, 10)])
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def test_tuples(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, date, val) values %s",
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((i, date(2017, 1, i + 1), i * 10) for i in range(10)))
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cur.execute("select id, date, val from testfast order by id")
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self.assertEqual(cur.fetchall(),
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[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
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def test_dicts(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, date, val) values %s",
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(dict(id=i, date=date(2017, 1, i + 1), val=i * 10, foo="bar")
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for i in range(10)),
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template='(%(id)s, %(date)s, %(val)s)')
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cur.execute("select id, date, val from testfast order by id")
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self.assertEqual(cur.fetchall(),
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[(i, date(2017, 1, i + 1), i * 10) for i in range(10)])
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def test_many(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, val) values %s",
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((i, i * 10) for i in range(1000)))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
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def test_composed(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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sql.SQL("insert into {0} (id, val) values %s")
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.format(sql.Identifier('testfast')),
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((i, i * 10) for i in range(1000)))
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(1000)])
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def test_pages(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, val) values %s",
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((i, i * 10) for i in range(25)),
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page_size=10)
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# last statement was 5 tuples (one parens is for the fields list)
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self.assertEqual(sum(c == '(' for c in cur.query.decode('ascii')), 6)
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cur.execute("select id, val from testfast order by id")
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self.assertEqual(cur.fetchall(), [(i, i * 10) for i in range(25)])
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def test_unicode(self):
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cur = self.conn.cursor()
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ext.register_type(ext.UNICODE, cur)
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snowman = u"\u2603"
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# unicode in statement
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, data) values %%s -- %s" % snowman,
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[(1, 'x')])
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cur.execute("select id, data from testfast where id = 1")
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self.assertEqual(cur.fetchone(), (1, 'x'))
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# unicode in data
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, data) values %s",
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[(2, snowman)])
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cur.execute("select id, data from testfast where id = 2")
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self.assertEqual(cur.fetchone(), (2, snowman))
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# unicode in both
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, data) values %%s -- %s" % snowman,
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[(3, snowman)])
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cur.execute("select id, data from testfast where id = 3")
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self.assertEqual(cur.fetchone(), (3, snowman))
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def test_returning(self):
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cur = self.conn.cursor()
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result = psycopg2.extras.execute_values(cur,
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"insert into testfast (id, val) values %s returning id",
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((i, i * 10) for i in range(25)),
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page_size=10, fetch=True)
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# result contains all returned pages
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self.assertEqual([r[0] for r in result], list(range(25)))
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def test_invalid_sql(self):
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cur = self.conn.cursor()
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self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
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"insert", [])
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self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
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"insert %s and %s", [])
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self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
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"insert %f", [])
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self.assertRaises(ValueError, psycopg2.extras.execute_values, cur,
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"insert %f %s", [])
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def test_percent_escape(self):
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cur = self.conn.cursor()
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psycopg2.extras.execute_values(cur,
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"insert into testfast (id, data) values %s -- a%%b",
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[(1, 'hi')])
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self.assert_(b'a%%b' not in cur.query)
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self.assert_(b'a%b' in cur.query)
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cur.execute("select id, data from testfast")
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self.assertEqual(cur.fetchall(), [(1, 'hi')])
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def test_suite():
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return unittest.TestLoader().loadTestsFromName(__name__)
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if __name__ == "__main__":
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unittest.main()
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