psycopg2/tests/test_module.py
2019-03-16 19:13:58 +00:00

352 lines
12 KiB
Python
Executable File

#!/usr/bin/env python
# test_module.py - unit test for the module interface
#
# Copyright (C) 2011-2019 Daniele Varrazzo <daniele.varrazzo@gmail.com>
#
# 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.
#
# In addition, as a special exception, the copyright holders give
# permission to link this program with the OpenSSL library (or with
# modified versions of OpenSSL that use the same license as OpenSSL),
# and distribute linked combinations including the two.
#
# You must obey the GNU Lesser General Public License in all respects for
# all of the code used other than OpenSSL.
#
# 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.
import gc
import os
import sys
import pickle
from subprocess import Popen
from weakref import ref
import unittest
from .testutils import (skip_before_postgres,
ConnectingTestCase, skip_copy_if_green, slow, StringIO)
import psycopg2
class ConnectTestCase(unittest.TestCase):
def setUp(self):
self.args = None
def connect_stub(dsn, connection_factory=None, async_=False):
self.args = (dsn, connection_factory, async_)
self._connect_orig = psycopg2._connect
psycopg2._connect = connect_stub
def tearDown(self):
psycopg2._connect = self._connect_orig
def test_there_has_to_be_something(self):
self.assertRaises(TypeError, psycopg2.connect)
self.assertRaises(TypeError, psycopg2.connect,
connection_factory=lambda dsn, async_=False: None)
self.assertRaises(TypeError, psycopg2.connect,
async_=True)
def test_no_keywords(self):
psycopg2.connect('')
self.assertEqual(self.args[0], '')
self.assertEqual(self.args[1], None)
self.assertEqual(self.args[2], False)
def test_dsn(self):
psycopg2.connect('dbname=blah host=y')
self.assertEqual(self.args[0], 'dbname=blah host=y')
self.assertEqual(self.args[1], None)
self.assertEqual(self.args[2], False)
def test_supported_keywords(self):
psycopg2.connect(database='foo')
self.assertEqual(self.args[0], 'dbname=foo')
psycopg2.connect(user='postgres')
self.assertEqual(self.args[0], 'user=postgres')
psycopg2.connect(password='secret')
self.assertEqual(self.args[0], 'password=secret')
psycopg2.connect(port=5432)
self.assertEqual(self.args[0], 'port=5432')
psycopg2.connect(sslmode='require')
self.assertEqual(self.args[0], 'sslmode=require')
psycopg2.connect(database='foo',
user='postgres', password='secret', port=5432)
self.assert_('dbname=foo' in self.args[0])
self.assert_('user=postgres' in self.args[0])
self.assert_('password=secret' in self.args[0])
self.assert_('port=5432' in self.args[0])
self.assertEqual(len(self.args[0].split()), 4)
def test_generic_keywords(self):
psycopg2.connect(options='stuff')
self.assertEqual(self.args[0], 'options=stuff')
def test_factory(self):
def f(dsn, async_=False):
pass
psycopg2.connect(database='foo', host='baz', connection_factory=f)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], f)
self.assertEqual(self.args[2], False)
psycopg2.connect("dbname=foo host=baz", connection_factory=f)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], f)
self.assertEqual(self.args[2], False)
def test_async(self):
psycopg2.connect(database='foo', host='baz', async_=1)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], None)
self.assert_(self.args[2])
psycopg2.connect("dbname=foo host=baz", async_=True)
self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
self.assertEqual(self.args[1], None)
self.assert_(self.args[2])
def test_int_port_param(self):
psycopg2.connect(database='sony', port=6543)
dsn = " %s " % self.args[0]
self.assert_(" dbname=sony " in dsn, dsn)
self.assert_(" port=6543 " in dsn, dsn)
def test_empty_param(self):
psycopg2.connect(database='sony', password='')
self.assertDsnEqual(self.args[0], "dbname=sony password=''")
def test_escape(self):
psycopg2.connect(database='hello world')
self.assertEqual(self.args[0], "dbname='hello world'")
psycopg2.connect(database=r'back\slash')
self.assertEqual(self.args[0], r"dbname=back\\slash")
psycopg2.connect(database="quo'te")
self.assertEqual(self.args[0], r"dbname=quo\'te")
psycopg2.connect(database="with\ttab")
self.assertEqual(self.args[0], "dbname='with\ttab'")
psycopg2.connect(database=r"\every thing'")
self.assertEqual(self.args[0], r"dbname='\\every thing\''")
def test_params_merging(self):
psycopg2.connect('dbname=foo', database='bar')
self.assertEqual(self.args[0], 'dbname=bar')
psycopg2.connect('dbname=foo', user='postgres')
self.assertDsnEqual(self.args[0], 'dbname=foo user=postgres')
class ExceptionsTestCase(ConnectingTestCase):
def test_attributes(self):
cur = self.conn.cursor()
try:
cur.execute("select * from nonexist")
except psycopg2.Error as exc:
e = exc
self.assertEqual(e.pgcode, '42P01')
self.assert_(e.pgerror)
self.assert_(e.cursor is cur)
def test_diagnostics_attributes(self):
cur = self.conn.cursor()
try:
cur.execute("select * from nonexist")
except psycopg2.Error as exc:
e = exc
diag = e.diag
self.assert_(isinstance(diag, psycopg2.extensions.Diagnostics))
for attr in [
'column_name', 'constraint_name', 'context', 'datatype_name',
'internal_position', 'internal_query', 'message_detail',
'message_hint', 'message_primary', 'schema_name', 'severity',
'severity_nonlocalized', 'source_file', 'source_function',
'source_line', 'sqlstate', 'statement_position', 'table_name', ]:
v = getattr(diag, attr)
if v is not None:
self.assert_(isinstance(v, str))
def test_diagnostics_values(self):
cur = self.conn.cursor()
try:
cur.execute("select * from nonexist")
except psycopg2.Error as exc:
e = exc
self.assertEqual(e.diag.sqlstate, '42P01')
self.assertEqual(e.diag.severity, 'ERROR')
def test_diagnostics_life(self):
def tmp():
cur = self.conn.cursor()
try:
cur.execute("select * from nonexist")
except psycopg2.Error as exc:
return cur, exc
cur, e = tmp()
diag = e.diag
w = ref(cur)
del e, cur
gc.collect()
assert(w() is not None)
self.assertEqual(diag.sqlstate, '42P01')
del diag
gc.collect()
gc.collect()
assert(w() is None)
@skip_copy_if_green
def test_diagnostics_copy(self):
f = StringIO()
cur = self.conn.cursor()
try:
cur.copy_to(f, 'nonexist')
except psycopg2.Error as exc:
diag = exc.diag
self.assertEqual(diag.sqlstate, '42P01')
def test_diagnostics_independent(self):
cur = self.conn.cursor()
try:
cur.execute("l'acqua e' poca e 'a papera nun galleggia")
except Exception as exc:
diag1 = exc.diag
self.conn.rollback()
try:
cur.execute("select level from water where ducks > 1")
except psycopg2.Error as exc:
diag2 = exc.diag
self.assertEqual(diag1.sqlstate, '42601')
self.assertEqual(diag2.sqlstate, '42P01')
def test_diagnostics_from_commit(self):
cur = self.conn.cursor()
cur.execute("""
create temp table test_deferred (
data int primary key,
ref int references test_deferred (data)
deferrable initially deferred)
""")
cur.execute("insert into test_deferred values (1,2)")
try:
self.conn.commit()
except psycopg2.Error as exc:
e = exc
self.assertEqual(e.diag.sqlstate, '23503')
@skip_before_postgres(9, 3)
def test_9_3_diagnostics(self):
cur = self.conn.cursor()
cur.execute("""
create temp table test_exc (
data int constraint chk_eq1 check (data = 1)
)""")
try:
cur.execute("insert into test_exc values(2)")
except psycopg2.Error as exc:
e = exc
self.assertEqual(e.pgcode, '23514')
self.assertEqual(e.diag.schema_name[:7], "pg_temp")
self.assertEqual(e.diag.table_name, "test_exc")
self.assertEqual(e.diag.column_name, None)
self.assertEqual(e.diag.constraint_name, "chk_eq1")
self.assertEqual(e.diag.datatype_name, None)
@skip_before_postgres(9, 6)
def test_9_6_diagnostics(self):
cur = self.conn.cursor()
try:
cur.execute("select 1 from nosuchtable")
except psycopg2.Error as exc:
e = exc
self.assertEqual(e.diag.severity_nonlocalized, 'ERROR')
def test_pickle(self):
cur = self.conn.cursor()
try:
cur.execute("select * from nonexist")
except psycopg2.Error as exc:
e = exc
e1 = pickle.loads(pickle.dumps(e))
self.assertEqual(e.pgerror, e1.pgerror)
self.assertEqual(e.pgcode, e1.pgcode)
self.assert_(e1.cursor is None)
def test_pickle_connection_error(self):
# segfaults on psycopg 2.5.1 - see ticket #170
try:
psycopg2.connect('dbname=nosuchdatabasemate')
except psycopg2.Error as exc:
e = exc
e1 = pickle.loads(pickle.dumps(e))
self.assertEqual(e.pgerror, e1.pgerror)
self.assertEqual(e.pgcode, e1.pgcode)
self.assert_(e1.cursor is None)
class TestExtensionModule(unittest.TestCase):
@slow
def test_import_internal(self):
# check that the internal package can be imported "naked"
# we may break this property if there is a compelling reason to do so,
# however having it allows for some import juggling such as the one
# required in ticket #201.
pkgdir = os.path.dirname(psycopg2.__file__)
pardir = os.path.dirname(pkgdir)
self.assert_(pardir in sys.path)
script = ("""
import sys
sys.path.remove(%r)
sys.path.insert(0, %r)
import _psycopg
""" % (pardir, pkgdir))
proc = Popen([sys.executable, '-c', script])
proc.communicate()
self.assertEqual(0, proc.returncode)
class TestVersionDiscovery(unittest.TestCase):
def test_libpq_version(self):
self.assertTrue(type(psycopg2.__libpq_version__) is int)
try:
self.assertTrue(type(psycopg2.extensions.libpq_version()) is int)
except psycopg2.NotSupportedError:
self.assertTrue(psycopg2.__libpq_version__ < 90100)
def test_suite():
return unittest.TestLoader().loadTestsFromName(__name__)
if __name__ == "__main__":
unittest.main()