mirror of
https://github.com/psycopg/psycopg2.git
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390e43fcb1
The syntax "except Exception, exc:" is deprecated. All Python versions supported by psycopg2 support the newer, modern syntax. Forward compatible with future Python versions.
346 lines
11 KiB
Python
Executable File
346 lines
11 KiB
Python
Executable File
#!/usr/bin/env python
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# test_module.py - unit test for the module interface
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#
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# Copyright (C) 2011 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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# In addition, as a special exception, the copyright holders give
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# permission to link this program with the OpenSSL library (or with
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# modified versions of OpenSSL that use the same license as OpenSSL),
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# and distribute linked combinations including the two.
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#
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# You must obey the GNU Lesser General Public License in all respects for
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# all of the code used other than OpenSSL.
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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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import os
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import sys
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from subprocess import Popen
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from testutils import (unittest, skip_before_python, skip_before_postgres,
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ConnectingTestCase, skip_copy_if_green, script_to_py3, slow)
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import psycopg2
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class ConnectTestCase(unittest.TestCase):
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def setUp(self):
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self.args = None
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def connect_stub(dsn, connection_factory=None, async_=False):
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self.args = (dsn, connection_factory, async_)
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self._connect_orig = psycopg2._connect
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psycopg2._connect = connect_stub
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def tearDown(self):
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psycopg2._connect = self._connect_orig
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def test_there_has_to_be_something(self):
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self.assertRaises(TypeError, psycopg2.connect)
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self.assertRaises(TypeError, psycopg2.connect,
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connection_factory=lambda dsn, async_=False: None)
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self.assertRaises(TypeError, psycopg2.connect,
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async_=True)
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def test_no_keywords(self):
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psycopg2.connect('')
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self.assertEqual(self.args[0], '')
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self.assertEqual(self.args[1], None)
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self.assertEqual(self.args[2], False)
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def test_dsn(self):
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psycopg2.connect('dbname=blah host=y')
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self.assertEqual(self.args[0], 'dbname=blah host=y')
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self.assertEqual(self.args[1], None)
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self.assertEqual(self.args[2], False)
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def test_supported_keywords(self):
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psycopg2.connect(database='foo')
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self.assertEqual(self.args[0], 'dbname=foo')
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psycopg2.connect(user='postgres')
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self.assertEqual(self.args[0], 'user=postgres')
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psycopg2.connect(password='secret')
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self.assertEqual(self.args[0], 'password=secret')
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psycopg2.connect(port=5432)
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self.assertEqual(self.args[0], 'port=5432')
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psycopg2.connect(sslmode='require')
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self.assertEqual(self.args[0], 'sslmode=require')
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psycopg2.connect(database='foo',
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user='postgres', password='secret', port=5432)
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self.assert_('dbname=foo' in self.args[0])
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self.assert_('user=postgres' in self.args[0])
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self.assert_('password=secret' in self.args[0])
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self.assert_('port=5432' in self.args[0])
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self.assertEqual(len(self.args[0].split()), 4)
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def test_generic_keywords(self):
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psycopg2.connect(options='stuff')
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self.assertEqual(self.args[0], 'options=stuff')
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def test_factory(self):
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def f(dsn, async_=False):
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pass
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psycopg2.connect(database='foo', host='baz', connection_factory=f)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], f)
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self.assertEqual(self.args[2], False)
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psycopg2.connect("dbname=foo host=baz", connection_factory=f)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], f)
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self.assertEqual(self.args[2], False)
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def test_async(self):
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psycopg2.connect(database='foo', host='baz', async_=1)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], None)
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self.assert_(self.args[2])
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psycopg2.connect("dbname=foo host=baz", async_=True)
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self.assertDsnEqual(self.args[0], 'dbname=foo host=baz')
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self.assertEqual(self.args[1], None)
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self.assert_(self.args[2])
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def test_int_port_param(self):
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psycopg2.connect(database='sony', port=6543)
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dsn = " %s " % self.args[0]
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self.assert_(" dbname=sony " in dsn, dsn)
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self.assert_(" port=6543 " in dsn, dsn)
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def test_empty_param(self):
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psycopg2.connect(database='sony', password='')
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self.assertDsnEqual(self.args[0], "dbname=sony password=''")
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def test_escape(self):
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psycopg2.connect(database='hello world')
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self.assertEqual(self.args[0], "dbname='hello world'")
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psycopg2.connect(database=r'back\slash')
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self.assertEqual(self.args[0], r"dbname=back\\slash")
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psycopg2.connect(database="quo'te")
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self.assertEqual(self.args[0], r"dbname=quo\'te")
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psycopg2.connect(database="with\ttab")
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self.assertEqual(self.args[0], "dbname='with\ttab'")
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psycopg2.connect(database=r"\every thing'")
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self.assertEqual(self.args[0], r"dbname='\\every thing\''")
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def test_params_merging(self):
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psycopg2.connect('dbname=foo', database='bar')
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self.assertEqual(self.args[0], 'dbname=bar')
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psycopg2.connect('dbname=foo', user='postgres')
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self.assertDsnEqual(self.args[0], 'dbname=foo user=postgres')
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class ExceptionsTestCase(ConnectingTestCase):
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def test_attributes(self):
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cur = self.conn.cursor()
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try:
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cur.execute("select * from nonexist")
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except psycopg2.Error as exc:
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e = exc
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self.assertEqual(e.pgcode, '42P01')
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self.assert_(e.pgerror)
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self.assert_(e.cursor is cur)
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def test_diagnostics_attributes(self):
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cur = self.conn.cursor()
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try:
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cur.execute("select * from nonexist")
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except psycopg2.Error as exc:
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e = exc
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diag = e.diag
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self.assert_(isinstance(diag, psycopg2.extensions.Diagnostics))
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for attr in [
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'column_name', 'constraint_name', 'context', 'datatype_name',
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'internal_position', 'internal_query', 'message_detail',
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'message_hint', 'message_primary', 'schema_name', 'severity',
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'source_file', 'source_function', 'source_line', 'sqlstate',
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'statement_position', 'table_name', ]:
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v = getattr(diag, attr)
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if v is not None:
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self.assert_(isinstance(v, str))
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def test_diagnostics_values(self):
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cur = self.conn.cursor()
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try:
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cur.execute("select * from nonexist")
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except psycopg2.Error as exc:
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e = exc
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self.assertEqual(e.diag.sqlstate, '42P01')
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self.assertEqual(e.diag.severity, 'ERROR')
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def test_diagnostics_life(self):
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import gc
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from weakref import ref
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def tmp():
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cur = self.conn.cursor()
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try:
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cur.execute("select * from nonexist")
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except psycopg2.Error as exc:
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return cur, exc
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cur, e = tmp()
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diag = e.diag
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w = ref(cur)
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del e, cur
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gc.collect()
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assert(w() is not None)
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self.assertEqual(diag.sqlstate, '42P01')
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del diag
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gc.collect()
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gc.collect()
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assert(w() is None)
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@skip_copy_if_green
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def test_diagnostics_copy(self):
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from StringIO import StringIO
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f = StringIO()
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cur = self.conn.cursor()
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try:
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cur.copy_to(f, 'nonexist')
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except psycopg2.Error as exc:
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diag = exc.diag
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self.assertEqual(diag.sqlstate, '42P01')
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def test_diagnostics_independent(self):
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cur = self.conn.cursor()
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try:
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cur.execute("l'acqua e' poca e 'a papera nun galleggia")
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except Exception as exc:
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diag1 = exc.diag
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self.conn.rollback()
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try:
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cur.execute("select level from water where ducks > 1")
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except psycopg2.Error as exc:
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diag2 = exc.diag
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self.assertEqual(diag1.sqlstate, '42601')
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self.assertEqual(diag2.sqlstate, '42P01')
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def test_diagnostics_from_commit(self):
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cur = self.conn.cursor()
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cur.execute("""
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create temp table test_deferred (
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data int primary key,
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ref int references test_deferred (data)
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deferrable initially deferred)
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""")
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cur.execute("insert into test_deferred values (1,2)")
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try:
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self.conn.commit()
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except psycopg2.Error as exc:
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e = exc
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self.assertEqual(e.diag.sqlstate, '23503')
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@skip_before_postgres(9, 3)
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def test_9_3_diagnostics(self):
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cur = self.conn.cursor()
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cur.execute("""
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create temp table test_exc (
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data int constraint chk_eq1 check (data = 1)
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)""")
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try:
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cur.execute("insert into test_exc values(2)")
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except psycopg2.Error as exc:
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e = exc
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self.assertEqual(e.pgcode, '23514')
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self.assertEqual(e.diag.schema_name[:7], "pg_temp")
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self.assertEqual(e.diag.table_name, "test_exc")
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self.assertEqual(e.diag.column_name, None)
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self.assertEqual(e.diag.constraint_name, "chk_eq1")
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self.assertEqual(e.diag.datatype_name, None)
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@skip_before_python(2, 5)
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def test_pickle(self):
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import pickle
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cur = self.conn.cursor()
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try:
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cur.execute("select * from nonexist")
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except psycopg2.Error as exc:
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e = exc
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e1 = pickle.loads(pickle.dumps(e))
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self.assertEqual(e.pgerror, e1.pgerror)
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self.assertEqual(e.pgcode, e1.pgcode)
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self.assert_(e1.cursor is None)
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@skip_before_python(2, 5)
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def test_pickle_connection_error(self):
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# segfaults on psycopg 2.5.1 - see ticket #170
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import pickle
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try:
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psycopg2.connect('dbname=nosuchdatabasemate')
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except psycopg2.Error as exc:
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e = exc
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e1 = pickle.loads(pickle.dumps(e))
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self.assertEqual(e.pgerror, e1.pgerror)
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self.assertEqual(e.pgcode, e1.pgcode)
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self.assert_(e1.cursor is None)
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class TestExtensionModule(unittest.TestCase):
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@slow
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def test_import_internal(self):
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# check that the internal package can be imported "naked"
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# we may break this property if there is a compelling reason to do so,
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# however having it allows for some import juggling such as the one
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# required in ticket #201.
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pkgdir = os.path.dirname(psycopg2.__file__)
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pardir = os.path.dirname(pkgdir)
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self.assert_(pardir in sys.path)
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script = ("""
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import sys
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sys.path.remove(%r)
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sys.path.insert(0, %r)
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import _psycopg
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""" % (pardir, pkgdir))
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proc = Popen([sys.executable, '-c', script_to_py3(script)])
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proc.communicate()
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self.assertEqual(0, proc.returncode)
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class TestVersionDiscovery(unittest.TestCase):
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def test_libpq_version(self):
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self.assertTrue(type(psycopg2.__libpq_version__) is int)
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try:
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self.assertTrue(type(psycopg2.extensions.libpq_version()) is int)
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except psycopg2.NotSupportedError:
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self.assertTrue(psycopg2.__libpq_version__ < 90100)
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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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