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# coding: utf-8
from sqlalchemy.testing.assertions import (
eq_, assert_raises, assert_raises_message, AssertsExecutionResults,
AssertsCompiledSQL)
from sqlalchemy.testing import engines, fixtures
from sqlalchemy import testing
import datetime
from sqlalchemy import (
Table, Column, select, MetaData, text, Integer, String, Sequence, Numeric,
DateTime, BigInteger, func, extract, SmallInteger)
from sqlalchemy import exc, schema
from sqlalchemy.dialects.postgresql import base as postgresql
import logging
import logging.handlers
from sqlalchemy.testing.mock import Mock
class MiscTest(fixtures.TestBase, AssertsExecutionResults, AssertsCompiledSQL):
__only_on__ = 'postgresql'
__backend__ = True
@testing.provide_metadata
def test_date_reflection(self):
metadata = self.metadata
Table(
'pgdate', metadata, Column('date1', DateTime(timezone=True)),
Column('date2', DateTime(timezone=False)))
metadata.create_all()
m2 = MetaData(testing.db)
t2 = Table('pgdate', m2, autoload=True)
assert t2.c.date1.type.timezone is True
assert t2.c.date2.type.timezone is False
@testing.fails_on('+zxjdbc',
'The JDBC driver handles the version parsing')
def test_version_parsing(self):
def mock_conn(res):
return Mock(
execute=Mock(return_value=Mock(scalar=Mock(return_value=res))))
for string, version in [
(
'PostgreSQL 8.3.8 on i686-redhat-linux-gnu, compiled by '
'GCC gcc (GCC) 4.1.2 20070925 (Red Hat 4.1.2-33)',
(8, 3, 8)),
(
'PostgreSQL 8.5devel on x86_64-unknown-linux-gnu, '
'compiled by GCC gcc (GCC) 4.4.2, 64-bit', (8, 5)),
(
'EnterpriseDB 9.1.2.2 on x86_64-unknown-linux-gnu, '
'compiled by gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-50), '
'64-bit', (9, 1, 2)),
(
'[PostgreSQL 9.2.4 ] VMware vFabric Postgres 9.2.4.0 '
'release build 1080137', (9, 2, 4))]:
eq_(testing.db.dialect._get_server_version_info(mock_conn(string)),
version)
@testing.only_on('postgresql+psycopg2', 'psycopg2-specific feature')
def test_psycopg2_version(self):
v = testing.db.dialect.psycopg2_version
assert testing.db.dialect.dbapi.__version__.\
startswith(".".join(str(x) for x in v))
@testing.only_on('postgresql+psycopg2', 'psycopg2-specific feature')
def test_psycopg2_non_standard_err(self):
from psycopg2.extensions import TransactionRollbackError
import psycopg2
exception = exc.DBAPIError.instance(
"some statement", {}, TransactionRollbackError("foo"),
psycopg2.Error)
assert isinstance(exception, exc.OperationalError)
# currently not passing with pg 9.3 that does not seem to generate
# any notices here, would rather find a way to mock this
@testing.requires.no_coverage
@testing.only_on('postgresql+psycopg2', 'psycopg2-specific feature')
def _test_notice_logging(self):
log = logging.getLogger('sqlalchemy.dialects.postgresql')
buf = logging.handlers.BufferingHandler(100)
lev = log.level
log.addHandler(buf)
log.setLevel(logging.INFO)
try:
conn = testing.db.connect()
trans = conn.begin()
try:
conn.execute('create table foo (id serial primary key)')
finally:
trans.rollback()
finally:
log.removeHandler(buf)
log.setLevel(lev)
msgs = ' '.join(b.msg for b in buf.buffer)
assert 'will create implicit sequence' in msgs
assert 'will create implicit index' in msgs
@testing.only_on('postgresql+psycopg2', 'psycopg2-specific feature')
@engines.close_open_connections
def test_client_encoding(self):
c = testing.db.connect()
current_encoding = c.connection.connection.encoding
c.close()
# attempt to use an encoding that's not
# already set
if current_encoding == 'UTF8':
test_encoding = 'LATIN1'
else:
test_encoding = 'UTF8'
e = engines.testing_engine(options={'client_encoding': test_encoding})
c = e.connect()
eq_(c.connection.connection.encoding, test_encoding)
@testing.only_on(
['postgresql+psycopg2', 'postgresql+pg8000',
'postgresql+psycopg2cffi'],
'psycopg2 / pg8000 - specific feature')
@engines.close_open_connections
def test_autocommit_isolation_level(self):
c = testing.db.connect().execution_options(
isolation_level='AUTOCOMMIT')
# If we're really in autocommit mode then we'll get an error saying
# that the prepared transaction doesn't exist. Otherwise, we'd
# get an error saying that the command can't be run within a
# transaction.
assert_raises_message(
exc.ProgrammingError,
'prepared transaction with identifier "gilberte" does not exist',
c.execute, "commit prepared 'gilberte'")
@testing.fails_on('+zxjdbc',
"Can't infer the SQL type to use for an instance "
"of org.python.core.PyObjectDerived.")
def test_extract(self):
fivedaysago = datetime.datetime.now() \
- datetime.timedelta(days=5)
for field, exp in ('year', fivedaysago.year), \
('month', fivedaysago.month), ('day', fivedaysago.day):
r = testing.db.execute(
select([
extract(field, func.now() + datetime.timedelta(days=-5))])
).scalar()
eq_(r, exp)
def test_checksfor_sequence(self):
meta1 = MetaData(testing.db)
seq = Sequence('fooseq')
t = Table(
'mytable', meta1,
Column('col1', Integer, seq)
)
seq.drop()
try:
testing.db.execute('CREATE SEQUENCE fooseq')
t.create(checkfirst=True)
finally:
t.drop(checkfirst=True)
def test_schema_roundtrips(self):
meta = MetaData(testing.db)
users = Table(
'users', meta, Column(
'id', Integer, primary_key=True), Column(
'name', String(50)), schema='test_schema')
users.create()
try:
users.insert().execute(id=1, name='name1')
users.insert().execute(id=2, name='name2')
users.insert().execute(id=3, name='name3')
users.insert().execute(id=4, name='name4')
eq_(users.select().where(users.c.name == 'name2')
.execute().fetchall(), [(2, 'name2')])
eq_(users.select(use_labels=True).where(
users.c.name == 'name2').execute().fetchall(), [(2, 'name2')])
users.delete().where(users.c.id == 3).execute()
eq_(users.select().where(users.c.name == 'name3')
.execute().fetchall(), [])
users.update().where(users.c.name == 'name4'
).execute(name='newname')
eq_(users.select(use_labels=True).where(
users.c.id == 4).execute().fetchall(), [(4, 'newname')])
finally:
users.drop()
def test_preexecute_passivedefault(self):
"""test that when we get a primary key column back from
reflecting a table which has a default value on it, we pre-
execute that DefaultClause upon insert."""
try:
meta = MetaData(testing.db)
testing.db.execute("""
CREATE TABLE speedy_users
(
speedy_user_id SERIAL PRIMARY KEY,
user_name VARCHAR NOT NULL,
user_password VARCHAR NOT NULL
);
""")
t = Table('speedy_users', meta, autoload=True)
r = t.insert().execute(user_name='user',
user_password='lala')
assert r.inserted_primary_key == [1]
l = t.select().execute().fetchall()
assert l == [(1, 'user', 'lala')]
finally:
testing.db.execute('drop table speedy_users')
@testing.fails_on('+zxjdbc', 'psycopg2/pg8000 specific assertion')
@testing.fails_on('pypostgresql',
'psycopg2/pg8000 specific assertion')
def test_numeric_raise(self):
stmt = text(
"select cast('hi' as char) as hi", typemap={'hi': Numeric})
assert_raises(exc.InvalidRequestError, testing.db.execute, stmt)
@testing.only_if(
"postgresql >= 8.2", "requires standard_conforming_strings")
def test_serial_integer(self):
for version, type_, expected in [
(None, Integer, 'SERIAL'),
(None, BigInteger, 'BIGSERIAL'),
((9, 1), SmallInteger, 'SMALLINT'),
((9, 2), SmallInteger, 'SMALLSERIAL'),
(None, postgresql.INTEGER, 'SERIAL'),
(None, postgresql.BIGINT, 'BIGSERIAL'),
]:
m = MetaData()
t = Table('t', m, Column('c', type_, primary_key=True))
if version:
dialect = postgresql.dialect()
dialect._get_server_version_info = Mock(return_value=version)
dialect.initialize(testing.db.connect())
else:
dialect = testing.db.dialect
ddl_compiler = dialect.ddl_compiler(dialect, schema.CreateTable(t))
eq_(
ddl_compiler.get_column_specification(t.c.c),
"c %s NOT NULL" % expected
)
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