mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-08 09:51:28 -04:00
Mike Bayer
f6198d9abf
the import structure of many core modules. ``sqlalchemy.schema`` and ``sqlalchemy.types`` remain in the top-level package, but are now just lists of names that pull from within ``sqlalchemy.sql``. Their implementations are now broken out among ``sqlalchemy.sql.type_api``, ``sqlalchemy.sql.sqltypes``, ``sqlalchemy.sql.schema`` and ``sqlalchemy.sql.ddl``, the last of which was moved from ``sqlalchemy.engine``. ``sqlalchemy.sql.expression`` is also a namespace now which pulls implementations mostly from ``sqlalchemy.sql.elements``, ``sqlalchemy.sql.selectable``, and ``sqlalchemy.sql.dml``. Most of the "factory" functions used to create SQL expression objects have been moved to classmethods or constructors, which are exposed in ``sqlalchemy.sql.expression`` using a programmatic system. Care has been taken such that all the original import namespaces remain intact and there should be no impact on any existing applications. The rationale here was to break out these very large modules into smaller ones, provide more manageable lists of function names, to greatly reduce "import cycles" and clarify the up-front importing of names, and to remove the need for redundant functions and documentation throughout the expression package.
203 lines
6.6 KiB
Python
203 lines
6.6 KiB
Python
"""tests the "bind" attribute/argument across schema and SQL,
|
|
including the deprecated versions of these arguments"""
|
|
|
|
from sqlalchemy.testing import assert_raises, assert_raises_message
|
|
from sqlalchemy import engine, exc
|
|
from sqlalchemy import MetaData, ThreadLocalMetaData
|
|
from sqlalchemy import Integer, text
|
|
from sqlalchemy.testing.schema import Table
|
|
from sqlalchemy.testing.schema import Column
|
|
import sqlalchemy as sa
|
|
from sqlalchemy import testing
|
|
from sqlalchemy.testing import fixtures
|
|
|
|
class BindTest(fixtures.TestBase):
|
|
def test_bind_close_engine(self):
|
|
e = testing.db
|
|
with e.connect() as conn:
|
|
assert not conn.closed
|
|
assert conn.closed
|
|
|
|
with e.contextual_connect() as conn:
|
|
assert not conn.closed
|
|
assert conn.closed
|
|
|
|
def test_bind_close_conn(self):
|
|
e = testing.db
|
|
conn = e.connect()
|
|
with conn.connect() as c2:
|
|
assert not c2.closed
|
|
assert not conn.closed
|
|
assert c2.closed
|
|
|
|
with conn.contextual_connect() as c2:
|
|
assert not c2.closed
|
|
assert not conn.closed
|
|
assert c2.closed
|
|
|
|
def test_create_drop_explicit(self):
|
|
metadata = MetaData()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
for bind in (
|
|
testing.db,
|
|
testing.db.connect()
|
|
):
|
|
for args in [
|
|
([], {'bind': bind}),
|
|
([bind], {})
|
|
]:
|
|
metadata.create_all(*args[0], **args[1])
|
|
assert table.exists(*args[0], **args[1])
|
|
metadata.drop_all(*args[0], **args[1])
|
|
table.create(*args[0], **args[1])
|
|
table.drop(*args[0], **args[1])
|
|
assert not table.exists(*args[0], **args[1])
|
|
|
|
def test_create_drop_err_metadata(self):
|
|
metadata = MetaData()
|
|
Table('test_table', metadata, Column('foo', Integer))
|
|
for meth in [metadata.create_all, metadata.drop_all]:
|
|
assert_raises_message(
|
|
exc.UnboundExecutionError,
|
|
"MetaData object is not bound to an Engine or Connection.",
|
|
meth
|
|
)
|
|
|
|
def test_create_drop_err_table(self):
|
|
metadata = MetaData()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
|
|
for meth in [
|
|
table.exists,
|
|
table.create,
|
|
table.drop,
|
|
]:
|
|
assert_raises_message(
|
|
exc.UnboundExecutionError,
|
|
"Table object 'test_table' is not bound to an Engine or Connection.",
|
|
meth
|
|
)
|
|
|
|
@testing.uses_deprecated()
|
|
def test_create_drop_bound(self):
|
|
|
|
for meta in (MetaData, ThreadLocalMetaData):
|
|
for bind in (
|
|
testing.db,
|
|
testing.db.connect()
|
|
):
|
|
metadata = meta()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
metadata.bind = bind
|
|
assert metadata.bind is table.bind is bind
|
|
metadata.create_all()
|
|
assert table.exists()
|
|
metadata.drop_all()
|
|
table.create()
|
|
table.drop()
|
|
assert not table.exists()
|
|
|
|
metadata = meta()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
|
|
metadata.bind = bind
|
|
|
|
assert metadata.bind is table.bind is bind
|
|
metadata.create_all()
|
|
assert table.exists()
|
|
metadata.drop_all()
|
|
table.create()
|
|
table.drop()
|
|
assert not table.exists()
|
|
if isinstance(bind, engine.Connection):
|
|
bind.close()
|
|
|
|
def test_create_drop_constructor_bound(self):
|
|
for bind in (
|
|
testing.db,
|
|
testing.db.connect()
|
|
):
|
|
try:
|
|
for args in (
|
|
([bind], {}),
|
|
([], {'bind': bind}),
|
|
):
|
|
metadata = MetaData(*args[0], **args[1])
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
assert metadata.bind is table.bind is bind
|
|
metadata.create_all()
|
|
assert table.exists()
|
|
metadata.drop_all()
|
|
table.create()
|
|
table.drop()
|
|
assert not table.exists()
|
|
finally:
|
|
if isinstance(bind, engine.Connection):
|
|
bind.close()
|
|
|
|
def test_implicit_execution(self):
|
|
metadata = MetaData()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer),
|
|
test_needs_acid=True,
|
|
)
|
|
conn = testing.db.connect()
|
|
metadata.create_all(bind=conn)
|
|
try:
|
|
trans = conn.begin()
|
|
metadata.bind = conn
|
|
t = table.insert()
|
|
assert t.bind is conn
|
|
table.insert().execute(foo=5)
|
|
table.insert().execute(foo=6)
|
|
table.insert().execute(foo=7)
|
|
trans.rollback()
|
|
metadata.bind = None
|
|
assert conn.execute('select count(*) from test_table'
|
|
).scalar() == 0
|
|
finally:
|
|
metadata.drop_all(bind=conn)
|
|
|
|
|
|
def test_clauseelement(self):
|
|
metadata = MetaData()
|
|
table = Table('test_table', metadata,
|
|
Column('foo', Integer))
|
|
metadata.create_all(bind=testing.db)
|
|
try:
|
|
for elem in [
|
|
table.select,
|
|
lambda **kwargs: sa.func.current_timestamp(**kwargs).select(),
|
|
# func.current_timestamp().select,
|
|
lambda **kwargs:text("select * from test_table", **kwargs)
|
|
]:
|
|
for bind in (
|
|
testing.db,
|
|
testing.db.connect()
|
|
):
|
|
try:
|
|
e = elem(bind=bind)
|
|
assert e.bind is bind
|
|
e.execute().close()
|
|
finally:
|
|
if isinstance(bind, engine.Connection):
|
|
bind.close()
|
|
|
|
e = elem()
|
|
assert e.bind is None
|
|
assert_raises(
|
|
exc.UnboundExecutionError,
|
|
e.execute
|
|
)
|
|
finally:
|
|
if isinstance(bind, engine.Connection):
|
|
bind.close()
|
|
metadata.drop_all(bind=testing.db)
|
|
|
|
|