mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-16 13:47:20 -04:00
Mike Bayer
00b5c10846
- Deprecated remaining engine-level introspection and utility methods including :meth:`.Engine.run_callable`, :meth:`.Engine.transaction`, :meth:`.Engine.table_names`, :meth:`.Engine.has_table`. The utility methods are superseded by modern context-manager patterns, and the table introspection tasks are suited by the :class:`.Inspector` object. - The internal dialect method ``Dialect.reflecttable`` has been removed. A review of third party dialects has not found any making use of this method, as it was already documented as one that should not be used by external dialects. Additionally, the private ``Engine._run_visitor`` method is also removed. - The long-deprecated ``Inspector.get_table_names.order_by`` parameter has been removed. - The :paramref:`.Table.autoload_with` parameter now accepts an :class:`.Inspector` object directly, as well as any :class:`.Engine` or :class:`.Connection` as was the case before. Fixes: #4755 Change-Id: Iec3a8b0f3e298ba87d532b16fac1e1132f464e21
176 lines
6.3 KiB
Python
176 lines
6.3 KiB
Python
"""tests the "bind" attribute/argument across schema and SQL,
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including the deprecated versions of these arguments"""
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import sqlalchemy as sa
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from sqlalchemy import engine
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from sqlalchemy import exc
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from sqlalchemy import inspect
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from sqlalchemy import Integer
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from sqlalchemy import MetaData
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from sqlalchemy import testing
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from sqlalchemy import text
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from sqlalchemy import ThreadLocalMetaData
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from sqlalchemy.testing import assert_raises
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from sqlalchemy.testing import assert_raises_message
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from sqlalchemy.testing import fixtures
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from sqlalchemy.testing import is_false
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from sqlalchemy.testing import is_true
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from sqlalchemy.testing.schema import Column
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from sqlalchemy.testing.schema import Table
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class BindTest(fixtures.TestBase):
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def test_bind_close_engine(self):
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e = testing.db
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with e.connect() as conn:
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assert not conn.closed
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assert conn.closed
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def test_bind_close_conn(self):
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e = testing.db
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conn = e.connect()
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with conn.connect() as c2:
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assert not c2.closed
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assert not conn.closed
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assert c2.closed
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def test_create_drop_explicit(self):
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metadata = MetaData()
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table = Table("test_table", metadata, Column("foo", Integer))
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for bind in (testing.db, testing.db.connect()):
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for args in [([], {"bind": bind}), ([bind], {})]:
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metadata.create_all(*args[0], **args[1])
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is_true(inspect(bind).has_table(table.name))
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metadata.drop_all(*args[0], **args[1])
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table.create(*args[0], **args[1])
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table.drop(*args[0], **args[1])
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is_false(inspect(bind).has_table(table.name))
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def test_create_drop_err_metadata(self):
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metadata = MetaData()
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Table("test_table", metadata, Column("foo", Integer))
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for meth in [metadata.create_all, metadata.drop_all]:
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assert_raises_message(
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exc.UnboundExecutionError,
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"MetaData object is not bound to an Engine or Connection.",
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meth,
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)
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def test_create_drop_err_table(self):
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metadata = MetaData()
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table = Table("test_table", metadata, Column("foo", Integer))
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for meth in [table.create, table.drop]:
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assert_raises_message(
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exc.UnboundExecutionError,
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(
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"Table object 'test_table' is not bound to an Engine or "
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"Connection."
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),
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meth,
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)
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@testing.uses_deprecated()
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def test_create_drop_bound(self):
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for meta in (MetaData, ThreadLocalMetaData):
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for bind in (testing.db, testing.db.connect()):
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metadata = meta()
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table = Table("test_table", metadata, Column("foo", Integer))
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metadata.bind = bind
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assert metadata.bind is table.bind is bind
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metadata.create_all()
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assert table.exists()
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metadata.drop_all()
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table.create()
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table.drop()
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assert not table.exists()
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metadata = meta()
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table = Table("test_table", metadata, Column("foo", Integer))
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metadata.bind = bind
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assert metadata.bind is table.bind is bind
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metadata.create_all()
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assert table.exists()
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metadata.drop_all()
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table.create()
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table.drop()
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assert not table.exists()
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if isinstance(bind, engine.Connection):
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bind.close()
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def test_create_drop_constructor_bound(self):
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for bind in (testing.db, testing.db.connect()):
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try:
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for args in (([bind], {}), ([], {"bind": bind})):
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metadata = MetaData(*args[0], **args[1])
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table = Table(
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"test_table", metadata, Column("foo", Integer)
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)
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assert metadata.bind is table.bind is bind
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metadata.create_all()
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is_true(inspect(bind).has_table(table.name))
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metadata.drop_all()
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table.create()
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table.drop()
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is_false(inspect(bind).has_table(table.name))
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finally:
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if isinstance(bind, engine.Connection):
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bind.close()
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def test_implicit_execution(self):
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metadata = MetaData()
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table = Table(
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"test_table",
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metadata,
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Column("foo", Integer),
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test_needs_acid=True,
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)
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conn = testing.db.connect()
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metadata.create_all(bind=conn)
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try:
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trans = conn.begin()
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metadata.bind = conn
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t = table.insert()
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assert t.bind is conn
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table.insert().execute(foo=5)
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table.insert().execute(foo=6)
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table.insert().execute(foo=7)
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trans.rollback()
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metadata.bind = None
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assert (
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conn.execute("select count(*) from test_table").scalar() == 0
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)
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finally:
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metadata.drop_all(bind=conn)
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def test_clauseelement(self):
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metadata = MetaData()
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table = Table("test_table", metadata, Column("foo", Integer))
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metadata.create_all(bind=testing.db)
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try:
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for elem in [
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table.select,
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lambda **kwargs: sa.func.current_timestamp(**kwargs).select(),
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# func.current_timestamp().select,
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lambda **kwargs: text("select * from test_table", **kwargs),
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]:
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for bind in (testing.db, testing.db.connect()):
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try:
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e = elem(bind=bind)
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assert e.bind is bind
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e.execute().close()
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finally:
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if isinstance(bind, engine.Connection):
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bind.close()
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e = elem()
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assert e.bind is None
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assert_raises(exc.UnboundExecutionError, e.execute)
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finally:
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if isinstance(bind, engine.Connection):
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bind.close()
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metadata.drop_all(bind=testing.db)
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