mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-28 11:35:19 -04:00
Mike Bayer
20cdc64588
become an externally usable package but still remains within the main sqlalchemy parent package. in this system, we use kind of an ugly hack to get the noseplugin imported outside of the "sqlalchemy" package, while still making it available within sqlalchemy for usage by third party libraries.
581 lines
22 KiB
Python
581 lines
22 KiB
Python
from __future__ import with_statement
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from sqlalchemy.testing import assert_raises, assert_raises_message
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from sqlalchemy.schema import DDL, CheckConstraint, AddConstraint, \
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DropConstraint
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from sqlalchemy import create_engine
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from sqlalchemy import MetaData, Integer, String, event, exc, text
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from sqlalchemy.testing.schema import Table
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from sqlalchemy.testing.schema import Column
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import sqlalchemy as tsa
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from sqlalchemy import testing
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from sqlalchemy.testing import engines
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from sqlalchemy.testing import AssertsCompiledSQL, eq_
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from nose import SkipTest
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from sqlalchemy.testing import fixtures
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class DDLEventTest(fixtures.TestBase):
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class Canary(object):
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def __init__(self, schema_item, bind):
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self.state = None
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self.schema_item = schema_item
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self.bind = bind
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def before_create(self, schema_item, bind, **kw):
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assert self.state is None
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assert schema_item is self.schema_item
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assert bind is self.bind
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self.state = 'before-create'
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def after_create(self, schema_item, bind, **kw):
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assert self.state in ('before-create', 'skipped')
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assert schema_item is self.schema_item
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assert bind is self.bind
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self.state = 'after-create'
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def before_drop(self, schema_item, bind, **kw):
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assert self.state is None
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assert schema_item is self.schema_item
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assert bind is self.bind
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self.state = 'before-drop'
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def after_drop(self, schema_item, bind, **kw):
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assert self.state in ('before-drop', 'skipped')
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assert schema_item is self.schema_item
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assert bind is self.bind
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self.state = 'after-drop'
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def setup(self):
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self.bind = engines.mock_engine()
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self.metadata = MetaData()
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self.table = Table('t', self.metadata, Column('id', Integer))
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def test_table_create_before(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'before_create', canary.before_create)
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table.create(bind)
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assert canary.state == 'before-create'
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table.drop(bind)
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assert canary.state == 'before-create'
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def test_table_create_after(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'after_create', canary.after_create)
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canary.state = 'skipped'
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table.create(bind)
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assert canary.state == 'after-create'
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table.drop(bind)
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assert canary.state == 'after-create'
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def test_table_create_both(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'before_create', canary.before_create)
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event.listen(table, 'after_create', canary.after_create)
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table.create(bind)
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assert canary.state == 'after-create'
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table.drop(bind)
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assert canary.state == 'after-create'
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def test_table_drop_before(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'before_drop', canary.before_drop)
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table.create(bind)
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assert canary.state is None
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table.drop(bind)
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assert canary.state == 'before-drop'
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def test_table_drop_after(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'after_drop', canary.after_drop)
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table.create(bind)
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assert canary.state is None
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canary.state = 'skipped'
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table.drop(bind)
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assert canary.state == 'after-drop'
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def test_table_drop_both(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'before_drop', canary.before_drop)
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event.listen(table, 'after_drop', canary.after_drop)
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table.create(bind)
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assert canary.state is None
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table.drop(bind)
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assert canary.state == 'after-drop'
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def test_table_all(self):
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table, bind = self.table, self.bind
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canary = self.Canary(table, bind)
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event.listen(table, 'before_create', canary.before_create)
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event.listen(table, 'after_create', canary.after_create)
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event.listen(table, 'before_drop', canary.before_drop)
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event.listen(table, 'after_drop', canary.after_drop)
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assert canary.state is None
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table.create(bind)
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assert canary.state == 'after-create'
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canary.state = None
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table.drop(bind)
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assert canary.state == 'after-drop'
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def test_table_create_before(self):
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metadata, bind = self.metadata, self.bind
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canary = self.Canary(metadata, bind)
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event.listen(metadata, 'before_create', canary.before_create)
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metadata.create_all(bind)
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assert canary.state == 'before-create'
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metadata.drop_all(bind)
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assert canary.state == 'before-create'
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def test_metadata_create_after(self):
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metadata, bind = self.metadata, self.bind
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canary = self.Canary(metadata, bind)
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event.listen(metadata, 'after_create', canary.after_create)
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canary.state = 'skipped'
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metadata.create_all(bind)
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assert canary.state == 'after-create'
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metadata.drop_all(bind)
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assert canary.state == 'after-create'
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def test_metadata_create_both(self):
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metadata, bind = self.metadata, self.bind
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canary = self.Canary(metadata, bind)
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event.listen(metadata, 'before_create', canary.before_create)
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event.listen(metadata, 'after_create', canary.after_create)
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metadata.create_all(bind)
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assert canary.state == 'after-create'
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metadata.drop_all(bind)
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assert canary.state == 'after-create'
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def test_metadata_table_isolation(self):
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metadata, table, bind = self.metadata, self.table, self.bind
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table_canary = self.Canary(table, bind)
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event.listen(table, 'before_create', table_canary.before_create)
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metadata_canary = self.Canary(metadata, bind)
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event.listen(metadata, 'before_create', metadata_canary.before_create)
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self.table.create(self.bind)
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assert metadata_canary.state == None
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def test_append_listener(self):
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metadata, table, bind = self.metadata, self.table, self.bind
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fn = lambda *a: None
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table.append_ddl_listener('before-create', fn)
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assert_raises(exc.InvalidRequestError, table.append_ddl_listener,
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'blah', fn)
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metadata.append_ddl_listener('before-create', fn)
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assert_raises(exc.InvalidRequestError, metadata.append_ddl_listener,
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'blah', fn)
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class DDLExecutionTest(fixtures.TestBase):
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def setup(self):
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self.engine = engines.mock_engine()
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self.metadata = MetaData(self.engine)
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self.users = Table('users', self.metadata,
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Column('user_id', Integer, primary_key=True),
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Column('user_name', String(40)),
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)
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def test_table_standalone(self):
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users, engine = self.users, self.engine
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event.listen(users, 'before_create', DDL('mxyzptlk'))
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event.listen(users, 'after_create', DDL('klptzyxm'))
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event.listen(users, 'before_drop', DDL('xyzzy'))
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event.listen(users, 'after_drop', DDL('fnord'))
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users.create()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' in strings
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assert 'klptzyxm' in strings
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assert 'xyzzy' not in strings
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assert 'fnord' not in strings
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del engine.mock[:]
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users.drop()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' not in strings
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assert 'klptzyxm' not in strings
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assert 'xyzzy' in strings
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assert 'fnord' in strings
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def test_table_by_metadata(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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event.listen(users, 'before_create', DDL('mxyzptlk'))
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event.listen(users, 'after_create', DDL('klptzyxm'))
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event.listen(users, 'before_drop', DDL('xyzzy'))
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event.listen(users, 'after_drop', DDL('fnord'))
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metadata.create_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' in strings
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assert 'klptzyxm' in strings
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assert 'xyzzy' not in strings
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assert 'fnord' not in strings
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del engine.mock[:]
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metadata.drop_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' not in strings
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assert 'klptzyxm' not in strings
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assert 'xyzzy' in strings
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assert 'fnord' in strings
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@testing.uses_deprecated(r'See DDLEvents')
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def test_table_by_metadata_deprecated(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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DDL('mxyzptlk').execute_at('before-create', users)
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DDL('klptzyxm').execute_at('after-create', users)
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DDL('xyzzy').execute_at('before-drop', users)
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DDL('fnord').execute_at('after-drop', users)
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metadata.create_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' in strings
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assert 'klptzyxm' in strings
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assert 'xyzzy' not in strings
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assert 'fnord' not in strings
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del engine.mock[:]
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metadata.drop_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' not in strings
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assert 'klptzyxm' not in strings
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assert 'xyzzy' in strings
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assert 'fnord' in strings
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def test_deprecated_append_ddl_listener_table(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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canary = []
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users.append_ddl_listener('before-create',
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lambda e, t, b:canary.append('mxyzptlk')
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)
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users.append_ddl_listener('after-create',
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lambda e, t, b:canary.append('klptzyxm')
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)
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users.append_ddl_listener('before-drop',
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lambda e, t, b:canary.append('xyzzy')
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)
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users.append_ddl_listener('after-drop',
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lambda e, t, b:canary.append('fnord')
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)
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metadata.create_all()
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assert 'mxyzptlk' in canary
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assert 'klptzyxm' in canary
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assert 'xyzzy' not in canary
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assert 'fnord' not in canary
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del engine.mock[:]
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canary[:] = []
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metadata.drop_all()
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assert 'mxyzptlk' not in canary
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assert 'klptzyxm' not in canary
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assert 'xyzzy' in canary
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assert 'fnord' in canary
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def test_deprecated_append_ddl_listener_metadata(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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canary = []
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metadata.append_ddl_listener('before-create',
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lambda e, t, b, tables=None:canary.append('mxyzptlk')
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)
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metadata.append_ddl_listener('after-create',
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lambda e, t, b, tables=None:canary.append('klptzyxm')
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)
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metadata.append_ddl_listener('before-drop',
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lambda e, t, b, tables=None:canary.append('xyzzy')
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)
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metadata.append_ddl_listener('after-drop',
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lambda e, t, b, tables=None:canary.append('fnord')
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)
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metadata.create_all()
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assert 'mxyzptlk' in canary
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assert 'klptzyxm' in canary
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assert 'xyzzy' not in canary
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assert 'fnord' not in canary
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del engine.mock[:]
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canary[:] = []
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metadata.drop_all()
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assert 'mxyzptlk' not in canary
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assert 'klptzyxm' not in canary
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assert 'xyzzy' in canary
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assert 'fnord' in canary
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def test_metadata(self):
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metadata, engine = self.metadata, self.engine
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event.listen(metadata, 'before_create', DDL('mxyzptlk'))
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event.listen(metadata, 'after_create', DDL('klptzyxm'))
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event.listen(metadata, 'before_drop', DDL('xyzzy'))
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event.listen(metadata, 'after_drop', DDL('fnord'))
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metadata.create_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' in strings
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assert 'klptzyxm' in strings
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assert 'xyzzy' not in strings
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assert 'fnord' not in strings
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del engine.mock[:]
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metadata.drop_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' not in strings
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assert 'klptzyxm' not in strings
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assert 'xyzzy' in strings
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assert 'fnord' in strings
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@testing.uses_deprecated(r'See DDLEvents')
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def test_metadata_deprecated(self):
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metadata, engine = self.metadata, self.engine
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DDL('mxyzptlk').execute_at('before-create', metadata)
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DDL('klptzyxm').execute_at('after-create', metadata)
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DDL('xyzzy').execute_at('before-drop', metadata)
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DDL('fnord').execute_at('after-drop', metadata)
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metadata.create_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' in strings
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assert 'klptzyxm' in strings
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assert 'xyzzy' not in strings
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assert 'fnord' not in strings
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del engine.mock[:]
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metadata.drop_all()
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strings = [str(x) for x in engine.mock]
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assert 'mxyzptlk' not in strings
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assert 'klptzyxm' not in strings
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assert 'xyzzy' in strings
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assert 'fnord' in strings
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def test_conditional_constraint(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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nonpg_mock = engines.mock_engine(dialect_name='sqlite')
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pg_mock = engines.mock_engine(dialect_name='postgresql')
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constraint = CheckConstraint('a < b', name='my_test_constraint'
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, table=users)
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# by placing the constraint in an Add/Drop construct, the
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# 'inline_ddl' flag is set to False
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event.listen(
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users,
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'after_create',
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AddConstraint(constraint).execute_if(dialect='postgresql'),
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)
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event.listen(
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users,
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'before_drop',
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DropConstraint(constraint).execute_if(dialect='postgresql'),
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)
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metadata.create_all(bind=nonpg_mock)
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strings = ' '.join(str(x) for x in nonpg_mock.mock)
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assert 'my_test_constraint' not in strings
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metadata.drop_all(bind=nonpg_mock)
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strings = ' '.join(str(x) for x in nonpg_mock.mock)
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assert 'my_test_constraint' not in strings
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metadata.create_all(bind=pg_mock)
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strings = ' '.join(str(x) for x in pg_mock.mock)
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assert 'my_test_constraint' in strings
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metadata.drop_all(bind=pg_mock)
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strings = ' '.join(str(x) for x in pg_mock.mock)
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assert 'my_test_constraint' in strings
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@testing.uses_deprecated(r'See DDLEvents')
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def test_conditional_constraint_deprecated(self):
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metadata, users, engine = self.metadata, self.users, self.engine
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nonpg_mock = engines.mock_engine(dialect_name='sqlite')
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pg_mock = engines.mock_engine(dialect_name='postgresql')
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constraint = CheckConstraint('a < b', name='my_test_constraint'
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, table=users)
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# by placing the constraint in an Add/Drop construct, the
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# 'inline_ddl' flag is set to False
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AddConstraint(constraint, on='postgresql'
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).execute_at('after-create', users)
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DropConstraint(constraint, on='postgresql'
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).execute_at('before-drop', users)
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metadata.create_all(bind=nonpg_mock)
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strings = ' '.join(str(x) for x in nonpg_mock.mock)
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assert 'my_test_constraint' not in strings
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metadata.drop_all(bind=nonpg_mock)
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strings = ' '.join(str(x) for x in nonpg_mock.mock)
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assert 'my_test_constraint' not in strings
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metadata.create_all(bind=pg_mock)
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strings = ' '.join(str(x) for x in pg_mock.mock)
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assert 'my_test_constraint' in strings
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metadata.drop_all(bind=pg_mock)
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strings = ' '.join(str(x) for x in pg_mock.mock)
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assert 'my_test_constraint' in strings
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def test_ddl_execute(self):
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try:
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engine = create_engine('sqlite:///')
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except ImportError:
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raise SkipTest('Requires sqlite')
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cx = engine.connect()
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table = self.users
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ddl = DDL('SELECT 1')
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for py in ('engine.execute(ddl)',
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'engine.execute(ddl, table)',
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'cx.execute(ddl)',
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'cx.execute(ddl, table)',
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'ddl.execute(engine)',
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'ddl.execute(engine, table)',
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'ddl.execute(cx)',
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'ddl.execute(cx, table)'):
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r = eval(py)
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assert list(r) == [(1,)], py
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for py in ('ddl.execute()',
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'ddl.execute(target=table)'):
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try:
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r = eval(py)
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assert False
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except tsa.exc.UnboundExecutionError:
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pass
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for bind in engine, cx:
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ddl.bind = bind
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for py in ('ddl.execute()',
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'ddl.execute(target=table)'):
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r = eval(py)
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assert list(r) == [(1,)], py
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|
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@testing.fails_on('postgresql+pg8000', 'pg8000 requires explicit types')
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def test_platform_escape(self):
|
|
"""test the escaping of % characters in the DDL construct."""
|
|
|
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default_from = testing.db.dialect.statement_compiler(
|
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testing.db.dialect, None).default_from()
|
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|
|
# We're abusing the DDL()
|
|
# construct here by pushing a SELECT through it
|
|
# so that we can verify the round trip.
|
|
# the DDL() will trigger autocommit, which prohibits
|
|
# some DBAPIs from returning results (pyodbc), so we
|
|
# run in an explicit transaction.
|
|
with testing.db.begin() as conn:
|
|
eq_(
|
|
conn.execute(
|
|
text("select 'foo%something'" + default_from)
|
|
).scalar(),
|
|
'foo%something'
|
|
)
|
|
|
|
eq_(
|
|
conn.execute(
|
|
DDL("select 'foo%%something'" + default_from)
|
|
).scalar(),
|
|
'foo%something'
|
|
)
|
|
|
|
|
|
|
|
|
|
class DDLTest(fixtures.TestBase, AssertsCompiledSQL):
|
|
def mock_engine(self):
|
|
executor = lambda *a, **kw: None
|
|
engine = create_engine(testing.db.name + '://',
|
|
strategy='mock', executor=executor)
|
|
engine.dialect.identifier_preparer = \
|
|
tsa.sql.compiler.IdentifierPreparer(engine.dialect)
|
|
return engine
|
|
|
|
def test_tokens(self):
|
|
m = MetaData()
|
|
sane_alone = Table('t', m, Column('id', Integer))
|
|
sane_schema = Table('t', m, Column('id', Integer), schema='s')
|
|
insane_alone = Table('t t', m, Column('id', Integer))
|
|
insane_schema = Table('t t', m, Column('id', Integer),
|
|
schema='s s')
|
|
ddl = DDL('%(schema)s-%(table)s-%(fullname)s')
|
|
dialect = self.mock_engine().dialect
|
|
self.assert_compile(ddl.against(sane_alone), '-t-t',
|
|
dialect=dialect)
|
|
self.assert_compile(ddl.against(sane_schema), 's-t-s.t',
|
|
dialect=dialect)
|
|
self.assert_compile(ddl.against(insane_alone), '-"t t"-"t t"',
|
|
dialect=dialect)
|
|
self.assert_compile(ddl.against(insane_schema),
|
|
'"s s"-"t t"-"s s"."t t"', dialect=dialect)
|
|
|
|
# overrides are used piece-meal and verbatim.
|
|
|
|
ddl = DDL('%(schema)s-%(table)s-%(fullname)s-%(bonus)s',
|
|
context={'schema': 'S S', 'table': 'T T', 'bonus': 'b'
|
|
})
|
|
self.assert_compile(ddl.against(sane_alone), 'S S-T T-t-b',
|
|
dialect=dialect)
|
|
self.assert_compile(ddl.against(sane_schema), 'S S-T T-s.t-b',
|
|
dialect=dialect)
|
|
self.assert_compile(ddl.against(insane_alone), 'S S-T T-"t t"-b'
|
|
, dialect=dialect)
|
|
self.assert_compile(ddl.against(insane_schema),
|
|
'S S-T T-"s s"."t t"-b', dialect=dialect)
|
|
|
|
|
|
def test_filter(self):
|
|
cx = self.mock_engine()
|
|
|
|
tbl = Table('t', MetaData(), Column('id', Integer))
|
|
target = cx.name
|
|
|
|
assert DDL('')._should_execute(tbl, cx)
|
|
assert DDL('').execute_if(dialect=target)._should_execute(tbl, cx)
|
|
assert not DDL('').execute_if(dialect='bogus').\
|
|
_should_execute(tbl, cx)
|
|
assert DDL('').execute_if(callable_=lambda d, y,z, **kw: True).\
|
|
_should_execute(tbl, cx)
|
|
assert(DDL('').execute_if(
|
|
callable_=lambda d, y,z, **kw: z.engine.name
|
|
!= 'bogus').
|
|
_should_execute(tbl, cx))
|
|
|
|
@testing.uses_deprecated(r'See DDLEvents')
|
|
def test_filter_deprecated(self):
|
|
cx = self.mock_engine()
|
|
|
|
tbl = Table('t', MetaData(), Column('id', Integer))
|
|
target = cx.name
|
|
|
|
assert DDL('')._should_execute_deprecated('x', tbl, cx)
|
|
assert DDL('', on=target)._should_execute_deprecated('x', tbl, cx)
|
|
assert not DDL('', on='bogus').\
|
|
_should_execute_deprecated('x', tbl, cx)
|
|
assert DDL('', on=lambda d, x,y,z: True).\
|
|
_should_execute_deprecated('x', tbl, cx)
|
|
assert(DDL('', on=lambda d, x,y,z: z.engine.name != 'bogus').
|
|
_should_execute_deprecated('x', tbl, cx))
|
|
|
|
def test_repr(self):
|
|
assert repr(DDL('s'))
|
|
assert repr(DDL('s', on='engine'))
|
|
assert repr(DDL('s', on=lambda x: 1))
|
|
assert repr(DDL('s', context={'a':1}))
|
|
assert repr(DDL('s', on='engine', context={'a':1}))
|
|
|
|
|