def test_table_singleton_a(self):
"""set up for table singleton check
"""
#
# For this 'test', create a proxy engine instance, connect it
# to a real engine, and make it do some work
#
engine = ProxyEngine()
cats = Table('cats', engine,
Column('cat_id', Integer, primary_key=True),
Column('cat_name', String))
engine.connect(testbase.db_uri)
cats.create(engine)
cats.drop(engine)
ProxyEngineTest2.cats_table_a = cats
assert isinstance(cats, Table)
def test_table_singleton_a(self):
"""set up for table singleton check
"""
#
# For this 'test', create a proxy engine instance, connect it
# to a real engine, and make it do some work
#
engine = ProxyEngine()
cats = Table('cats', engine, Column('cat_id',
Integer,
primary_key=True),
Column('cat_name', String))
engine.connect(testbase.db_uri)
cats.create(engine)
cats.drop(engine)
ProxyEngineTest2.cats_table_a = cats
assert isinstance(cats, Table)
def test_table_singleton_b(self):
"""check that a table on a 2nd proxy engine instance gets 2nd table
instance
"""
#
# Now create a new proxy engine instance and attach the same
# table as the first test. This should result in 2 table instances,
# since different proxy engine instances can't attach to the
# same table instance
#
engine = ProxyEngine()
cats = Table('cats', engine,
Column('cat_id', Integer, primary_key=True),
Column('cat_name', String))
assert id(cats) != id(ProxyEngineTest2.cats_table_a)
# the real test -- if we're still using the old engine reference,
# this will fail because the old reference's local storage will
# not have the default attributes
engine.connect(testbase.db_uri)
cats.create(engine)
cats.drop(engine)
def test_table_singleton_b(self):
"""check that a table on a 2nd proxy engine instance gets 2nd table
instance
"""
#
# Now create a new proxy engine instance and attach the same
# table as the first test. This should result in 2 table instances,
# since different proxy engine instances can't attach to the
# same table instance
#
engine = ProxyEngine()
cats = Table('cats', engine, Column('cat_id',
Integer,
primary_key=True),
Column('cat_name', String))
assert id(cats) != id(ProxyEngineTest2.cats_table_a)
# the real test -- if we're still using the old engine reference,
# this will fail because the old reference's local storage will
# not have the default attributes
engine.connect(testbase.db_uri)
cats.create(engine)
cats.drop(engine)
