mirror of
https://github.com/sqlalchemy/sqlalchemy.git
synced 2026-05-30 12:34:52 -04:00
Mike Bayer
573 lines
20 KiB
Python
573 lines
20 KiB
Python
from test.lib.testing import assert_raises
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from test.lib.testing import assert_raises_message
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from test.lib.testing import emits_warning
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import pickle
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from sqlalchemy import Integer, String, UniqueConstraint, \
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CheckConstraint, ForeignKey, MetaData, Sequence, \
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ForeignKeyConstraint, ColumnDefault, Index
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from test.lib.schema import Table, Column
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from sqlalchemy import schema, exc
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import sqlalchemy as tsa
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from test.lib import TestBase, ComparesTables, \
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AssertsCompiledSQL, testing, engines
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from test.lib.testing import eq_
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class MetaDataTest(TestBase, ComparesTables):
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def test_metadata_connect(self):
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metadata = MetaData()
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t1 = Table('table1', metadata,
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Column('col1', Integer, primary_key=True),
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Column('col2', String(20)))
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metadata.bind = testing.db
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metadata.create_all()
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try:
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assert t1.count().scalar() == 0
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finally:
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metadata.drop_all()
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def test_metadata_contains(self):
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metadata = MetaData()
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t1 = Table('t1', metadata, Column('x', Integer))
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t2 = Table('t2', metadata, Column('x', Integer), schema='foo')
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t3 = Table('t2', MetaData(), Column('x', Integer))
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t4 = Table('t1', MetaData(), Column('x', Integer), schema='foo')
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assert "t1" in metadata
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assert "foo.t2" in metadata
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assert "t2" not in metadata
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assert "foo.t1" not in metadata
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assert t1 in metadata
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assert t2 in metadata
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assert t3 not in metadata
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assert t4 not in metadata
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def test_uninitialized_column_copy(self):
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for col in [
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Column('foo', String(), nullable=False),
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Column('baz', String(), unique=True),
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Column(Integer(), primary_key=True),
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Column('bar', Integer(), Sequence('foo_seq'), primary_key=True,
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key='bar'),
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Column(Integer(), ForeignKey('bat.blah')),
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Column('bar', Integer(), ForeignKey('bat.blah'), primary_key=True,
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key='bar'),
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Column('bar', Integer(), info={'foo':'bar'}),
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]:
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c2 = col.copy()
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for attr in ('name', 'type', 'nullable',
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'primary_key', 'key', 'unique', 'info'):
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eq_(getattr(col, attr), getattr(c2, attr))
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eq_(len(col.foreign_keys), len(c2.foreign_keys))
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if col.default:
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eq_(c2.default.name, 'foo_seq')
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for a1, a2 in zip(col.foreign_keys, c2.foreign_keys):
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assert a1 is not a2
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eq_(a2._colspec, 'bat.blah')
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def test_uninitialized_column_copy_events(self):
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msgs = []
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def write(t, c):
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msgs.append("attach %s.%s" % (t.name, c.name))
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c1 = Column('foo', String())
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c1._on_table_attach(write)
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m = MetaData()
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for i in xrange(3):
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cx = c1.copy()
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t = Table('foo%d' % i, m, cx)
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eq_(msgs, ['attach foo0.foo', 'attach foo1.foo', 'attach foo2.foo'])
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def test_schema_collection_add(self):
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metadata = MetaData()
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t1 = Table('t1', metadata, Column('x', Integer), schema='foo')
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t2 = Table('t2', metadata, Column('x', Integer), schema='bar')
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t3 = Table('t3', metadata, Column('x', Integer))
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eq_(metadata._schemas, set(['foo', 'bar']))
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eq_(len(metadata.tables), 3)
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def test_schema_collection_remove(self):
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metadata = MetaData()
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t1 = Table('t1', metadata, Column('x', Integer), schema='foo')
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t2 = Table('t2', metadata, Column('x', Integer), schema='bar')
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t3 = Table('t3', metadata, Column('x', Integer), schema='bar')
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metadata.remove(t3)
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eq_(metadata._schemas, set(['foo', 'bar']))
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eq_(len(metadata.tables), 2)
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metadata.remove(t1)
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eq_(metadata._schemas, set(['bar']))
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eq_(len(metadata.tables), 1)
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def test_schema_collection_remove_all(self):
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metadata = MetaData()
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t1 = Table('t1', metadata, Column('x', Integer), schema='foo')
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t2 = Table('t2', metadata, Column('x', Integer), schema='bar')
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metadata.clear()
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eq_(metadata._schemas, set())
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eq_(len(metadata.tables), 0)
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def test_metadata_tables_immutable(self):
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metadata = MetaData()
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t1 = Table('t1', metadata, Column('x', Integer))
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assert 't1' in metadata.tables
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assert_raises(
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TypeError,
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lambda: metadata.tables.pop('t1')
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)
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@testing.provide_metadata
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def test_dupe_tables(self):
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t1 = Table('table1', metadata,
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Column('col1', Integer, primary_key=True),
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Column('col2', String(20)))
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metadata.create_all()
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t1 = Table('table1', metadata, autoload=True)
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def go():
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t2 = Table('table1', metadata,
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Column('col1', Integer, primary_key=True),
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Column('col2', String(20)))
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assert_raises_message(
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tsa.exc.InvalidRequestError,
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"Table 'table1' is already defined for this "\
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"MetaData instance. Specify 'useexisting=True' "\
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"to redefine options and columns on an existing "\
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"Table object.",
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go
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)
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def test_fk_copy(self):
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c1 = Column('foo', Integer)
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c2 = Column('bar', Integer)
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m = MetaData()
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t1 = Table('t', m, c1, c2)
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kw = dict(onupdate="X",
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ondelete="Y", use_alter=True, name='f1',
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deferrable="Z", initially="Q", link_to_name=True)
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fk1 = ForeignKey(c1, **kw)
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fk2 = ForeignKeyConstraint((c1,), (c2,), **kw)
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t1.append_constraint(fk2)
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fk1c = fk1.copy()
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fk2c = fk2.copy()
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for k in kw:
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eq_(getattr(fk1c, k), kw[k])
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eq_(getattr(fk2c, k), kw[k])
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def test_fk_construct(self):
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c1 = Column('foo', Integer)
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c2 = Column('bar', Integer)
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m = MetaData()
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t1 = Table('t', m, c1, c2)
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fk1 = ForeignKeyConstraint(('foo', ), ('bar', ), table=t1)
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assert fk1 in t1.constraints
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@testing.exclude('mysql', '<', (4, 1, 1), 'early types are squirrely')
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def test_to_metadata(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('myid', Integer, Sequence('foo_id_seq'), primary_key=True),
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Column('name', String(40), nullable=True),
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Column('foo', String(40), nullable=False, server_default='x',
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server_onupdate='q'),
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Column('bar', String(40), nullable=False, default='y',
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onupdate='z'),
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Column('description', String(30),
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CheckConstraint("description='hi'")),
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UniqueConstraint('name'),
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test_needs_fk=True,
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)
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table2 = Table('othertable', meta,
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Column('id', Integer, Sequence('foo_seq'), primary_key=True),
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Column('myid', Integer,
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ForeignKey('mytable.myid'),
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),
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test_needs_fk=True,
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)
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def test_to_metadata():
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meta2 = MetaData()
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table_c = table.tometadata(meta2)
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table2_c = table2.tometadata(meta2)
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return (table_c, table2_c)
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def test_pickle():
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meta.bind = testing.db
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meta2 = pickle.loads(pickle.dumps(meta))
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assert meta2.bind is None
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meta3 = pickle.loads(pickle.dumps(meta2))
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return (meta2.tables['mytable'], meta2.tables['othertable'])
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def test_pickle_via_reflect():
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# this is the most common use case, pickling the results of a
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# database reflection
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meta2 = MetaData(bind=testing.db)
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t1 = Table('mytable', meta2, autoload=True)
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t2 = Table('othertable', meta2, autoload=True)
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meta3 = pickle.loads(pickle.dumps(meta2))
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assert meta3.bind is None
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assert meta3.tables['mytable'] is not t1
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return (meta3.tables['mytable'], meta3.tables['othertable'])
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meta.create_all(testing.db)
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try:
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for test, has_constraints, reflect in (test_to_metadata,
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True, False), (test_pickle, True, False), \
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(test_pickle_via_reflect, False, True):
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table_c, table2_c = test()
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self.assert_tables_equal(table, table_c)
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self.assert_tables_equal(table2, table2_c)
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assert table is not table_c
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assert table.primary_key is not table_c.primary_key
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assert list(table2_c.c.myid.foreign_keys)[0].column \
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is table_c.c.myid
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assert list(table2_c.c.myid.foreign_keys)[0].column \
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is not table.c.myid
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assert 'x' in str(table_c.c.foo.server_default.arg)
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if not reflect:
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assert isinstance(table_c.c.myid.default, Sequence)
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assert str(table_c.c.foo.server_onupdate.arg) == 'q'
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assert str(table_c.c.bar.default.arg) == 'y'
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assert getattr(table_c.c.bar.onupdate.arg, 'arg',
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table_c.c.bar.onupdate.arg) == 'z'
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assert isinstance(table2_c.c.id.default, Sequence)
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# constraints dont get reflected for any dialect right
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# now
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if has_constraints:
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for c in table_c.c.description.constraints:
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if isinstance(c, CheckConstraint):
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break
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else:
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assert False
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assert str(c.sqltext) == "description='hi'"
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for c in table_c.constraints:
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if isinstance(c, UniqueConstraint):
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break
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else:
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assert False
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assert c.columns.contains_column(table_c.c.name)
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assert not c.columns.contains_column(table.c.name)
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finally:
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meta.drop_all(testing.db)
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def test_tometadata_with_schema(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('myid', Integer, primary_key=True),
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Column('name', String(40), nullable=True),
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Column('description', String(30),
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CheckConstraint("description='hi'")),
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UniqueConstraint('name'),
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test_needs_fk=True,
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)
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table2 = Table('othertable', meta,
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Column('id', Integer, primary_key=True),
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Column('myid', Integer, ForeignKey('mytable.myid')),
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test_needs_fk=True,
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)
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meta2 = MetaData()
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table_c = table.tometadata(meta2, schema='someschema')
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table2_c = table2.tometadata(meta2, schema='someschema')
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eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid
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== table2_c.c.myid))
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eq_(str(table_c.join(table2_c).onclause),
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'someschema.mytable.myid = someschema.othertable.myid')
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def test_tometadata_kwargs(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('myid', Integer, primary_key=True),
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mysql_engine='InnoDB',
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)
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meta2 = MetaData()
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table_c = table.tometadata(meta2)
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eq_(table.kwargs,table_c.kwargs)
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def test_tometadata_indexes(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('id', Integer, primary_key=True),
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Column('data1', Integer, index=True),
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Column('data2', Integer),
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)
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Index('multi',table.c.data1,table.c.data2),
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meta2 = MetaData()
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table_c = table.tometadata(meta2)
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def _get_key(i):
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return [i.name,i.unique] + \
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sorted(i.kwargs.items()) + \
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i.columns.keys()
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eq_(
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sorted([_get_key(i) for i in table.indexes]),
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sorted([_get_key(i) for i in table_c.indexes])
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)
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@emits_warning("Table '.+' already exists within the given MetaData")
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def test_tometadata_already_there(self):
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meta1 = MetaData()
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table1 = Table('mytable', meta1,
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Column('myid', Integer, primary_key=True),
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)
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meta2 = MetaData()
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table2 = Table('mytable', meta2,
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Column('yourid', Integer, primary_key=True),
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)
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meta3 = MetaData()
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table_c = table1.tometadata(meta2)
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table_d = table2.tometadata(meta2)
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# d'oh!
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assert table_c is table_d
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def test_tometadata_default_schema(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('myid', Integer, primary_key=True),
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Column('name', String(40), nullable=True),
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Column('description', String(30),
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CheckConstraint("description='hi'")),
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UniqueConstraint('name'),
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test_needs_fk=True,
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schema='myschema',
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)
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table2 = Table('othertable', meta,
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Column('id', Integer, primary_key=True),
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Column('myid', Integer, ForeignKey('myschema.mytable.myid')),
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test_needs_fk=True,
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schema='myschema',
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)
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meta2 = MetaData()
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table_c = table.tometadata(meta2)
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table2_c = table2.tometadata(meta2)
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eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid
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== table2_c.c.myid))
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eq_(str(table_c.join(table2_c).onclause),
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'myschema.mytable.myid = myschema.othertable.myid')
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def test_manual_dependencies(self):
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meta = MetaData()
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a = Table('a', meta, Column('foo', Integer))
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b = Table('b', meta, Column('foo', Integer))
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c = Table('c', meta, Column('foo', Integer))
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d = Table('d', meta, Column('foo', Integer))
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e = Table('e', meta, Column('foo', Integer))
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e.add_is_dependent_on(c)
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a.add_is_dependent_on(b)
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b.add_is_dependent_on(d)
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e.add_is_dependent_on(b)
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c.add_is_dependent_on(a)
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eq_(
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meta.sorted_tables,
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[d, b, a, c, e]
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)
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def test_tometadata_strip_schema(self):
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meta = MetaData()
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table = Table('mytable', meta,
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Column('myid', Integer, primary_key=True),
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Column('name', String(40), nullable=True),
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Column('description', String(30),
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CheckConstraint("description='hi'")),
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UniqueConstraint('name'),
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test_needs_fk=True,
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)
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table2 = Table('othertable', meta,
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Column('id', Integer, primary_key=True),
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Column('myid', Integer, ForeignKey('mytable.myid')),
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test_needs_fk=True,
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)
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meta2 = MetaData()
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table_c = table.tometadata(meta2, schema=None)
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table2_c = table2.tometadata(meta2, schema=None)
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eq_(str(table_c.join(table2_c).onclause), str(table_c.c.myid
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== table2_c.c.myid))
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eq_(str(table_c.join(table2_c).onclause),
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'mytable.myid = othertable.myid')
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def test_nonexistent(self):
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assert_raises(tsa.exc.NoSuchTableError, Table,
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'fake_table',
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MetaData(testing.db), autoload=True)
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class TableTest(TestBase, AssertsCompiledSQL):
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def test_prefixes(self):
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table1 = Table("temporary_table_1", MetaData(),
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Column("col1", Integer),
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prefixes = ["TEMPORARY"])
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self.assert_compile(
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schema.CreateTable(table1),
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"CREATE TEMPORARY TABLE temporary_table_1 (col1 INTEGER)"
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)
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table2 = Table("temporary_table_2", MetaData(),
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Column("col1", Integer),
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prefixes = ["VIRTUAL"])
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self.assert_compile(
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schema.CreateTable(table2),
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"CREATE VIRTUAL TABLE temporary_table_2 (col1 INTEGER)"
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)
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def test_table_info(self):
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metadata = MetaData()
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t1 = Table('foo', metadata, info={'x':'y'})
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t2 = Table('bar', metadata, info={})
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t3 = Table('bat', metadata)
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assert t1.info == {'x':'y'}
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assert t2.info == {}
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assert t3.info == {}
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for t in (t1, t2, t3):
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t.info['bar'] = 'zip'
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assert t.info['bar'] == 'zip'
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def test_c_immutable(self):
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m = MetaData()
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t1 = Table('t', m, Column('x', Integer), Column('y', Integer))
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assert_raises(
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TypeError,
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t1.c.extend, [Column('z', Integer)]
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)
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def assign():
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t1.c['z'] = Column('z', Integer)
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assert_raises(
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TypeError,
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assign
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)
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def assign():
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t1.c.z = Column('z', Integer)
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assert_raises(
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TypeError,
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assign
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)
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class ColumnDefinitionTest(TestBase):
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"""Test Column() construction."""
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|
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# flesh this out with explicit coverage...
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def columns(self):
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return [ Column(Integer),
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Column('b', Integer),
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Column(Integer),
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Column('d', Integer),
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Column(Integer, name='e'),
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Column(type_=Integer),
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Column(Integer()),
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Column('h', Integer()),
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|
Column(type_=Integer()) ]
|
|
|
|
def test_basic(self):
|
|
c = self.columns()
|
|
|
|
for i, v in ((0, 'a'), (2, 'c'), (5, 'f'), (6, 'g'), (8, 'i')):
|
|
c[i].name = v
|
|
c[i].key = v
|
|
del i, v
|
|
|
|
tbl = Table('table', MetaData(), *c)
|
|
|
|
for i, col in enumerate(tbl.c):
|
|
assert col.name == c[i].name
|
|
|
|
def test_incomplete(self):
|
|
c = self.columns()
|
|
|
|
assert_raises(exc.ArgumentError, Table, 't', MetaData(), *c)
|
|
|
|
def test_incomplete_key(self):
|
|
c = Column(Integer)
|
|
assert c.name is None
|
|
assert c.key is None
|
|
|
|
c.name = 'named'
|
|
t = Table('t', MetaData(), c)
|
|
|
|
assert c.name == 'named'
|
|
assert c.name == c.key
|
|
|
|
|
|
def test_bogus(self):
|
|
assert_raises(exc.ArgumentError, Column, 'foo', name='bar')
|
|
assert_raises(exc.ArgumentError, Column, 'foo', Integer,
|
|
type_=Integer())
|
|
|
|
|
|
class ColumnOptionsTest(TestBase):
|
|
|
|
def test_default_generators(self):
|
|
g1, g2 = Sequence('foo_id_seq'), ColumnDefault('f5')
|
|
assert Column(String, default=g1).default is g1
|
|
assert Column(String, onupdate=g1).onupdate is g1
|
|
assert Column(String, default=g2).default is g2
|
|
assert Column(String, onupdate=g2).onupdate is g2
|
|
|
|
def test_type_required(self):
|
|
assert_raises(exc.ArgumentError, Column)
|
|
assert_raises(exc.ArgumentError, Column, "foo")
|
|
assert_raises(exc.ArgumentError, Column, default="foo")
|
|
assert_raises(exc.ArgumentError, Column, Sequence("a"))
|
|
assert_raises(exc.ArgumentError, Column, "foo", default="foo")
|
|
assert_raises(exc.ArgumentError, Column, "foo", Sequence("a"))
|
|
Column(ForeignKey('bar.id'))
|
|
Column("foo", ForeignKey('bar.id'))
|
|
Column(ForeignKey('bar.id'), default="foo")
|
|
Column(ForeignKey('bar.id'), Sequence("a"))
|
|
Column("foo", ForeignKey('bar.id'), default="foo")
|
|
Column("foo", ForeignKey('bar.id'), Sequence("a"))
|
|
|
|
def test_column_info(self):
|
|
|
|
c1 = Column('foo', String, info={'x':'y'})
|
|
c2 = Column('bar', String, info={})
|
|
c3 = Column('bat', String)
|
|
assert c1.info == {'x':'y'}
|
|
assert c2.info == {}
|
|
assert c3.info == {}
|
|
|
|
for c in (c1, c2, c3):
|
|
c.info['bar'] = 'zip'
|
|
assert c.info['bar'] == 'zip'
|
|
|
|
|