# -*- encoding: utf-8 from sqlalchemy.testing import eq_ from sqlalchemy import * from sqlalchemy import types, schema, event from sqlalchemy.databases import mssql from sqlalchemy.testing import fixtures, AssertsCompiledSQL, \ ComparesTables from sqlalchemy import testing from sqlalchemy.engine.reflection import Inspector from sqlalchemy import util class ReflectionTest(fixtures.TestBase, ComparesTables): __only_on__ = 'mssql' @testing.provide_metadata def test_basic_reflection(self): meta = self.metadata users = Table( 'engine_users', meta, Column('user_id', types.INT, primary_key=True), Column('user_name', types.VARCHAR(20), nullable=False), Column('test1', types.CHAR(5), nullable=False), Column('test2', types.Float(5), nullable=False), Column('test3', types.Text('max')), Column('test4', types.Numeric, nullable=False), Column('test5', types.DateTime), Column('parent_user_id', types.Integer, ForeignKey('engine_users.user_id')), Column('test6', types.DateTime, nullable=False), Column('test7', types.Text('max')), Column('test8', types.LargeBinary('max')), Column('test_passivedefault2', types.Integer, server_default='5'), Column('test9', types.BINARY(100)), Column('test_numeric', types.Numeric()), ) addresses = Table( 'engine_email_addresses', meta, Column('address_id', types.Integer, primary_key=True), Column('remote_user_id', types.Integer, ForeignKey(users.c.user_id)), Column('email_address', types.String(20)), ) meta.create_all() meta2 = MetaData() reflected_users = Table('engine_users', meta2, autoload=True, autoload_with=testing.db) reflected_addresses = Table('engine_email_addresses', meta2, autoload=True, autoload_with=testing.db) self.assert_tables_equal(users, reflected_users) self.assert_tables_equal(addresses, reflected_addresses) @testing.provide_metadata def test_identity(self): metadata = self.metadata table = Table( 'identity_test', metadata, Column('col1', Integer, Sequence('fred', 2, 3), primary_key=True) ) table.create() meta2 = MetaData(testing.db) table2 = Table('identity_test', meta2, autoload=True) sequence = isinstance(table2.c['col1'].default, schema.Sequence) \ and table2.c['col1'].default assert sequence.start == 2 assert sequence.increment == 3 @testing.emits_warning("Did not recognize") @testing.provide_metadata def test_skip_types(self): metadata = self.metadata testing.db.execute(""" create table foo (id integer primary key, data xml) """) t1 = Table('foo', metadata, autoload=True) assert isinstance(t1.c.id.type, Integer) assert isinstance(t1.c.data.type, types.NullType) @testing.provide_metadata def test_db_qualified_items(self): metadata = self.metadata Table('foo', metadata, Column('id', Integer, primary_key=True)) Table('bar', metadata, Column('id', Integer, primary_key=True), Column('foo_id', Integer, ForeignKey('foo.id', name="fkfoo")) ) metadata.create_all() dbname = testing.db.scalar("select db_name()") owner = testing.db.scalar("SELECT user_name()") inspector = inspect(testing.db) bar_via_db = inspector.get_foreign_keys( "bar", schema="%s.%s" % (dbname, owner)) eq_( bar_via_db, [{ 'referred_table': 'foo', 'referred_columns': ['id'], 'referred_schema': 'test.dbo', 'name': 'fkfoo', 'constrained_columns': ['foo_id']}] ) assert testing.db.has_table("bar", schema="test.dbo") m2 = MetaData() Table('bar', m2, schema="test.dbo", autoload=True, autoload_with=testing.db) eq_(m2.tables["test.dbo.foo"].schema, "test.dbo") @testing.provide_metadata def test_indexes_cols(self): metadata = self.metadata t1 = Table('t', metadata, Column('x', Integer), Column('y', Integer)) Index('foo', t1.c.x, t1.c.y) metadata.create_all() m2 = MetaData() t2 = Table('t', m2, autoload=True, autoload_with=testing.db) eq_( set(list(t2.indexes)[0].columns), set([t2.c['x'], t2.c.y]) ) @testing.provide_metadata def test_indexes_cols_with_commas(self): metadata = self.metadata t1 = Table('t', metadata, Column('x, col', Integer, key='x'), Column('y', Integer) ) Index('foo', t1.c.x, t1.c.y) metadata.create_all() m2 = MetaData() t2 = Table('t', m2, autoload=True, autoload_with=testing.db) eq_( set(list(t2.indexes)[0].columns), set([t2.c['x, col'], t2.c.y]) ) @testing.provide_metadata def test_indexes_cols_with_spaces(self): metadata = self.metadata t1 = Table('t', metadata, Column('x col', Integer, key='x'), Column('y', Integer)) Index('foo', t1.c.x, t1.c.y) metadata.create_all() m2 = MetaData() t2 = Table('t', m2, autoload=True, autoload_with=testing.db) eq_( set(list(t2.indexes)[0].columns), set([t2.c['x col'], t2.c.y]) ) from sqlalchemy.dialects.mssql.information_schema import CoerceUnicode, tables from sqlalchemy.dialects.mssql import base class InfoCoerceUnicodeTest(fixtures.TestBase, AssertsCompiledSQL): def test_info_unicode_coercion(self): dialect = mssql.dialect() value = CoerceUnicode().bind_processor(dialect)('a string') assert isinstance(value, util.text_type) def test_info_unicode_cast_no_2000(self): dialect = mssql.dialect() dialect.server_version_info = base.MS_2000_VERSION stmt = tables.c.table_name == 'somename' self.assert_compile( stmt, "[TABLES_1].[TABLE_NAME] = :table_name_1", dialect=dialect ) def test_info_unicode_cast(self): dialect = mssql.dialect() dialect.server_version_info = base.MS_2005_VERSION stmt = tables.c.table_name == 'somename' self.assert_compile( stmt, "[TABLES_1].[TABLE_NAME] = CAST(:table_name_1 AS NVARCHAR(max))", dialect=dialect ) class ReflectHugeViewTest(fixtures.TestBase): __only_on__ = 'mssql' # crashes on freetds 0.91, not worth it __skip_if__ = ( lambda: testing.requires.mssql_freetds.enabled, ) def setup(self): self.col_num = 150 self.metadata = MetaData(testing.db) t = Table('base_table', self.metadata, *[ Column("long_named_column_number_%d" % i, Integer) for i in range(self.col_num) ] ) self.view_str = view_str = \ "CREATE VIEW huge_named_view AS SELECT %s FROM base_table" % ( ",".join("long_named_column_number_%d" % i for i in range(self.col_num)) ) assert len(view_str) > 4000 event.listen(t, 'after_create', DDL(view_str) ) event.listen(t, 'before_drop', DDL("DROP VIEW huge_named_view") ) self.metadata.create_all() def teardown(self): self.metadata.drop_all() def test_inspect_view_definition(self): inspector = Inspector.from_engine(testing.db) view_def = inspector.get_view_definition("huge_named_view") eq_(view_def, self.view_str)