def test_load_dialect_impl(self):
dialect = mysql_base.MySQLDialect()
impl = self.sqltype.load_dialect_impl(dialect)
self.assertNotEqual(types.Text, type(impl))
dialect = sqlite_base.SQLiteDialect()
impl = self.sqltype.load_dialect_impl(dialect)
self.assertEqual(types.Text, type(impl))
def test_unsupported_cast_literal_bind(self):
expr = cast(column('foo', Integer) + 5, Float)
with expect_warnings("Datatype FLOAT does not support CAST on MySQL;"):
self.assert_compile(expr, "(foo + 5)", literal_binds=True)
dialect = mysql.MySQLDialect()
dialect.server_version_info = (3, 9, 8)
with expect_warnings("Current MySQL version does not support CAST"):
eq_(
str(
expr.compile(dialect=dialect,
compile_kwargs={"literal_binds": True})),
"(foo + 5)")
