test: skip composite grouping tests (#61)

Author: Ilya Gurov

test/test_suite.py

@@ -83,6 +83,7 @@
 from sqlalchemy.testing.suite.test_select import (
     IsOrIsNotDistinctFromTest as _IsOrIsNotDistinctFromTest,
 )
+from sqlalchemy.testing.suite.test_select import OrderByLabelTest as _OrderByLabelTest
 from sqlalchemy.testing.suite.test_types import BooleanTest as _BooleanTest
 from sqlalchemy.testing.suite.test_types import IntegerTest as _IntegerTest
 from sqlalchemy.testing.suite.test_types import _LiteralRoundTripFixture
@@ -823,6 +824,11 @@ class IsOrIsNotDistinctFromTest(_IsOrIsNotDistinctFromTest):
     pass
 
 
+@pytest.mark.skip("Spanner doesn't support composed GROUP BY")
+class OrderByLabelTest(_OrderByLabelTest):
+    pass
+
+
 class BytesTest(_LiteralRoundTripFixture, fixtures.TestBase):
     __backend__ = True