def test_unsupported_expressoin(self):
t1, t2 = self.create_tables(2)
query = session.query(t1.c.x).join(t2, literal(True), any=True)
with self.assertRaises(exc.CompileError) as ex:
self.compile(query)
self.assertIn('Only tuple elements are supported', str(ex.exception))
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