async def test_duplicate_values(self):
    with self.assertRaisesRegex(FieldError, 'Duplicate key intnum'):
        (await IntFields.all().values('intnum', 'intnum'))
async def test_duplicate_values(self):
    with self.assertRaisesRegex(FieldError, 'Duplicate key intnum'):
        (await IntFields.all().values('intnum', 'intnum'))