async def test_many_flat_values_list(self):
    with self.assertRaisesRegex(TypeError, 'You can flat value_list only if contains one field'):
        (await IntFields.all().values_list('intnum', 'intnum_null', flat=True))
async def test_many_flat_values_list(self):
    with self.assertRaisesRegex(TypeError, 'You can flat value_list only if contains one field'):
        (await IntFields.all().values_list('intnum', 'intnum_null', flat=True))