def METHOD_NAME(self):
    G1 = self.sch[0].group( 'G1')
    self.assertTrue(G1.name == 'G1')
    self.assertTrue(G1.num_wells == 2)
    names = G1.well_names
    self.assertEqual(2, len(names))
    self.assertTrue(self.sch.get_well('INJ', 0).isinjector())
    self.assertTrue(self.sch.get_well('PROD', 0).isproducer())
    with self.assertRaises(Exception):
        self.sch[0].group('foo')