def test_equals_2(self):
     self.assertEqual(dig_pow(46288, 3), 51)
 def test_equals_4(self):
     self.assertEqual(dig_pow(92, 1), -1)
 def test_equals(self):
     self.assertEqual(dig_pow(695, 2), 2)
 def test_equals_3(self):
     self.assertEqual(dig_pow(89, 1), 1)