code: def test_via_decorator(self, x, numeral_type):
      self.assertIn(x, (-1, 1, 0))
      self.assertIn(numeral_type, (float, int))
  
imports: import numpy
  from absl.testing import parameterized
  from keras.testing import test_case
  from keras.testing import test_utils
label_desc: Use image node_id 3 for calling the NamedProductTest obj's underlying member method code with example usage: obj.test_via_decorator(x, numeral_type) without return types