code: def test_zero(self):
      data = pd.Series([2, 0, 0, 5, 0, -4])
      answer = pd.Series([np.nan, 2, 0, 5, 5, 4])
      primitive_func = AbsoluteDiff().get_function()
      given_answer = primitive_func(data)
      np.testing.assert_array_equal(given_answer, answer)
  
file_path: featuretools/featuretools/tests/primitive_tests/test_absolute_diff.py
imports: import numpy
  import pandas
  import pytest
  from featuretools.primitives import AbsoluteDiff
label_desc: Use image node_id 5 for calling the TestAbsoluteDiff obj's underlying member method code with example usage: obj.test_zero() without return types