code: def test_date_attribute(self):
      expected = np.array(
          [
              "1999-01-31",
              "2004-12-01",
              "1817-04-28",
              "2100-09-10",
              "2013-11-30",
              "1631-10-15",
          ],
          dtype="datetime64[D]",
      )
  
      assert_array_equal(self.data["attr_date"], expected)
  
imports: import datetime
  import os
  import sys
  from os.path import join
  from io import StringIO
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal, assert_equal, assert_
  import pytest
  from pytest import raises
  from scipy.io.arff.arffread import loadarff
  from scipy.io.arff.arffread import read_header, ParseArffError
label_desc: Use image node_id 4 for calling the TestDateAttribute obj's underlying member method code with example usage: obj.test_date_attribute() without return types