code: def test_filter_date_days(date_dataframe):
      df = date_dataframe.filter_date(
          column_name="DATE", days=range(1, 5)
      )
  
      test_result = df.DATE.dt.day.unique()
      expected_result = np.arange(1, 5)
  
      assert np.array_equal(test_result, expected_result)
  
file_path: pyjanitor/tests/functions/test_filter_date.py
imports: import numpy
  import pandas
  import pytest
label_desc: Use image node_id 5 for calling a global function with example usage: test_filter_date_days(date_dataframe) without return types