class_docstr: Test the GACLAC file handler.
docstr: Test slicing.
code: def test_slice(self, _slice):  # noqa: PT019
      """Test slicing."""
  
      def _slice_patched(data):
          return data[1:3]
  
      _slice.side_effect = _slice_patched
  
      data = np.zeros((4, 2))
      times = np.array([1, 2, 3, 4], dtype="datetime64[us]")
  
      fh = _get_fh_mocked(
          start_line=1, end_line=3, strip_invalid_coords=False
      )
      data_slc, times_slc = fh.slice(data, times)
      np.testing.assert_array_equal(data_slc, data[1:3])
      np.testing.assert_array_equal(times_slc, times[1:3])
      assert fh.start_time == datetime(1970, 1, 1, 0, 0, 0, 2)
      assert fh.end_time == datetime(1970, 1, 1, 0, 0, 0, 3)
  
imports: from datetime import datetime
  from unittest import TestCase, mock
  import dask.array
  import numpy
  import pytest
  import xarray
label_desc: Use image node_id 11 for calling the TestGACLACFile obj's underlying member method code with example usage: obj.test_slice(_slice) and returns: data