class_docstr: Test the HRITJMAFileHandler.
class_docstr_tok: ["Test","the","HRITJMAFileHandler","."]
docstr: Test computation of scanline acquisition times.
docstr_tok: ["Test","computation","of","scanline","acquisition","times","."]
code: def test_get_acq_time(self):
      """Test computation of scanline acquisition times."""
      dt_line = np.arange(1, 11000 + 1).astype("timedelta64[s]")
      acq_time_exp = np.datetime64("1970-01-01", "ns") + dt_line
      for platform in ["Himawari-8", "MTSAT-2"]:
          # Results are not exactly identical because timestamps are stored in
          # the header with only 6 decimals precision (max diff here: 45 msec).
          mda = self._get_mda(platform=platform)
          reader = self._get_reader(mda=mda)
          np.testing.assert_allclose(
              reader.acq_time.astype(np.int64),
              acq_time_exp.astype(np.int64),
              atol=45000000,
          )
  
imports: import unittest
  from unittest import mock
  import dask.array
  import numpy
  from xarray import DataArray
  from satpy.tests.utils import make_dataid
label_desc: Use image node_id 11 for calling the TestHRITJMAFileHandler obj's underlying member method code with example usage: obj.test_get_acq_time() without return types