class_docstr: Test the AtmsL1bNCFileHandler reader.
class_docstr_tok: ["Test","the","AtmsL1bNCFileHandler","reader","."]
docstr: Test start time.
docstr_tok: ["Test","start","time","."]
code: def test_start_time(self, reader):
      """Test start time."""
      assert reader.start_time == datetime(2000, 1, 2, 3, 4, 5)
  
file_path: satpy/satpy/tests/reader_tests/test_atms_l1b_nc.py
imports: from datetime import datetime
  import numpy
  import pytest
  import xarray
  from satpy.readers.atms_l1b_nc import AtmsL1bNCFileHandler
label_desc: Use image node_id 1 for calling the TestAtsmsL1bNCFileHandler obj's underlying member method code with example usage: obj.test_start_time(reader) without return types