class_docstr: Test the AMI L1b reader.
class_docstr_tok: ["Test","the","AMI","L1b","reader","."]
docstr: Test getting basic file attributes.
docstr_tok: ["Test","getting","basic","file","attributes","."]
code: def test_basic_attributes(self):
      """Test getting basic file attributes."""
      from datetime import datetime
  
      assert self.reader.start_time == datetime(
          2019, 9, 30, 3, 0, 31, 957882
      )
      assert self.reader.end_time == datetime(
          2019, 9, 30, 3, 9, 35, 606133
      )
  
imports: import unittest
  from unittest import mock
  import dask.array
  import numpy
  import xarray
  from pytest import approx, raises
label_desc: Use image node_id 3 for calling the TestAMIL1bNetCDF obj's underlying member method code with example usage: obj.test_basic_attributes() without return types