class_docstr: Test IASI L2 reader.
class_docstr_tok: ["Test","IASI","L2","reader","."]
docstr: Test time properties.
docstr_tok: ["Test","time","properties","."]
code: def test_time_properties(self):
      """Test time properties."""
      import datetime as dt
  
      assert isinstance(self.reader.start_time, dt.datetime)
      assert isinstance(self.reader.end_time, dt.datetime)
  
imports: import math
  import os
  import unittest
  import numpy
  import pytest
  import xarray
label_desc: Use image node_id 9 for calling the TestIasiL2 obj's underlying member method code with example usage: obj.test_time_properties() without return types