code: def test_get_ti_dataset_radiance(sgli_ir_file):
      """Test getting thermal IR radiances."""
      handler = HDF5SGLI(sgli_ir_file, {"resolution": "L"}, {})
      did = dict(
          name="TI1",
          resolution=1000,
          polarization=None,
          calibration="radiance",
      )
      res = handler.get_dataset(
          did,
          {
              "file_key": "Image_data/Lt_TI01",
              "units": "",
              "standard_name": "",
          },
      )
      assert np.allclose(
          res[0, :], FULL_KM_ARRAY[0, :] * np.float32(0.0012) - 1.65
      )
      assert res.dtype == np.float32
  
imports: import sys
  from datetime import datetime, timedelta
  import dask
  import h5py
  import numpy
  import pytest
  from satpy.readers.sgli_l1b import HDF5SGLI
label_desc: Use image node_id 18 for calling a global function with example usage: test_get_ti_dataset_radiance(sgli_ir_file) without return types