class_docstr: Test the SCMIFileHandler reader.
docstr: Test data loading.
docstr_tok: ["Test","data","loading","."]
code: def test_data_load(self):
      """Test data loading."""
      from satpy.tests.utils import make_dataid
  
      res = self.reader.get_dataset(
          make_dataid(name="C05", calibration="reflectance"), {}
      )
  
      np.testing.assert_allclose(
          res.data, self.expected_rad, equal_nan=True
      )
      assert "scale_factor" not in res.attrs
      assert "_FillValue" not in res.attrs
      assert (
          res.attrs["standard_name"] == "toa_bidirectional_reflectance"
      )
      assert "orbital_parameters" in res.attrs
      orb_params = res.attrs["orbital_parameters"]
      assert orb_params["projection_longitude"] == -90.0
      assert orb_params["projection_latitude"] == 0.0
      assert orb_params["projection_altitude"] == 35785831.0
  
imports: import unittest
  from unittest import mock
  import numpy
  import pytest
  import xarray
label_desc: Use image node_id 3 for calling the TestSCMIFileHandler obj's underlying member method code with example usage: obj.test_data_load() without return types