code: def dataset_info():
      """Return dataset info."""
      return {
          "name": "1",
          "file_type": "nc_ici_l1b_rad",
          "file_key": "data/measurement_data/ici_radiance_183",
          "coordinates": ["lat_pixels_horn_1", "lon_pixels_horn_1"],
          "n_183": 0,
          "chan_index": 0,
          "calibration": "brightness_temperature",
      }
  
imports: from datetime import datetime
  from unittest.mock import patch
  import numpy
  import pytest
  import xarray
  from netCDF4 import Dataset
  from satpy.readers.ici_l1b_nc import IciL1bNCFileHandler, InterpolationType
label_desc: Use image node_id 3 for calling a global function with example usage: dataset_info() and returns: dict