code: def _test_dataset():
      return dict(
          measurements=np.zeros((20, 30)),
          wavelengths=np.linspace(1.0, 2.0, 20),
          center_wavelength=1.5,
      )
  
file_path: probability/spinoffs/inference_gym/inference_gym/targets/plasma_spectroscopy_test.py
imports: from absl.testing import parameterized
  import numpy
  from tensorflow_probability.python.internal import test_util
  from inference_gym.internal import test_util
  from inference_gym.targets import plasma_spectroscopy
label_desc: Use image node_id 1 for calling a global function with example usage: _test_dataset() and returns: dict