code: def test_insufficient_2d_data():
      with pytest.raises(ValueError):
          Xt = np.random.rand(10, nvox)
          y = np.random.rand(10, 2)
          iem_2d.fit(Xt, y)
  
imports: import pytest
  import numpy
  import logging
  from brainiak.reconstruct.iem import InvertedEncoding1D, InvertedEncoding2D
  from brainiak.utils.fmrisim import generate_1d_gaussian_rfs, generate_1d_rf_responses
  from scipy.stats import circmean
label_desc: Use image node_id 22 for calling a global function with example usage: test_insufficient_2d_data() without return types