code: def test_dmtx0b():
      # Test design matrix creation when no paradigm is provided
      tr = 1.0
      frametimes = np.linspace(0, 127 * tr, 128)
      X, names = dmtx_light(
          frametimes, drift_model="polynomial", drift_order=3
      )
      assert_almost_equal(X[:, 0], np.linspace(-0.5, 0.5, 128))
  
imports: import os.path
  from unittest import skipIf
  import numpy
  from numpy.testing import assert_almost_equal, assert_array_equal
  from ..design_matrix import _convolve_regressors, _cosine_drift, dmtx_from_csv, dmtx_light, make_dmtx
  from ..experimental_paradigm import BlockParadigm, EventRelatedParadigm
label_desc: Use image node_id 9 for calling a global function with example usage: test_dmtx0b() without return types