docstr: Test accuracy of integrating the deterministic dynamics for equilibrium velocity [6, p. 116]
docstr_tok: ["Test","accuracy","of","integrating","the","deterministic","dynamics","for","equilibrium","velocity","[","6",",","p.","116","]"]
code: def test_equlibrium_velocity(self):
      """
      Test accuracy of integrating the deterministic dynamics for equilibrium velocity [6, p. 116]
      """
      ds = velocity(tau=1.01 / 0.3, R=0)
      v0 = ds.deterministic
  
      Nt = 100  # Number of time steps
      v = ds.simulate(Nt, v0=np.array([v0, 0.0]))
  
      return np.testing.assert_array_almost_equal(
          v[:, 0] - v0, np.zeros(Nt), decimal=8
      )
  
imports: import unittest
  import dask.dataframe
  import numpy
  import pandas
  from tsfresh import extract_features, extract_relevant_features
  from tsfresh.examples.driftbif_simulation import load_driftbif, sample_tau, velocity
  from tsfresh.feature_extraction import MinimalFCParameters
label_desc: Use image node_id 4 for calling the DriftBifSimlationTestCase obj's underlying member method code with example usage: obj.test_equlibrium_velocity() and returns: np