code: def test_hyperbolic_zero_freq(self):
      # f0=0 or f1=0 must raise a ValueError.
      method = "hyperbolic"
      t1 = 1.0
      t = np.linspace(0, t1, 5)
      assert_raises(ValueError, waveforms.chirp, t, 0, t1, 1, method)
      assert_raises(ValueError, waveforms.chirp, t, 1, t1, 0, method)
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_equal, assert_, assert_allclose, assert_array_equal
  from pytest import raises
  import scipy.signal._waveforms
label_desc: Use image node_id 14 for calling the TestChirp obj's underlying member method code with example usage: obj.test_hyperbolic_zero_freq() without return types