docstr: Test degenerate pass_zero cases.
docstr_tok: ["Test","degenerate","pass_zero","cases","."]
code: def test_bad_pass_zero(self):
      """Test degenerate pass_zero cases."""
      with assert_raises(ValueError, match="pass_zero must be"):
          signal.firwin(41, 0.5, pass_zero="foo")
      with assert_raises(TypeError):
          signal.firwin(41, 0.5, pass_zero=1.0)
      for pass_zero in ("lowpass", "highpass"):
          with assert_raises(ValueError, match="cutoff must have one"):
              signal.firwin(41, [0.5, 0.6], pass_zero=pass_zero)
      for pass_zero in ("bandpass", "bandstop"):
          with assert_raises(
              ValueError, match="must have at least two"
          ):
              signal.firwin(41, [0.5], pass_zero=pass_zero)
  
imports: import cupy
  import cupyx.scipy.signal
  from cupy import testing
  import pytest
  from pytest import raises
label_desc: Use image node_id 9 for calling the TestFirwin obj's underlying member method code with example usage: obj.test_bad_pass_zero() without return types