docstr: Test behavior of prominence and width calculation if the given window
  length is smaller than a peak's plateau size.
  
  Regression test for gh-9110.
docstr_tok: ["Test","behavior","of","prominence","and","width","calculation","if","the","given","window","length","is","smaller","than","a","peak","'s","plateau","size",".","Regression","test","for","gh-9110","."]
code: def test_wlen_smaller_plateau(self, xp, scp):
      """
      Test behavior of prominence and width calculation if the given window
      length is smaller than a peak's plateau size.
  
      Regression test for gh-9110.
      """
      peaks, props = scp.signal.find_peaks(
          [0, 1, 1, 1, 0],
          prominence=(None, None),
          width=(None, None),
          wlen=2,
      )
      return (peaks,) + tuple(
          [props[k] for k in self.property_keys if k in props]
      )
  
imports: import pytest
  import cupy
  from cupy.cuda import driver
  from cupy.cuda import runtime
  from cupy import testing
  import cupyx.scipy.signal
  import numpy
label_desc: Use image node_id 11 for calling the TestFindPeaks obj's underlying member method code with example usage: obj.test_wlen_smaller_plateau(xp, scp) and returns: unknown