code: def test_cwt_ricker(self, xp, scp):
      len_data = 100
      test_data = xp.sin(xp.pi * xp.arange(0, len_data) / 10.0)
      # Check proper shape on output
      widths = [1, 3, 4, 5, 10]
      return scp.signal.cwt(test_data, scp.signal.ricker, widths)
  
file_path: cupy/tests/cupyx_tests/scipy_tests/signal_tests/test_wavelets.py
imports: import pytest
  from cupy import testing
  import cupyx.scipy.signal
label_desc: Use image node_id 13 for calling the TestWavelets obj's underlying member method code with example usage: obj.test_cwt_ricker(xp, scp) and returns: scp