class_docstr: Test Fourier coefficients are properly validated/invalidated.
class_docstr_tok: ["Test","Fourier","coefficients","are","properly","validated\/invalidated","."]
docstr: Check that valid parameters are properly processed.
docstr_tok: ["Check","that","valid","parameters","are","properly","processed","."]
code: def test_valid_fourier_coeffs(
      self, coeffs, n_inputs, can_be_list, expected_coeffs
  ):
      """Check that valid parameters are properly processed."""
      obtained_coeffs = _validate_coefficients(
          coeffs, n_inputs, can_be_list
      )
      assert np.allclose(obtained_coeffs, expected_coeffs)
  
file_path: pennylane/tests/fourier/test_visualize.py
imports: import pytest
  from pennylane import numpy
  from pennylane.fourier.visualize import _validate_coefficients
  from pennylane.fourier.visualize import violin, bar, box, panel, radial_box
label_desc: Use image node_id 1 for calling the TestValidateCoefficients obj's underlying member method code with example usage: obj.test_valid_fourier_coeffs(coeffs, n_inputs, can_be_list, expected_coeffs) without return types