class_docstr: Test that exceptions for ill-formatted inputs are raised.
class_docstr_tok: ["Test","that","exceptions","for","ill-formatted","inputs","are","raised","."]
docstr: Dummy function that returns None.
docstr_tok: ["Dummy","function","that","returns","None","."]
code: def dummy_fn(self, *args, **kwargs):
      """Dummy function that returns None."""
  
imports: from functools import partial
  import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.fourier import coefficients
label_desc: Use image node_id 1 for calling the TestExceptions obj's underlying member method code with example usage: obj.dummy_fn() without return types