code: def test_cat(args):
      msg = "Invalid frequency"
  
      with pytest.raises(ValueError, match=msg):
          to_offset(str(args[0]) + args[1])
  
imports: import numpy
  import pytest
  from pandas._libs.tslibs import Period, to_offset
label_desc: Use image node_id 3 for calling a global function with example usage: test_cat(args) without return types