code: def test_unsupported_split_length(self):
      with pytest.raises(
          ValueError, match="split_length must be greater than 0."
      ):
          DocumentSplitter(split_length=0)
  
file_path: haystack/test/components/preprocessors/test_document_splitter.py
imports: import pytest
  from haystack import Document
  from haystack.components.preprocessors import DocumentSplitter
label_desc: Use image node_id 5 for calling the TestDocumentSplitter obj's underlying member method code with example usage: obj.test_unsupported_split_length() without return types