code: def test_de_tokenizer_splits_double_hyphen_infix(de_tokenizer):
      tokens = de_tokenizer(
          "Viele Regeln--wie die Bindestrich-Regeln--sind kompliziert."
      )
      assert len(tokens) == 10
      assert tokens[0].text == "Viele"
      assert tokens[1].text == "Regeln"
      assert tokens[2].text == "--"
      assert tokens[3].text == "wie"
      assert tokens[4].text == "die"
      assert tokens[5].text == "Bindestrich-Regeln"
      assert tokens[6].text == "--"
      assert tokens[7].text == "sind"
      assert tokens[8].text == "kompliziert"
  
file_path: spacy/spacy/tests/lang/de/test_prefix_suffix_infix.py
imports: import pytest
label_desc: Use image node_id 16 for calling a global function with example usage: test_de_tokenizer_splits_double_hyphen_infix(de_tokenizer) without return types