code: def test_not_in_text_single_long(self):
      text = "head " * 50 + "foo " + "tail " * 20
      assert "foo" not in text
  
imports: import pytest
  from pytest import raises
label_desc: Use image node_id 14 for calling the TestSpecialisedExplanations obj's underlying member method code with example usage: obj.test_not_in_text_single_long() without return types