code: def test_string_hash(stringstore):
      """Test that string hashing is stable across platforms"""
      assert stringstore.add("apple") == 8566208034543834098
      heart = "\U0001f499"
      h = stringstore.add(heart)
      assert h == 11841826740069053588
  
file_path: spaCy/spacy/tests/vocab_vectors/test_stringstore.py
imports: import pytest
  from spacy.strings import StringStore
label_desc: Use image node_id 2 for calling a global function with example usage: test_string_hash(stringstore) without return types