code: def test_integration():
      assert validate(
          "{name: string, arrived: date}",
          {"name": "Alice", "arrived": date(2012, 1, 5)},
      )
  
file_path: datashader/datashader/datashape/tests/test_user.py
imports: import pytest
  from datashader.datashape.user import issubschema, validate
  from datashader.datashape import dshape
  from datetime import date, time, datetime
  import numpy
label_desc: Use image node_id 9 for calling a global function with example usage: test_integration() without return types