code: def test_numpy():
      assert validate("2 * int32", np.array([1, 2], dtype="int32"))
  
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 7 for calling a global function with example usage: test_numpy() without return types