code: def test_validation_at_least_one():
      with pytest.raises(TypeError, match="At least one"):
          crosstab()
  
file_path: scipy/scipy/stats/tests/test_crosstab.py
imports: import pytest
  import numpy
  from numpy.testing import assert_array_equal, assert_equal
  from scipy.stats.contingency import crosstab
label_desc: Use image node_id 6 for calling a global function with example usage: test_validation_at_least_one() without return types