code: def test_not_has_var_dim(ds_neg):
      assert not has_var_dim(ds_neg)
  
file_path: datashader/datashader/datashape/tests/test_util.py
imports: import pytest
  from datashader import datashape
  from datashader.datashape import dshape, has_var_dim, has_ellipsis
label_desc: Use image node_id 4 for calling a global function with example usage: test_not_has_var_dim(ds_neg) without return types