code: def test_scan_boolean_cumsum():
      s = cudf.Series([0, -1, -300, 23, 4, -3, 0, 0, 100])
  
      # cumsum test
      got = (s > 0).cumsum()
      expect = (s > 0).to_pandas().cumsum()
  
      assert_eq(expect, got)
  
imports: from itertools import product
  import numpy
  import pandas
  import pytest
  import cudf
  from cudf.core.dtypes import Decimal32Dtype, Decimal64Dtype, Decimal128Dtype
  from cudf.testing._utils import INTEGER_TYPES, NUMERIC_TYPES, assert_eq, gen_rand
label_desc: Use image node_id 13 for calling a global function with example usage: test_scan_boolean_cumsum() without return types