code: def test_ignore_downcast_neg_to_unsigned():
      # Cannot cast to an unsigned integer
      # because we have a negative number.
      data = ["-1", 2, 3]
      expected = np.array([-1, 2, 3], dtype=np.int64)
  
      res = to_numeric(data, downcast="unsigned")
      tm.assert_numpy_array_equal(res, expected)
  
imports: import decimal
  import numpy
  from numpy import iinfo
  import pytest
  import pandas.util._test_decorators
  import pandas
  from pandas import ArrowDtype, DataFrame, Index, Series, option_context, to_numeric
  import pandas._testing
label_desc: Use image node_id 36 for calling a global function with example usage: test_ignore_downcast_neg_to_unsigned() without return types