code: def test_concat_series_dataframe_input(objs):
      pd_objs = objs
      gd_objs = [gd.from_pandas(obj) for obj in objs]
  
      expected = pd.concat(pd_objs)
      actual = gd.concat(gd_objs)
  
      assert_eq(
          expected.fillna(-1),
          actual.fillna(-1),
          check_dtype=False,
          check_index_type=False,
      )
  
imports: from decimal import Decimal
  import numpy
  import pandas
  import pytest
  import cudf
  from cudf.api.types import is_categorical_dtype
  from cudf.core._compat import PANDAS_GE_150, PANDAS_LT_140
  from cudf.core.dtypes import Decimal32Dtype, Decimal64Dtype, Decimal128Dtype
  from cudf.testing._utils import assert_eq, assert_exceptions_equal
label_desc: Use image node_id 18 for calling a global function with example usage: test_concat_series_dataframe_input(objs) without return types