code: def test_concat_axis1(self):
      res = pd.concat([self.gdf, self.df], axis=1)
  
      assert res.shape == (3, 4)
      assert isinstance(res, GeoDataFrame)
      assert isinstance(res.geometry, GeoSeries)
      self._check_metadata(res)
  
file_path: geopandas/geopandas/tests/test_merge.py
imports: import warnings
  import pandas
  import pyproj
  import pytest
  from geopandas._compat import PANDAS_GE_21
  from geopandas.testing import assert_geodataframe_equal
  from pandas.testing import assert_index_equal
  from shapely.geometry import Point
  from geopandas import GeoDataFrame, GeoSeries
label_desc: Use image node_id 8 for calling the TestMerging obj's underlying member method code with example usage: obj.test_concat_axis1() without return types