code: def test_check_crs():
      pytest.importorskip("pyproj")
      p = check_crs("epsg:26915 +units=m")
      assert (
          p.srs == "+proj=utm +zone=15 +datum=NAD83 +units=m +no_defs"
      )
      p = check_crs("wrong")
      assert p is None
  
imports: import numpy
  import pandas
  import pytest
  from unittest import TestCase, SkipTest
  from hvplot.util import check_crs, is_list_like, process_crs, process_xarray, _convert_col_names_to_str, instantiate_crs_str
label_desc: Use image node_id 1 for calling a global function with example usage: test_check_crs() without return types