code: def test_get_compression_map():
      expected_compression_fn_map = {
          None: {
              "open": open,
              "extension": "",
          },
          "gzip": {
              "open": compression_utils._gzip_open,
              "extension": "gz",
          },
          "bz2": {
              "open": compression_utils._bz2_open,
              "extension": "bz2",
          },
          "lzma": {
              "open": compression_utils._lzma_open,
              "extension": "lzma",
          },
      }
      assert (
          compression_utils.get_compression_map()
          == expected_compression_fn_map
      )
  
imports: from autogluon.common.utils import compression_utils
label_desc: Use image node_id 3 for calling a global function with example usage: test_get_compression_map() without return types