class_docstr: Checks the full filesystem resolution functionality, exercising each URL interpretation case.
code: def test_get_filesystem_and_path_or_paths(self):
      fs1, path1 = get_filesystem_and_path_or_paths("file:///some/path")
      assert isinstance(fs1, LocalFileSystem) and path1 == "/some/path"
  
      fs2, paths2 = get_filesystem_and_path_or_paths(
          [
              "file:///some/path/01.parquet",
              "file:///some/path/02.parquet",
          ]
      )
      assert isinstance(fs2, LocalFileSystem) and paths2 == [
          "/some/path/01.parquet",
          "/some/path/02.parquet",
      ]
  
      with self.assertRaises(ValueError):
          get_filesystem_and_path_or_paths(
              [
                  "file:///some/path/01.parquet",
                  "hdfs:///some/path/02.parquet",
              ]
          )
  
imports: import unittest
  import dill
  from pyarrow.filesystem import LocalFileSystem
  from pyarrow.lib import ArrowIOError
  from six.moves.urllib.parse import urlparse
  import gcsfs
  import s3fs
  from petastorm.fs_utils import FilesystemResolver, get_filesystem_and_path_or_paths
  from petastorm.hdfs.tests.test_hdfs_namenode import HC, MockHadoopConfiguration, MockHdfs, MockHdfsConnector
label_desc: Use image node_id 12 for calling the FilesystemResolverTest obj's underlying member method code with example usage: obj.test_get_filesystem_and_path_or_paths() without return types