text: import pytest
  import fsspec
  
  pytest.importorskip("distributed")
  
  
  @pytest.fixture()
  def cli(tmpdir):
      import dask.distributed
  
      client = dask.distributed.Client(n_workers=1)
  
      def setup():
          m = fsspec.filesystem("memory")
          with m.open("afile", "wb") as f:
              f.write(b"data")
  
      client.run(setup)
      try:
          yield client
      finally:
          client.close()
  
  
  def test_basic(cli):
  
      fs = fsspec.filesystem("dask", target_protocol="memory")
      assert fs.ls("") == ["afile"]
      assert fs.cat("afile") == b"data"
  