code: def test_read_withNoFillValue():
      # For a variable with no fill value, reading data with maskandscale=True
      # should return unmasked data
      fname = pjoin(TEST_DATA_PATH, "example_3_maskedvals.nc")
      with netcdf_file(fname, maskandscale=True) as f:
          vardata = f.variables["var2_noFillval"][:]
          assert_mask_matches(vardata, [False, False, False])
          assert_equal(vardata, [1, 2, 3])
  
imports: import os
  from os.path import join, dirname
  import shutil
  import tempfile
  import warnings
  from io import BytesIO
  from glob import glob
  from contextlib import contextmanager
  import numpy
  from numpy.testing import assert_, assert_allclose, assert_equal, break_cycles, suppress_warnings, IS_PYPY
  from pytest import raises
  from scipy.io import netcdf_file
  from scipy._lib._tmpdirs import in_tempdir
label_desc: Use image node_id 22 for calling a global function with example usage: test_read_withNoFillValue() without return types