old_contents: import pickle
  import pytest
  import numpy as np
  
  from astropy.coordinates import Longitude
  from astropy import coordinates as coord
  from astropy.tests.helper import pickle_protocol, check_pickling_recovery  # noqa
  
  # Can't test distances without scipy due to cosmology deps
  from astropy.utils.compat.optional_deps import HAS_SCIPY  # noqa
  
  
  def test_basic():
      lon1 = Longitude(1.23, "radian", wrap_angle='180d')
      s = pickle.dumps(lon1)
      lon2 = pickle.loads(s)
  
  
  def test_pickle_longitude_wrap_angle():
      a = Longitude(1.23, "radian", wrap_angle='180d')
      s = pickle.dumps(a)
      b = pickle.loads(s)
  
      assert a.rad == b.rad
      assert a.wrap_angle == b.wrap_angle
  
  
  _names = [coord.Angle,
            coord.Distance,
            coord.DynamicMatrixTransform,
            coord.ICRS,
            coord.Latitude,
            coord.Longitude,
            coord.StaticMatrixTransform,
            ]
  
  _xfail = [False,
            not HAS_SCIPY,
            True,
            True,
            False,
            True,
            False]
  
  _args = [[0.0],
           [],
           [lambda *args: np.identity(3), coord.ICRS, coord.ICRS],
           [0, 0],
           [0],
           [0],
           [np.identity(3), coord.ICRS, coord.ICRS],
           ]
  
  _kwargs = [{'unit': 'radian'},
             {'z': 0.23},
             {},
             {'unit': ['radian', 'radian']},
             {'unit': 'radian'},
             {'unit': 'radian'},
             {},
             ]
  
  
  @pytest.mark.parametrize(("name", "args", "kwargs", "xfail"),
                           tuple(zip(_names, _args, _kwargs, _xfail)))
  def test_simple_object(pickle_protocol, name, args, kwargs, xfail):
      # Tests easily instantiated objects
      if xfail:
          pytest.xfail()
      original = name(*args, **kwargs)
      check_pickling_recovery(original, pickle_protocol)
  
new_contents: import pickle
  import pytest
  import numpy as np
  
  import astropy.units as u
  from astropy.coordinates import Longitude
  from astropy import coordinates as coord
  from astropy.tests.helper import pickle_protocol, check_pickling_recovery  # noqa
  
  # Can't test distances without scipy due to cosmology deps
  from astropy.utils.compat.optional_deps import HAS_SCIPY  # noqa
  
  
  def test_basic():
      lon1 = Longitude(1.23, "radian", wrap_angle='180d')
      s = pickle.dumps(lon1)
      lon2 = pickle.loads(s)
  
  
  def test_pickle_longitude_wrap_angle():
      a = Longitude(1.23, "radian", wrap_angle='180d')
      s = pickle.dumps(a)
      b = pickle.loads(s)
  
      assert a.rad == b.rad
      assert a.wrap_angle == b.wrap_angle
  
  
  _names = [coord.Angle,
            coord.Distance,
            coord.DynamicMatrixTransform,
            coord.ICRS,
            coord.Latitude,
            coord.Longitude,
            coord.StaticMatrixTransform,
            ]
  
  _xfail = [False,
            not HAS_SCIPY,
            True,
            True,
            False,
            True,
            False]
  
  _args = [[0.0],
           [],
           [lambda *args: np.identity(3), coord.ICRS, coord.ICRS],
           [0, 0],
           [0],
           [0],
           [np.identity(3), coord.ICRS, coord.ICRS],
           ]
  
  _kwargs = [{'unit': 'radian'},
             {'z': 0.23},
             {},
             {'unit': ['radian', 'radian']},
             {'unit': 'radian'},
             {'unit': 'radian'},
             {},
             ]
  
  
  @pytest.mark.parametrize(("name", "args", "kwargs", "xfail"),
                           tuple(zip(_names, _args, _kwargs, _xfail)))
  def test_simple_object(pickle_protocol, name, args, kwargs, xfail):
      # Tests easily instantiated objects
      if xfail:
          pytest.xfail()
      original = name(*args, **kwargs)
      check_pickling_recovery(original, pickle_protocol)
  
  
  def test_skyoffset_pickle(pickle_protocol):
      """
      This is a regression test for issue #9249:
      https://github.com/astropy/astropy/issues/9249
      """
      frame = coord.SkyOffsetFrame(origin=coord.ICRS(0*u.deg, 0*u.deg))
      check_pickling_recovery(frame, pickle_protocol)
  
      frame = coord.SkyOffsetFrame(origin=coord.Galactic(0*u.deg, 0*u.deg))
      check_pickling_recovery(frame, pickle_protocol)
  
subject: add a regression test for skyoffset pickling