old_contents: import matplotlib
  from matplotlib import pyplot as plt
  
  from ..utils.decorators import wraps
  
  MPL_VERSION = matplotlib.__version__
  
  ROOT = "http://{server}/testing/astropy/2018-02-01T23:31:45.013149/{mpl_version}/"
  
  IMAGE_REFERENCE_DIR = ROOT.format(server='data.astropy.org', mpl_version=MPL_VERSION[:3] + '.x')
  
  
  def ignore_matplotlibrc(func):
      # This is a decorator for tests that use matplotlib but not pytest-mpl
      # (which already handles rcParams)
      @wraps(func)
      def wrapper(*args, **kwargs):
          with plt.style.context({}, after_reset=True):
              return func(*args, **kwargs)
      return wrapper
  
new_contents: import matplotlib
  from matplotlib import pyplot as plt
  
  from ..utils.decorators import wraps
  
  MPL_VERSION = matplotlib.__version__
  
  ROOT = "http://{server}/testing/astropy/2018-02-01T23:31:45.013149/{mpl_version}/"
  
  IMAGE_REFERENCE_DIR = (ROOT.format(server='data.astropy.org', mpl_version=MPL_VERSION[:3] + '.x') + ',' +
                         ROOT.format(server='www.astropy.org/astropy-data', mpl_version=MPL_VERSION[:3] + '.x'))
  
  
  def ignore_matplotlibrc(func):
      # This is a decorator for tests that use matplotlib but not pytest-mpl
      # (which already handles rcParams)
      @wraps(func)
      def wrapper(*args, **kwargs):
          with plt.style.context({}, after_reset=True):
              return func(*args, **kwargs)
      return wrapper
  
subject: Add back mirror for image tests