Serially apply all patches to a document.

def apply_patches(document, patches):
  """Serially apply all patches to a document."""
  for i, patch in enumerate(patches):
    try:
      result = apply_patch(document, patch)
      if patch.op == "test" and result is False:
        raise JSONPatchError("Test patch {0} failed. Cancelling entire set.".format(i + 1))
    except Exception as ex:
      raise JSONPatchError("An error occurred with patch {0}: {1}".format(i + 1, ex)) from ex