code: def test_backend_init_error(self):
      def factory():
          raise RuntimeError("I'm not a real backend")
  
      xb.register_backend_factory(
          "error", factory, priority=10, fail_quietly=False
      )
  
      with self.assertRaisesRegex(
          RuntimeError,
          "Unable to initialize backend 'error': I'm not a real backend",
      ):
          xb.get_backend("error")
  
imports: import os
  import platform
  import time
  import warnings
  from absl import logging
  from absl.testing import absltest
  from jax._src import compiler
  from jax._src import config
  from jax._src import test_util
  from jax._src import xla_bridge
  from jax._src.interpreters import xla
  from jax._src.lib import xla_client
label_desc: Use image node_id 10 for calling the GetBackendTest obj's underlying member method code with example usage: obj.test_backend_init_error() without return types