new_contents: from metakernel.tests.utils import get_kernel, EvalKernel, get_log_text
  
  
  def test_restart_magic():
      kernel = get_kernel(EvalKernel)
  
      kernel.do_execute('a=1')
      kernel.do_execute("%restart")
      kernel.do_execute('a')
  
      text = get_log_text(kernel)
      assert 'NameError' in text
  
subject: Add restart magic test