old_contents: 
  from metakernel.tests.utils import (get_kernel, get_log_text, 
                                      clear_log_text, EvalKernel)
  import os
  
  def test_jigsaw_magic():
      kernel = get_kernel(EvalKernel)
      kernel.do_execute("%jigsaw Processing")
      text = get_log_text(kernel)
      assert os.path.isfile("Processing.html"), "File does not exist: Processing.html"
  
  def teardown():
      for fname in ['Processing.html']:
          try:
              os.remove(fname)
          except:
              pass
  
new_contents: 
  from metakernel.tests.utils import (get_kernel, get_log_text, 
                                      clear_log_text, EvalKernel)
  import os
  
  def test_jigsaw_magic():
      kernel = get_kernel(EvalKernel)
      kernel.do_execute("%jigsaw Processing --workspace workspace1")
      text = get_log_text(kernel)
      assert os.path.isfile("workspace1.html"), "File does not exist: workspace1.html"
  
  def teardown():
      for fname in ['workspace1.html']:
          try:
              os.remove(fname)
          except:
              pass
  
subject: Fix Jigsaw magic test