# File test/test_sexp_processor.rb, line 191
  def test_rewrite_not_empty
    insert = s(:rewritable, 1, 2, 2)
    expect = s(:rewritable, 2, 1)
    result = @processor.rewrite(insert)
    assert_equal(expect, result)
    assert_equal(s(2), insert) # post-processing
  end