# File test/test_sexp.rb, line 181
  def test_find_and_replace_all
    @sexp    = s(:a, s(:b, s(:a), s(:b), s(:b, s(:a))))
    expected = s(:a, s(:a, s(:a), s(:a), s(:a, s(:a))))

    @sexp.find_and_replace_all(:b, :a)

    assert_equal(expected, @sexp)
  end