# File test/test_sexp.rb, line 136
  def test_equals3_full_match
    util_equals3 s(), s()             # 0
    util_equals3 s(:blah), s(:blah)   # 1
    util_equals3 s(:a, :b), s(:a, :b) # 2
    util_equals3 @basic_sexp, @basic_sexp.dup     # deeper structure
  end