test_strings = ->
  run_test [

    "\"hey\" + \"you\"",
    "\"hey\"+\"you\"",

    "\"hey\" + \"hey\"",
    "2*\"hey\"",

    "\"hey\" / \"hey\"",
    "1",

    "\"hey\" - \"hey\"",
    "0",

    "\"hey\" * \"hey\"",
    "\"hey\"^2",

    "\"aaaaaaaaaa\nbbbbbbbbbb\"",
    "\"aaaaaaaaaa\nbbbbbbbbbb\"",

  ]