test_round = ->
  run_test [
    "round(a)",
    "round(a)",

    "round(a+b)",
    "round(a+b)",

    "round(5/2)",
    "3",

    "round(5/2 - 1/10)",
    "2",

    "round(4/2)",
    "2",

    "round(3/2)",
    "2",

    "round(2/2)",
    "1",

    "round(1/2)",
    "1",

    "round(0/2)",
    "0",

    "round(-1/2)",
    "0",

    "round(-2/2)",
    "-1",

    "round(-3/2)",
    "-1",

    "round(-4/2)",
    "-2",

    "round(-5/2)",
    "-2",

    "round(-5/2 + 1/10)",
    "-2",

    "round(5/2) - round(5/2.0)",
    "0.0",

    "round(4/2) - round(4/2.0)",
    "0.0",

    "round(3/2) - round(3/2.0)",
    "0.0",

    "round(2/2) - round(2/2.0)",
    "0.0",

    "round(1/2) - round(1/2.0)",
    "0.0",

    "round(0.0)",
    "0.0",

    "round(-1/2) - round(-1/2.0)",
    "0.0",

    "round(-2/2) - round(-2/2.0)",
    "0.0",

    "round(-3/2) - round(-3/2.0)",
    "0.0",

    "round(-4/2) - round(-4/2.0)",
    "0.0",

    "round(-5/2) - round(-5/2.0)",
    "0.0",
  ]