require "test_helper"

class DiceTest < ActiveSupport::TestCase
  test "rolls fomula" do
    result = Dice.roll_formula("4d6+2")

    assert_equal 4, result.rolls.count
    assert_equal 6, result.rolls.first&.sides
  end

  test "rolls single die" do
    result = Dice.roll(10)

    assert_equal 1, result.rolls.count
    assert_equal 10, result.rolls.first&.sides
  end

  test "increases sides below max" do
    original_result = Dice::Result.new
    original_result.add_roll Dice::Roll.new(6, 5)
    original_result.add_roll Dice::Roll.new(6, 6)
    original_result.add_roll Dice::Roll.new(6, 2)

    new_result = original_result.dup

    assert_equal 13, new_result.total
    new_result.increase_sides_below_max(6, 1)
    assert_equal 15, new_result.total

    new_result.rolls.each_with_index do |roll, index|
      assert_equal roll, original_result.rolls[index]
    end
  end
end