require "minitest/autorun"
require "combination"

TEST_COMBINATION = <<END
L68
L30
R48
L5
R60
L55
L1
L99
R14
L82
END

class TestCombination < Minitest::Test
  def test_safe
    safe = Combination::Safe.new
    assert_equal 50, safe.count
    assert_equal 0, safe.zero_clicks
    safe.apply_step Combination::Step.for("L68")
    assert_equal 82, safe.count
    assert_equal 1, safe.zero_clicks
    safe.apply_step Combination::Step.for("L30")
    assert_equal 52, safe.count
    assert_equal 1, safe.zero_clicks
    safe.apply_step Combination::Step.for("R48")
    assert_equal 0, safe.count
    assert_equal 2, safe.zero_clicks
    safe.apply_step Combination::Step.for("R300")
    assert_equal 0, safe.count
    assert_equal 5, safe.zero_clicks
    safe.apply_step Combination::Step.for("L602")
    assert_equal 98, safe.count
    assert_equal 11, safe.zero_clicks

    0.upto(99) do |count|
      safe = Combination::Safe.new
      safe.apply_step Combination::Step.for("L50")
      safe.apply_step Combination::Step.new("R", count)
      assert_equal count, safe.count
      assert_equal 1, safe.zero_clicks
    end
  end

  def test_zero_count
    combination = Combination.for TEST_COMBINATION
    assert_equal 3, combination.zero_count
  end

  def test_zero_clicks
    combination = Combination.for TEST_COMBINATION
    assert_equal 6, combination.zero_click_count

    combination = Combination.for "R1000"
    assert_equal 10, combination.zero_click_count
  end
end