import assert from "node:assert/strict";
import test from "node:test";

import { activityLevel, plural } from "../../src/lib/presentation.ts";

test("activity levels share one complete 0-100 scale", () => {
  assert.deepEqual(
    [0, 39, 40, 59, 60, 79, 80, 100].map(score => activityLevel(score).short),
    ["Низкий", "Низкий", "Средний", "Средний", "Высокий", "Высокий", "Очень высокий", "Очень высокий"],
  );
});

test("Russian plural forms cover common and exceptional endings", () => {
  const forms = ["точка", "точки", "точек"] as const;
  assert.deepEqual(
    [0, 1, 2, 5, 11, 21, 22, 25].map(number => plural(number, forms)),
    ["точек", "точка", "точки", "точек", "точек", "точка", "точки", "точек"],
  );
});