import { calculateDamage } from './combat-damage';

describe('calculateDamage', () => {
  it('applies the established armor mitigation formula', () => {
    // raw = 12 + 15 = 27; 27 * 60 / (60 + 20) = 20.25 -> rounds to 20
    expect(calculateDamage({ attack: 12, weaponDamage: 15 }, 20)).toBe(20);
  });

  it('never returns less than 1 damage, even against extreme armor', () => {
    expect(calculateDamage({ attack: 1, weaponDamage: 0 }, 100_000)).toBe(1);
  });

  it('treats an attacker with no weaponDamage as having attack alone as its raw damage', () => {
    // raw = 9; 9 * 60 / (60 + 5) = 8.307... -> rounds to 8
    expect(calculateDamage({ attack: 9 }, 5)).toBe(8);
  });

  it('applies a damage multiplier before the minimum-1 floor', () => {
    // raw = 27; mitigated = 20.25; *1.6 = 32.4 -> rounds to 32
    expect(calculateDamage({ attack: 12, weaponDamage: 15 }, 20, 1.6)).toBe(32);
  });

  it('still floors at 1 damage even with a small multiplier', () => {
    expect(calculateDamage({ attack: 1, weaponDamage: 0 }, 100_000, 0.5)).toBe(
      1,
    );
  });
});