spacetac/src/core/effects/AttributeLimitEffect.spec.ts

testing("AttributeLimitEffect", test => {
  test.case("applies cumulatively on attribute", check => {
    let battle = new Battle();
    let ship = battle.fleets[0].addShip();
    ship.attributes.evasion.addModifier(12);
    check.equals(ship.getAttribute("evasion"), 12, "initial");

    let effect1 = new AttributeLimitEffect("evasion", 5);
    battle.applyDiffs(effect1.getOnDiffs(ship, ship));
    check.equals(ship.getAttribute("evasion"), 5, "applied 1");

    let effect2 = new AttributeLimitEffect("evasion", 3);
    battle.applyDiffs(effect2.getOnDiffs(ship, ship));
    check.equals(ship.getAttribute("evasion"), 3, "applied 2");

    battle.applyDiffs(effect1.getOffDiffs(ship));
    check.equals(ship.getAttribute("evasion"), 3, "reverted 1");

    battle.applyDiffs(effect2.getOffDiffs(ship));
    check.equals(ship.getAttribute("evasion"), 12, "reverted 2");
  });

  test.case("has a description", check => {
    let effect = new AttributeLimitEffect("power_capacity", 4);
    check.equals(effect.getDescription(), "limit power capacity to 4");
  });
});