@Test
public void testMixingTwoLiquidsDifferentAmounts() {

    LinkedList<Liquid> liquids = new LinkedList<>();
    liquids.add(new Liquid(300, 340, new Color(0x880000)));
    liquids.add(new Liquid(100, 300, new Color(0x440000)));
    Liquid result = new SubtractiveMixingStrategy().mixLiquids(liquids);
    assertEquals(new Liquid(400, 330, new Color(0x770000)), result);
}