@Test
public void testTakeOut() {

    Liquid content = new Liquid(100, 350, new Color(0x421337));
    TankSimulation tank = new TankSimulation(1000,
            TankSelector.valuesWithoutMix()[0], content, pipe1, pipe2);
    Liquid out = tank.takeOut(33);
    assertEquals(new Liquid(33, 350, new Color(0x421337)), out);
    out = tank.takeOut(500);
    assertEquals(new Liquid(67, 350, new Color(0x421337)), out);
}