@Test
public void setMultiplierNegative() {
Product product = new Product("test", "Test Product", owner);
product.setMultiplier(-15L);
assertEquals(Long.valueOf(1), product.getMultiplier());
}
@Test
public void setMultiplierBasic() {
Product product = new Product("test", "Test Product", owner);
product.setMultiplier(4L);
assertEquals(Long.valueOf(4), product.getMultiplier());
}