@Test
public void getCardTypeTest_whenMasterCard() {

    Assert.assertEquals(Utils.CARD_TYPE_MASTERCARD, Utils.getCardType("5111"));
    Assert.assertEquals(Utils.CARD_TYPE_MASTERCARD, Utils.getCardType("5211"));
    Assert.assertEquals(Utils.CARD_TYPE_MASTERCARD, Utils.getCardType("5311"));
    Assert.assertEquals(Utils.CARD_TYPE_MASTERCARD, Utils.getCardType("5411"));
    Assert.assertEquals(Utils.CARD_TYPE_MASTERCARD, Utils.getCardType("5511"));
}