@Test
public void convertV6Test() {

    boolean result = BigInteger.ZERO.equals(NeutronSubnetIpAllocationPool.convertV6(null));
    Assert.assertTrue("Convert V6 Test 1: null Argument failed", result);
    result = new BigInteger("42550872755692912415807417417958686721")
            .equals(NeutronSubnetIpAllocationPool.convertV6("2003:0:0:0:0:0:0:1"));
    Assert.assertTrue("Convert V6 Test 2: 2003:0:0:0:0:0:0:1 Argument failed", result);
}