@Test
public void testBuilderMethods() {
Ipv4 sample = new Ipv4(1l);
assertEquals(sample, Ipv4.of(BigInteger.ONE));
assertEquals(sample, Ipv4.of(1l));
assertEquals(sample, Ipv4.of("0.0.0.1"));
}
@Test
public void shouldCalculateCommonPrefixLength() {
Ipv4 ipv4 = Ipv4.of("192.168.0.0");
assertEquals(0, ipv4.getCommonPrefixLength(Ipv4.of("0.0.0.0")));
assertEquals(16, ipv4.getCommonPrefixLength(Ipv4.of("192.168.255.255")));
assertEquals(32, ipv4.getCommonPrefixLength(Ipv4.of("192.168.0.0")));
}
@Test
public void testHasPrevious() {
assertFalse(Ipv4.FIRST_IPV4_ADDRESS.hasPrevious());
assertTrue(Ipv4.of("192.168.0.1").hasPrevious());
assertTrue(Ipv4.LAST_IPV4_ADDRESS.hasPrevious());
}
@Test
public void testBuilderWithNull() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("from cannot be null");
Ipv4.of((BigInteger) null);
}
