@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 shouldFailOnLessOctets() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Invalid IPv4 address: 10.1.1");
Ipv4.parse("10.1.1");
}
@Test
public void shouldParseIPv4AddressWithLeadingAndTrailingSpaces() {
assertEquals("127.0.8.12", Ipv4.parse(" 127.0.8.12 ").toString());
}
@Test
public void shouldParseDottedDecimalNotation() {
assertEquals("127.0.8.23", Ipv4.parse("127.0.8.23").toString());
assertEquals("193.168.15.255", Ipv4.parse("193.168.15.255").toString());
}
@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);
}
@Test
public void shouldFailToCalculateUpperBoundWhenPrefixIsOutOfRange() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Value [33] out of range: [0..32]");
Ipv4.parse("192.168.0.100").upperBoundForPrefix(33);
}
@Test
public void shouldCalculateBoundsGivenAnAddressAndAPrefix() {
Ipv4 address = Ipv4.parse("192.168.0.100");
assertEquals(Ipv4.parse("0.0.0.0"), address.lowerBoundForPrefix(0));
assertEquals(Ipv4.parse("255.255.255.255"), address.upperBoundForPrefix(0));
assertEquals(Ipv4.parse("192.168.0.0"), address.lowerBoundForPrefix(16));
assertEquals(Ipv4.parse("192.168.255.255"), address.upperBoundForPrefix(16));
assertEquals(Ipv4.parse("192.168.0.100"), address.lowerBoundForPrefix(32));
assertEquals(Ipv4.parse("192.168.0.100"), address.upperBoundForPrefix(32));
}
@Test
public void shouldFailOnOutOfBoundsByte_NegativeByte() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Invalid IPv4 address: 13.-40.0.0");
Ipv4.parse("13.-40.0.0");
}
@Test
public void shouldFailOnOutOfBoundsByte() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Value [256] out of range: [0..255]");
Ipv4.parse("256.0.0.0");
}
@Test
public void shouldFailWhenOctetContainsNonDigit() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Invalid IPv4 address: 10.a.1.0");
Ipv4.parse("10.a.1.0");
}
@Test
public void shouldFailWhenStartingWithNonDigit() {
thrown.expect(IllegalArgumentException.class);
thrown.expectMessage("Invalid IPv4 address: .10.1.1.1");
Ipv4.parse(".10.1.1.1");
}
