| /* |
| * Copyright 2014 Open Networking Laboratory |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.onlab.packet; |
| |
| import org.junit.Test; |
| |
| import static org.hamcrest.Matchers.is; |
| import static org.hamcrest.Matchers.not; |
| import static org.junit.Assert.assertThat; |
| import static org.junit.Assert.assertTrue; |
| import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable; |
| |
| /** |
| * Tests for class {@link Ip4Address}. |
| */ |
| public class Ip4AddressTest { |
| /** |
| * Tests the immutability of {@link Ip4Address}. |
| */ |
| @Test |
| public void testImmutable() { |
| assertThatClassIsImmutable(Ip4Address.class); |
| } |
| |
| /** |
| * Tests the length of the address in bytes (octets). |
| */ |
| @Test |
| public void testAddrBytelen() { |
| assertThat(Ip4Address.BYTE_LENGTH, is(4)); |
| } |
| |
| /** |
| * Tests the length of the address in bits. |
| */ |
| @Test |
| public void testAddrBitlen() { |
| assertThat(Ip4Address.BIT_LENGTH, is(32)); |
| } |
| |
| /** |
| * Tests default class constructor. |
| */ |
| @Test |
| public void testDefaultConstructor() { |
| Ip4Address ip4Address = new Ip4Address(); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| } |
| |
| /** |
| * Tests valid class copy constructor. |
| */ |
| @Test |
| public void testCopyConstructor() { |
| Ip4Address fromAddr = new Ip4Address("1.2.3.4"); |
| Ip4Address ip4Address = new Ip4Address(fromAddr); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| fromAddr = new Ip4Address("0.0.0.0"); |
| ip4Address = new Ip4Address(fromAddr); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| fromAddr = new Ip4Address("255.255.255.255"); |
| ip4Address = new Ip4Address(fromAddr); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests invalid class copy constructor for a null object to copy from. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testInvalidConstructorNullObject() { |
| Ip4Address fromAddr = null; |
| Ip4Address ip4Address = new Ip4Address(fromAddr); |
| } |
| |
| /** |
| * Tests valid class constructor for an integer value. |
| */ |
| @Test |
| public void testConstructorForInteger() { |
| Ip4Address ip4Address = new Ip4Address(0x01020304); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| ip4Address = new Ip4Address(0); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| ip4Address = new Ip4Address(0xffffffff); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests valid class constructor for an array value. |
| */ |
| @Test |
| public void testConstructorForArray() { |
| final byte[] value1 = new byte[] {1, 2, 3, 4}; |
| Ip4Address ip4Address = new Ip4Address(value1); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| final byte[] value2 = new byte[] {0, 0, 0, 0}; |
| ip4Address = new Ip4Address(value2); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| final byte[] value3 = new byte[] {(byte) 0xff, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff}; |
| ip4Address = new Ip4Address(value3); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests valid class constructor for an array value and an offset. |
| */ |
| @Test |
| public void testConstructorForArrayAndOffset() { |
| final byte[] value1 = new byte[] {11, 22, 33, // Preamble |
| 1, 2, 3, 4, |
| 44, 55}; // Extra bytes |
| Ip4Address ip4Address = new Ip4Address(value1, 3); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| final byte[] value2 = new byte[] {11, 22, // Preamble |
| 0, 0, 0, 0, |
| 33}; // Extra bytes |
| ip4Address = new Ip4Address(value2, 2); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| final byte[] value3 = new byte[] {11, 22, // Preamble |
| (byte) 0xff, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff, |
| 33}; // Extra bytes |
| ip4Address = new Ip4Address(value3, 2); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests invalid class constructor for a null array. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testInvalidConstructorNullArray() { |
| final byte[] fromArray = null; |
| Ip4Address ip4Address = new Ip4Address(fromArray); |
| } |
| |
| /** |
| * Tests invalid class constructor for an array that is too short. |
| */ |
| @Test(expected = IllegalArgumentException.class) |
| public void testInvalidConstructorShortArray() { |
| final byte[] fromArray = new byte[] {1, 2, 3}; |
| Ip4Address ip4Address = new Ip4Address(fromArray); |
| } |
| |
| /** |
| * Tests invalid class constructor for an array and an invalid offset. |
| */ |
| @Test(expected = IllegalArgumentException.class) |
| public void testInvalidConstructorArrayInvalidOffset() { |
| final byte[] value1 = new byte[] {11, 22, 33, // Preamble |
| 1, 2, 3, 4, |
| 44, 55}; // Extra bytes |
| Ip4Address ip4Address = new Ip4Address(value1, 6); |
| } |
| |
| /** |
| * Tests valid class constructor for a string. |
| */ |
| @Test |
| public void testConstructorForString() { |
| Ip4Address ip4Address = new Ip4Address("1.2.3.4"); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| ip4Address = new Ip4Address("0.0.0.0"); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| ip4Address = new Ip4Address("255.255.255.255"); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests invalid class constructor for a null string. |
| */ |
| @Test(expected = NullPointerException.class) |
| public void testInvalidConstructorNullString() { |
| String fromString = null; |
| Ip4Address ip4Address = new Ip4Address(fromString); |
| } |
| |
| /** |
| * Tests invalid class constructor for an empty string. |
| */ |
| @Test(expected = IllegalArgumentException.class) |
| public void testInvalidConstructors() { |
| // Check constructor for invalid ID: empty string |
| Ip4Address ip4Address = new Ip4Address(""); |
| } |
| |
| /** |
| * Tests returning the address as a byte array. |
| */ |
| @Test |
| public void testAddressToOctets() { |
| final byte[] value1 = new byte[] {1, 2, 3, 4}; |
| Ip4Address ip4Address = new Ip4Address("1.2.3.4"); |
| assertThat(ip4Address.toOctets(), is(value1)); |
| |
| final byte[] value2 = new byte[] {0, 0, 0, 0}; |
| ip4Address = new Ip4Address("0.0.0.0"); |
| assertThat(ip4Address.toOctets(), is(value2)); |
| |
| final byte[] value3 = new byte[] {(byte) 0xff, (byte) 0xff, |
| (byte) 0xff, (byte) 0xff}; |
| ip4Address = new Ip4Address("255.255.255.255"); |
| assertThat(ip4Address.toOctets(), is(value3)); |
| } |
| |
| /** |
| * Tests making a mask prefix for a given prefix length. |
| */ |
| @Test |
| public void testMakeMaskPrefix() { |
| Ip4Address ip4Address = Ip4Address.makeMaskPrefix(25); |
| assertThat(ip4Address.toString(), is("255.255.255.128")); |
| |
| ip4Address = Ip4Address.makeMaskPrefix(0); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| ip4Address = Ip4Address.makeMaskPrefix(32); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| |
| /** |
| * Tests making of a masked address. |
| */ |
| @Test |
| public void testMakeMaskedAddress() { |
| Ip4Address ip4Address = new Ip4Address("1.2.3.5"); |
| Ip4Address ip4AddressMasked = |
| Ip4Address.makeMaskedAddress(ip4Address, 24); |
| assertThat(ip4AddressMasked.toString(), is("1.2.3.0")); |
| |
| ip4AddressMasked = Ip4Address.makeMaskedAddress(ip4Address, 0); |
| assertThat(ip4AddressMasked.toString(), is("0.0.0.0")); |
| |
| ip4AddressMasked = Ip4Address.makeMaskedAddress(ip4Address, 32); |
| assertThat(ip4AddressMasked.toString(), is("1.2.3.5")); |
| } |
| |
| /** |
| * Tests getting the value of an address. |
| */ |
| @Test |
| public void testGetValue() { |
| Ip4Address ip4Address = new Ip4Address("1.2.3.4"); |
| assertThat(ip4Address.getValue(), is(0x01020304)); |
| |
| ip4Address = new Ip4Address("0.0.0.0"); |
| assertThat(ip4Address.getValue(), is(0)); |
| |
| ip4Address = new Ip4Address("255.255.255.255"); |
| assertThat(ip4Address.getValue(), is(-1)); |
| } |
| |
| /** |
| * Tests equality of {@link Ip4Address}. |
| */ |
| @Test |
| public void testEquality() { |
| Ip4Address addr1 = new Ip4Address("1.2.3.4"); |
| Ip4Address addr2 = new Ip4Address("1.2.3.4"); |
| assertThat(addr1, is(addr2)); |
| |
| addr1 = new Ip4Address("0.0.0.0"); |
| addr2 = new Ip4Address("0.0.0.0"); |
| assertThat(addr1, is(addr2)); |
| |
| addr1 = new Ip4Address("255.255.255.255"); |
| addr2 = new Ip4Address("255.255.255.255"); |
| assertThat(addr1, is(addr2)); |
| } |
| |
| /** |
| * Tests non-equality of {@link Ip4Address}. |
| */ |
| @Test |
| public void testNonEquality() { |
| Ip4Address addr1 = new Ip4Address("1.2.3.4"); |
| Ip4Address addr2 = new Ip4Address("1.2.3.5"); |
| Ip4Address addr3 = new Ip4Address("0.0.0.0"); |
| Ip4Address addr4 = new Ip4Address("255.255.255.255"); |
| assertThat(addr1, is(not(addr2))); |
| assertThat(addr3, is(not(addr2))); |
| assertThat(addr4, is(not(addr2))); |
| } |
| |
| /** |
| * Tests comparison of {@link Ip4Address}. |
| */ |
| @Test |
| public void testComparison() { |
| Ip4Address addr1 = new Ip4Address("1.2.3.4"); |
| Ip4Address addr2 = new Ip4Address("1.2.3.4"); |
| Ip4Address addr3 = new Ip4Address("1.2.3.3"); |
| Ip4Address addr4 = new Ip4Address("1.2.3.5"); |
| assertTrue(addr1.compareTo(addr2) == 0); |
| assertTrue(addr1.compareTo(addr3) > 0); |
| assertTrue(addr1.compareTo(addr4) < 0); |
| |
| addr1 = new Ip4Address("255.2.3.4"); |
| addr2 = new Ip4Address("255.2.3.4"); |
| addr3 = new Ip4Address("255.2.3.3"); |
| addr4 = new Ip4Address("255.2.3.5"); |
| assertTrue(addr1.compareTo(addr2) == 0); |
| assertTrue(addr1.compareTo(addr3) > 0); |
| assertTrue(addr1.compareTo(addr4) < 0); |
| } |
| |
| /** |
| * Tests object string representation. |
| */ |
| @Test |
| public void testToString() { |
| Ip4Address ip4Address = new Ip4Address("1.2.3.4"); |
| assertThat(ip4Address.toString(), is("1.2.3.4")); |
| |
| ip4Address = new Ip4Address("0.0.0.0"); |
| assertThat(ip4Address.toString(), is("0.0.0.0")); |
| |
| ip4Address = new Ip4Address("255.255.255.255"); |
| assertThat(ip4Address.toString(), is("255.255.255.255")); |
| } |
| } |