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/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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 com.android.net.module.util;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import android.net.MacAddress;
import androidx.test.runner.AndroidJUnit4;
import org.junit.Test;
import org.junit.runner.RunWith;
@RunWith(AndroidJUnit4.class)
public final class MacAddressUtilsTest {
// Matches WifiInfo.DEFAULT_MAC_ADDRESS
private static final MacAddress DEFAULT_MAC_ADDRESS =
MacAddress.fromString("02:00:00:00:00:00");
@Test
public void testIsMulticastAddress() {
MacAddress[] multicastAddresses = {
// broadcast address
MacAddress.fromString("ff:ff:ff:ff:ff:ff"),
MacAddress.fromString("07:00:d3:56:8a:c4"),
MacAddress.fromString("33:33:aa:bb:cc:dd"),
};
MacAddress[] unicastAddresses = {
// all zero address
MacAddress.fromString("00:00:00:00:00:00"),
MacAddress.fromString("00:01:44:55:66:77"),
MacAddress.fromString("08:00:22:33:44:55"),
MacAddress.fromString("06:00:00:00:00:00"),
};
for (MacAddress mac : multicastAddresses) {
String msg = mac.toString() + " expected to be a multicast address";
assertTrue(msg, MacAddressUtils.isMulticastAddress(mac));
}
for (MacAddress mac : unicastAddresses) {
String msg = mac.toString() + " expected not to be a multicast address";
assertFalse(msg, MacAddressUtils.isMulticastAddress(mac));
}
}
@Test
public void testMacAddressRandomGeneration() {
final int iterations = 1000;
for (int i = 0; i < iterations; i++) {
MacAddress mac = MacAddressUtils.createRandomUnicastAddress();
String stringRepr = mac.toString();
assertTrue(stringRepr + " expected to be a locally assigned address",
mac.isLocallyAssigned());
assertEquals(MacAddress.TYPE_UNICAST, mac.getAddressType());
assertFalse(mac.equals(DEFAULT_MAC_ADDRESS));
}
}
}
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