Move net unit tests to packages/Connectivity

Move the tests together with packages/Connectivity code, so both can be
moved to packages/modules/Connectivity together.

Also reorganize unit tests in a unit/ directory, as other tests
(integration/, common/ etc.) have been added in tests/net since they
were created. This makes the directory structure consistent.

Test: atest FrameworksNetTests
Bug: 187814163
Ignore-AOSP-First: needs per-branch move for merge conflicts
Change-Id: I254ffd1c08ec058d594b4ea55cbae5505f8497cc
diff --git a/tests/common/java/android/net/LinkAddressTest.java b/tests/common/java/android/net/LinkAddressTest.java
new file mode 100644
index 0000000..2cf3cf9
--- /dev/null
+++ b/tests/common/java/android/net/LinkAddressTest.java
@@ -0,0 +1,518 @@
+/*
+ * Copyright (C) 2013 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 android.net;
+
+import static android.system.OsConstants.IFA_F_DADFAILED;
+import static android.system.OsConstants.IFA_F_DEPRECATED;
+import static android.system.OsConstants.IFA_F_OPTIMISTIC;
+import static android.system.OsConstants.IFA_F_PERMANENT;
+import static android.system.OsConstants.IFA_F_TEMPORARY;
+import static android.system.OsConstants.IFA_F_TENTATIVE;
+import static android.system.OsConstants.RT_SCOPE_HOST;
+import static android.system.OsConstants.RT_SCOPE_LINK;
+import static android.system.OsConstants.RT_SCOPE_SITE;
+import static android.system.OsConstants.RT_SCOPE_UNIVERSE;
+
+import static com.android.testutils.MiscAsserts.assertEqualBothWays;
+import static com.android.testutils.MiscAsserts.assertFieldCountEquals;
+import static com.android.testutils.MiscAsserts.assertNotEqualEitherWay;
+import static com.android.testutils.ParcelUtils.assertParcelingIsLossless;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.os.Build;
+import android.os.SystemClock;
+
+import androidx.test.filters.SmallTest;
+import androidx.test.runner.AndroidJUnit4;
+
+import com.android.testutils.DevSdkIgnoreRule;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreAfter;
+import com.android.testutils.DevSdkIgnoreRule.IgnoreUpTo;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.net.Inet4Address;
+import java.net.Inet6Address;
+import java.net.InetAddress;
+import java.net.InterfaceAddress;
+import java.net.NetworkInterface;
+import java.net.SocketException;
+import java.util.Arrays;
+import java.util.List;
+
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class LinkAddressTest {
+    @Rule
+    public final DevSdkIgnoreRule ignoreRule = new DevSdkIgnoreRule();
+
+    private static final String V4 = "192.0.2.1";
+    private static final String V6 = "2001:db8::1";
+    private static final InetAddress V4_ADDRESS = InetAddresses.parseNumericAddress(V4);
+    private static final InetAddress V6_ADDRESS = InetAddresses.parseNumericAddress(V6);
+
+    @Test
+    public void testConstants() {
+        // RT_SCOPE_UNIVERSE = 0, but all the other constants should be nonzero.
+        assertNotEquals(0, RT_SCOPE_HOST);
+        assertNotEquals(0, RT_SCOPE_LINK);
+        assertNotEquals(0, RT_SCOPE_SITE);
+
+        assertNotEquals(0, IFA_F_DEPRECATED);
+        assertNotEquals(0, IFA_F_PERMANENT);
+        assertNotEquals(0, IFA_F_TENTATIVE);
+    }
+
+    @Test
+    public void testConstructors() throws SocketException {
+        LinkAddress address;
+
+        // Valid addresses work as expected.
+        address = new LinkAddress(V4_ADDRESS, 25);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(25, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+        assertTrue(address.isIpv4());
+
+        address = new LinkAddress(V6_ADDRESS, 127);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(127, address.getPrefixLength());
+        assertEquals(0, address.getFlags());
+        assertEquals(RT_SCOPE_UNIVERSE, address.getScope());
+        assertTrue(address.isIpv6());
+
+        // Nonsensical flags/scopes or combinations thereof are acceptable.
+        address = new LinkAddress(V6 + "/64", IFA_F_DEPRECATED | IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertEquals(V6_ADDRESS, address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(IFA_F_DEPRECATED | IFA_F_PERMANENT, address.getFlags());
+        assertEquals(RT_SCOPE_LINK, address.getScope());
+        assertTrue(address.isIpv6());
+
+        address = new LinkAddress(V4 + "/23", 123, 456);
+        assertEquals(V4_ADDRESS, address.getAddress());
+        assertEquals(23, address.getPrefixLength());
+        assertEquals(123, address.getFlags());
+        assertEquals(456, address.getScope());
+        assertTrue(address.isIpv4());
+
+        address = new LinkAddress("/64", 1 /* flags */, 2 /* scope */);
+        assertEquals(Inet6Address.LOOPBACK, address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(1, address.getFlags());
+        assertEquals(2, address.getScope());
+        assertTrue(address.isIpv6());
+
+        address = new LinkAddress("[2001:db8::123]/64", 3 /* flags */, 4 /* scope */);
+        assertEquals(InetAddresses.parseNumericAddress("2001:db8::123"), address.getAddress());
+        assertEquals(64, address.getPrefixLength());
+        assertEquals(3, address.getFlags());
+        assertEquals(4, address.getScope());
+        assertTrue(address.isIpv6());
+
+        // InterfaceAddress doesn't have a constructor. Fetch some from an interface.
+        List<InterfaceAddress> addrs = NetworkInterface.getByName("lo").getInterfaceAddresses();
+
+        // We expect to find 127.0.0.1/8 and ::1/128, in any order.
+        LinkAddress ipv4Loopback, ipv6Loopback;
+        assertEquals(2, addrs.size());
+        if (addrs.get(0).getAddress() instanceof Inet4Address) {
+            ipv4Loopback = new LinkAddress(addrs.get(0));
+            ipv6Loopback = new LinkAddress(addrs.get(1));
+        } else {
+            ipv4Loopback = new LinkAddress(addrs.get(1));
+            ipv6Loopback = new LinkAddress(addrs.get(0));
+        }
+
+        assertEquals(InetAddresses.parseNumericAddress("127.0.0.1"), ipv4Loopback.getAddress());
+        assertEquals(8, ipv4Loopback.getPrefixLength());
+
+        assertEquals(InetAddresses.parseNumericAddress("::1"), ipv6Loopback.getAddress());
+        assertEquals(128, ipv6Loopback.getPrefixLength());
+
+        // Null addresses are rejected.
+        try {
+            address = new LinkAddress(null, 24);
+            fail("Null InetAddress should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((String) null, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("Null string should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress((InterfaceAddress) null);
+            fail("Null string should cause NullPointerException");
+        } catch(NullPointerException expected) {}
+
+        // Invalid prefix lengths are rejected.
+        try {
+            address = new LinkAddress(V4_ADDRESS, -1);
+            fail("Negative IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, -1);
+            fail("Negative IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4_ADDRESS, 33);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V4 + "/33", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/33 IPv4 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+
+        try {
+            address = new LinkAddress(V6_ADDRESS, 129, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress(V6 + "/129", IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+            fail("/129 IPv6 prefix length should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        // Multicast addresses are rejected.
+        try {
+            address = new LinkAddress("224.0.0.2/32");
+            fail("IPv4 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+
+        try {
+            address = new LinkAddress("ff02::1/128");
+            fail("IPv6 multicast address should cause IllegalArgumentException");
+        } catch(IllegalArgumentException expected) {}
+    }
+
+    @Test
+    public void testAddressScopes() {
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("::/128").getScope());
+        assertEquals(RT_SCOPE_HOST, new LinkAddress("0.0.0.0/32").getScope());
+
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("::1/128").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("127.0.0.5/8").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("fe80::ace:d00d/64").getScope());
+        assertEquals(RT_SCOPE_LINK, new LinkAddress("169.254.5.12/16").getScope());
+
+        assertEquals(RT_SCOPE_SITE, new LinkAddress("fec0::dead/64").getScope());
+
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("10.1.2.3/21").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("192.0.2.1/25").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("2001:db8::/64").getScope());
+        assertEquals(RT_SCOPE_UNIVERSE, new LinkAddress("5000::/127").getScope());
+    }
+
+    private void assertIsSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertTrue(l1 + " unexpectedly does not have same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertTrue(l2 + " unexpectedly does not have same address as " + l1,
+                l2.isSameAddressAs(l1));
+    }
+
+    private void assertIsNotSameAddressAs(LinkAddress l1, LinkAddress l2) {
+        assertFalse(l1 + " unexpectedly has same address as " + l2,
+                l1.isSameAddressAs(l2));
+        assertFalse(l2 + " unexpectedly has same address as " + l1,
+                l1.isSameAddressAs(l2));
+    }
+
+    @Test
+    public void testEqualsAndSameAddressAs() {
+        LinkAddress l1, l2, l3;
+
+        l1 = new LinkAddress("2001:db8::1/64");
+        l2 = new LinkAddress("2001:db8::1/64");
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::1/65");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("2001:db8::2/64");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        l1 = new LinkAddress("192.0.2.1/24");
+        l2 = new LinkAddress("192.0.2.1/24");
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.1/23");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress("192.0.2.2/24");
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+
+        // Check equals() and isSameAddressAs() on identical addresses with different flags.
+        l1 = new LinkAddress(V6_ADDRESS, 64);
+        l2 = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_UNIVERSE);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_UNIVERSE);
+        assertNotEqualEitherWay(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Check equals() and isSameAddressAs() on identical addresses with different scope.
+        l1 = new LinkAddress(V4_ADDRESS, 24);
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_UNIVERSE);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        l2 = new LinkAddress(V4_ADDRESS, 24, 0, RT_SCOPE_HOST);
+        assertNotEqualEitherWay(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+
+        // Addresses with the same start or end bytes aren't equal between families.
+        l1 = new LinkAddress("32.1.13.184/24");
+        l2 = new LinkAddress("2001:db8::1/24");
+        l3 = new LinkAddress("::2001:db8/24");
+
+        byte[] ipv4Bytes = l1.getAddress().getAddress();
+        byte[] l2FirstIPv6Bytes = Arrays.copyOf(l2.getAddress().getAddress(), 4);
+        byte[] l3LastIPv6Bytes = Arrays.copyOfRange(l3.getAddress().getAddress(), 12, 16);
+        assertTrue(Arrays.equals(ipv4Bytes, l2FirstIPv6Bytes));
+        assertTrue(Arrays.equals(ipv4Bytes, l3LastIPv6Bytes));
+
+        assertNotEqualEitherWay(l1, l2);
+        assertIsNotSameAddressAs(l1, l2);
+
+        assertNotEqualEitherWay(l1, l3);
+        assertIsNotSameAddressAs(l1, l3);
+
+        // Because we use InetAddress, an IPv4 address is equal to its IPv4-mapped address.
+        // TODO: Investigate fixing this.
+        String addressString = V4 + "/24";
+        l1 = new LinkAddress(addressString);
+        l2 = new LinkAddress("::ffff:" + addressString);
+        assertEqualBothWays(l1, l2);
+        assertIsSameAddressAs(l1, l2);
+    }
+
+    @Test
+    public void testHashCode() {
+        LinkAddress l1, l2;
+
+        l1 = new LinkAddress(V4_ADDRESS, 23);
+        l2 = new LinkAddress(V4_ADDRESS, 23, 0, RT_SCOPE_HOST);
+        assertNotEquals(l1.hashCode(), l2.hashCode());
+
+        l1 = new LinkAddress(V6_ADDRESS, 128);
+        l2 = new LinkAddress(V6_ADDRESS, 128, IFA_F_TENTATIVE, RT_SCOPE_UNIVERSE);
+        assertNotEquals(l1.hashCode(), l2.hashCode());
+    }
+
+    @Test
+    public void testParceling() {
+        LinkAddress l;
+
+        l = new LinkAddress(V6_ADDRESS, 64, 123, 456);
+        assertParcelingIsLossless(l);
+
+        l = new LinkAddress(V4 + "/28", IFA_F_PERMANENT, RT_SCOPE_LINK);
+        assertParcelingIsLossless(l);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testLifetimeParceling() {
+        final LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 123, 456, 1L, 3600000L);
+        assertParcelingIsLossless(l);
+    }
+
+    @Test @IgnoreAfter(Build.VERSION_CODES.Q)
+    public void testFieldCount_Q() {
+        assertFieldCountEquals(4, LinkAddress.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testFieldCount() {
+        // Make sure any new field is covered by the above parceling tests when changing this number
+        assertFieldCountEquals(6, LinkAddress.class);
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testDeprecationTime() {
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    LinkAddress.LIFETIME_UNKNOWN, 100000L);
+            fail("Only one time provided should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    200000L, 100000L);
+            fail("deprecation time later than expiration time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    -2, 100000L);
+            fail("negative deprecation time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        LinkAddress addr = new LinkAddress(V6_ADDRESS, 64, 0, 456, 100000L, 200000L);
+        assertEquals(100000L, addr.getDeprecationTime());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testExpirationTime() {
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    200000L, LinkAddress.LIFETIME_UNKNOWN);
+            fail("Only one time provided should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        try {
+            new LinkAddress(V6_ADDRESS, 64, 0, 456,
+                    100000L, -2);
+            fail("negative expiration time should cause exception");
+        } catch (IllegalArgumentException expected) { }
+
+        LinkAddress addr = new LinkAddress(V6_ADDRESS, 64, 0, 456, 100000L, 200000L);
+        assertEquals(200000L, addr.getExpirationTime());
+    }
+
+    @Test
+    public void testGetFlags() {
+        LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 123, RT_SCOPE_HOST);
+        assertEquals(123, l.getFlags());
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testGetFlags_Deprecation() {
+        // Test if deprecated bit was added/remove automatically based on the provided deprecation
+        // time
+        LinkAddress l = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_HOST,
+                1L, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the flag is added automatically.
+        assertTrue((l.getFlags() & IFA_F_DEPRECATED) != 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_HOST,
+                SystemClock.elapsedRealtime() + 100000L, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the flag is removed automatically.
+        assertTrue((l.getFlags() & IFA_F_DEPRECATED) == 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED, RT_SCOPE_HOST,
+                LinkAddress.LIFETIME_PERMANENT, LinkAddress.LIFETIME_PERMANENT);
+        // Check if the permanent flag is added.
+        assertTrue((l.getFlags() & IFA_F_PERMANENT) != 0);
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_PERMANENT, RT_SCOPE_HOST,
+                1000L, SystemClock.elapsedRealtime() + 100000L);
+        // Check if the permanent flag is removed
+        assertTrue((l.getFlags() & IFA_F_PERMANENT) == 0);
+    }
+
+    private void assertGlobalPreferred(LinkAddress l, String msg) {
+        assertTrue(msg, l.isGlobalPreferred());
+    }
+
+    private void assertNotGlobalPreferred(LinkAddress l, String msg) {
+        assertFalse(msg, l.isGlobalPreferred());
+    }
+
+    @Test
+    public void testIsGlobalPreferred() {
+        LinkAddress l;
+
+        l = new LinkAddress(V4_ADDRESS, 32, 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v4,global,noflags");
+
+        l = new LinkAddress("10.10.1.7/23", 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v4-rfc1918,global,noflags");
+
+        l = new LinkAddress("10.10.1.7/23", 0, RT_SCOPE_SITE);
+        assertNotGlobalPreferred(l, "v4-rfc1918,site-local,noflags");
+
+        l = new LinkAddress("127.0.0.7/8", 0, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v4-localhost,node-local,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, 0, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_PERMANENT, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,permanent");
+
+        // IPv6 ULAs are not acceptable "global preferred" addresses.
+        l = new LinkAddress("fc12::1/64", 0, RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,ula1,noflags");
+
+        l = new LinkAddress("fd34::1/64", 0, RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,ula2,noflags");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_DADFAILED),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+dadfailed");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_DEPRECATED),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+deprecated");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_SITE);
+        assertNotGlobalPreferred(l, "v6,site-local,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_LINK);
+        assertNotGlobalPreferred(l, "v6,link-local,tempaddr");
+
+        l = new LinkAddress(V6_ADDRESS, 64, IFA_F_TEMPORARY, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v6,node-local,tempaddr");
+
+        l = new LinkAddress("::1/128", IFA_F_PERMANENT, RT_SCOPE_HOST);
+        assertNotGlobalPreferred(l, "v6-localhost,node-local,permanent");
+
+        l = new LinkAddress(V6_ADDRESS, 64, (IFA_F_TEMPORARY|IFA_F_TENTATIVE),
+                            RT_SCOPE_UNIVERSE);
+        assertNotGlobalPreferred(l, "v6,global,tempaddr+tentative");
+
+        l = new LinkAddress(V6_ADDRESS, 64,
+                            (IFA_F_TEMPORARY|IFA_F_TENTATIVE|IFA_F_OPTIMISTIC),
+                            RT_SCOPE_UNIVERSE);
+        assertGlobalPreferred(l, "v6,global,tempaddr+optimistic");
+    }
+
+    @Test @IgnoreUpTo(Build.VERSION_CODES.Q)
+    public void testIsGlobalPreferred_DeprecatedInFuture() {
+        final LinkAddress l = new LinkAddress(V6_ADDRESS, 64, IFA_F_DEPRECATED,
+                RT_SCOPE_UNIVERSE, SystemClock.elapsedRealtime() + 100000,
+                SystemClock.elapsedRealtime() + 200000);
+        // Although the deprecated bit is set, but the deprecation time is in the future, test
+        // if the flag is removed automatically.
+        assertGlobalPreferred(l, "v6,global,tempaddr+deprecated in the future");
+    }
+}