Add stable AIDL parcelables for LinkProperties

Test: atest android.net.shared.LinkPropertiesParcelableUtilTest
Bug: b/112869080
Change-Id: I2b69980e25bae9f51fb5b8cd3cafb403e6bd53da

Android.bp

@@ -830,7 +830,12 @@ aidl_interface {
         "core/java/android/net/IIpMemoryStore.aidl",
         "core/java/android/net/INetworkStackConnector.aidl",
         "core/java/android/net/INetworkStackStatusCallback.aidl",
+        "core/java/android/net/IpPrefixParcelable.aidl",
+        "core/java/android/net/LinkAddressParcelable.aidl",
+        "core/java/android/net/LinkPropertiesParcelable.aidl",
         "core/java/android/net/PrivateDnsConfigParcel.aidl",
+        "core/java/android/net/ProxyInfoParcelable.aidl",
+        "core/java/android/net/RouteInfoParcelable.aidl",
         "core/java/android/net/dhcp/DhcpServingParamsParcel.aidl",
         "core/java/android/net/dhcp/IDhcpServer.aidl",
         "core/java/android/net/dhcp/IDhcpServerCallbacks.aidl",

core/java/android/net/IpPrefixParcelable.aidl

@@ -0,0 +1,22 @@
+/*
+ * 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 android.net;
+
+parcelable IpPrefixParcelable {
+    String address;
+    int prefixLength;
+}

core/java/android/net/LinkAddressParcelable.aidl

@@ -0,0 +1,24 @@
+/*
+ * 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 android.net;
+
+parcelable LinkAddressParcelable {
+    String address;
+    int prefixLength;
+    int flags;
+    int scope;
+}

core/java/android/net/LinkPropertiesParcelable.aidl

@@ -0,0 +1,39 @@
+/*
+ * 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 android.net;
+
+import android.net.IpPrefixParcelable;
+import android.net.LinkAddressParcelable;
+import android.net.ProxyInfoParcelable;
+import android.net.RouteInfoParcelable;
+
+parcelable LinkPropertiesParcelable {
+    String ifaceName;
+    LinkAddressParcelable[] linkAddresses;
+    String[] dnses;
+    String[] pcscfs;
+    String[] validatedPrivateDnses;
+    boolean usePrivateDns;
+    String privateDnsServerName;
+    String domains;
+    RouteInfoParcelable[] routes;
+    ProxyInfoParcelable httpProxy;
+    int mtu;
+    String tcpBufferSizes;
+    IpPrefixParcelable nat64Prefix;
+    LinkPropertiesParcelable[] stackedLinks;
+}

core/java/android/net/ProxyInfoParcelable.aidl

@@ -0,0 +1,24 @@
+/*
+ * 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 android.net;
+
+parcelable ProxyInfoParcelable {
+    String host;
+    int port;
+    String[] exclusionList;
+    String pacFileUrl;
+}

core/java/android/net/RouteInfoParcelable.aidl

@@ -0,0 +1,26 @@
+/*
+ * 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 android.net;
+
+import android.net.IpPrefixParcelable;
+
+parcelable RouteInfoParcelable {
+    IpPrefixParcelable destination;
+    String gatewayAddr;
+    String ifaceName;
+    int type;
+}

services/net/java/android/net/shared/LinkPropertiesParcelableUtil.java

@@ -0,0 +1,222 @@
+/*
+ * 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 android.net.shared;
+
+import static android.net.shared.ParcelableUtil.fromParcelableArray;
+import static android.net.shared.ParcelableUtil.toParcelableArray;
+
+import android.annotation.Nullable;
+import android.net.InetAddresses;
+import android.net.IpPrefix;
+import android.net.IpPrefixParcelable;
+import android.net.LinkAddress;
+import android.net.LinkAddressParcelable;
+import android.net.LinkProperties;
+import android.net.LinkPropertiesParcelable;
+import android.net.ProxyInfo;
+import android.net.ProxyInfoParcelable;
+import android.net.RouteInfo;
+import android.net.RouteInfoParcelable;
+import android.net.Uri;
+
+import java.net.InetAddress;
+import java.util.Arrays;
+
+/**
+ * Collection of utility methods to convert to and from stable AIDL parcelables for LinkProperties
+ * and its attributes.
+ * @hide
+ */
+public final class LinkPropertiesParcelableUtil {
+
+    /**
+     * Convert a ProxyInfo to a ProxyInfoParcelable
+     */
+    public static ProxyInfoParcelable toStableParcelable(@Nullable ProxyInfo proxyInfo) {
+        if (proxyInfo == null) {
+            return null;
+        }
+        final ProxyInfoParcelable parcel = new ProxyInfoParcelable();
+        parcel.host = proxyInfo.getHost();
+        parcel.port = proxyInfo.getPort();
+        parcel.exclusionList = proxyInfo.getExclusionList();
+        parcel.pacFileUrl = proxyInfo.getPacFileUrl().toString();
+        return parcel;
+    }
+
+    /**
+     * Convert a ProxyInfoParcelable to a ProxyInfo
+     */
+    public static ProxyInfo fromStableParcelable(@Nullable ProxyInfoParcelable parcel) {
+        if (parcel == null) {
+            return null;
+        }
+        if (Uri.EMPTY.toString().equals(parcel.pacFileUrl)) {
+            return ProxyInfo.buildDirectProxy(
+                    parcel.host, parcel.port, Arrays.asList(parcel.exclusionList));
+        } else {
+            return ProxyInfo.buildPacProxy(Uri.parse(parcel.pacFileUrl));
+        }
+    }
+
+    /**
+     * Convert an IpPrefixParcelable to an IpPrefix
+     */
+    public static IpPrefixParcelable toStableParcelable(@Nullable IpPrefix ipPrefix) {
+        if (ipPrefix == null) {
+            return null;
+        }
+        final IpPrefixParcelable parcel = new IpPrefixParcelable();
+        parcel.address = ipPrefix.getAddress().getHostAddress();
+        parcel.prefixLength = ipPrefix.getPrefixLength();
+        return parcel;
+    }
+
+    /**
+     * Convert an IpPrefix to an IpPrefixParcelable
+     */
+    public static IpPrefix fromStableParcelable(@Nullable IpPrefixParcelable parcel) {
+        if (parcel == null) {
+            return null;
+        }
+        return new IpPrefix(InetAddresses.parseNumericAddress(parcel.address), parcel.prefixLength);
+    }
+
+    /**
+     * Convert a RouteInfoParcelable to a RouteInfo
+     */
+    public static RouteInfoParcelable toStableParcelable(@Nullable RouteInfo routeInfo) {
+        if (routeInfo == null) {
+            return null;
+        }
+        final RouteInfoParcelable parcel = new RouteInfoParcelable();
+        parcel.destination = toStableParcelable(routeInfo.getDestination());
+        parcel.gatewayAddr = routeInfo.getGateway().getHostAddress();
+        parcel.ifaceName = routeInfo.getInterface();
+        parcel.type = routeInfo.getType();
+        return parcel;
+    }
+
+    /**
+     * Convert a RouteInfo to a RouteInfoParcelable
+     */
+    public static RouteInfo fromStableParcelable(@Nullable RouteInfoParcelable parcel) {
+        if (parcel == null) {
+            return null;
+        }
+        final IpPrefix destination = fromStableParcelable(parcel.destination);
+        return new RouteInfo(
+                destination, InetAddresses.parseNumericAddress(parcel.gatewayAddr),
+                parcel.ifaceName, parcel.type);
+    }
+
+    /**
+     * Convert a LinkAddressParcelable to a LinkAddress
+     */
+    public static LinkAddressParcelable toStableParcelable(@Nullable LinkAddress la) {
+        if (la == null) {
+            return null;
+        }
+        final LinkAddressParcelable parcel = new LinkAddressParcelable();
+        parcel.address = la.getAddress().getHostAddress();
+        parcel.prefixLength = la.getPrefixLength();
+        parcel.flags = la.getFlags();
+        parcel.scope = la.getScope();
+        return parcel;
+    }
+
+    /**
+     * Convert a LinkAddress to a LinkAddressParcelable
+     */
+    public static LinkAddress fromStableParcelable(@Nullable LinkAddressParcelable parcel) {
+        if (parcel == null) {
+            return null;
+        }
+        return new LinkAddress(
+                InetAddresses.parseNumericAddress(parcel.address),
+                parcel.prefixLength,
+                parcel.flags,
+                parcel.scope);
+    }
+
+    /**
+     * Convert a LinkProperties to a LinkPropertiesParcelable
+     */
+    public static LinkPropertiesParcelable toStableParcelable(@Nullable LinkProperties lp) {
+        if (lp == null) {
+            return null;
+        }
+        final LinkPropertiesParcelable parcel = new LinkPropertiesParcelable();
+        parcel.ifaceName = lp.getInterfaceName();
+        parcel.linkAddresses = toParcelableArray(
+                lp.getLinkAddresses(),
+                LinkPropertiesParcelableUtil::toStableParcelable,
+                LinkAddressParcelable.class);
+        parcel.dnses = toParcelableArray(
+                lp.getDnsServers(), InetAddress::getHostAddress, String.class);
+        parcel.pcscfs = toParcelableArray(
+                lp.getPcscfServers(), InetAddress::getHostAddress, String.class);
+        parcel.validatedPrivateDnses = toParcelableArray(
+                lp.getValidatedPrivateDnsServers(), InetAddress::getHostAddress, String.class);
+        parcel.usePrivateDns = lp.isPrivateDnsActive();
+        parcel.privateDnsServerName = lp.getPrivateDnsServerName();
+        parcel.domains = lp.getDomains();
+        parcel.routes = toParcelableArray(
+                lp.getRoutes(), LinkPropertiesParcelableUtil::toStableParcelable,
+                RouteInfoParcelable.class);
+        parcel.httpProxy = toStableParcelable(lp.getHttpProxy());
+        parcel.mtu = lp.getMtu();
+        parcel.tcpBufferSizes = lp.getTcpBufferSizes();
+        parcel.nat64Prefix = toStableParcelable(lp.getNat64Prefix());
+        parcel.stackedLinks = toParcelableArray(
+                lp.getStackedLinks(), LinkPropertiesParcelableUtil::toStableParcelable,
+                LinkPropertiesParcelable.class);
+        return parcel;
+    }
+
+    /**
+     * Convert a LinkPropertiesParcelable to a LinkProperties
+     */
+    public static LinkProperties fromStableParcelable(@Nullable LinkPropertiesParcelable parcel) {
+        if (parcel == null) {
+            return null;
+        }
+        final LinkProperties lp = new LinkProperties();
+        lp.setInterfaceName(parcel.ifaceName);
+        lp.setLinkAddresses(fromParcelableArray(parcel.linkAddresses,
+                LinkPropertiesParcelableUtil::fromStableParcelable));
+        lp.setDnsServers(fromParcelableArray(parcel.dnses, InetAddresses::parseNumericAddress));
+        lp.setPcscfServers(fromParcelableArray(parcel.pcscfs, InetAddresses::parseNumericAddress));
+        lp.setValidatedPrivateDnsServers(
+                fromParcelableArray(parcel.validatedPrivateDnses,
+                InetAddresses::parseNumericAddress));
+        lp.setUsePrivateDns(parcel.usePrivateDns);
+        lp.setPrivateDnsServerName(parcel.privateDnsServerName);
+        lp.setDomains(parcel.domains);
+        for (RouteInfoParcelable route : parcel.routes) {
+            lp.addRoute(fromStableParcelable(route));
+        }
+        lp.setHttpProxy(fromStableParcelable(parcel.httpProxy));
+        lp.setMtu(parcel.mtu);
+        lp.setTcpBufferSizes(parcel.tcpBufferSizes);
+        lp.setNat64Prefix(fromStableParcelable(parcel.nat64Prefix));
+        for (LinkPropertiesParcelable stackedLink : parcel.stackedLinks) {
+            lp.addStackedLink(fromStableParcelable(stackedLink));
+        }
+        return lp;
+    }
+}

services/net/java/android/net/shared/ParcelableUtil.java

@@ -0,0 +1,63 @@
+/*
+ * 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 android.net.shared;
+
+import android.annotation.NonNull;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Function;
+
+/**
+ * Utility methods to help convert to/from stable parcelables.
+ * @hide
+ */
+public final class ParcelableUtil {
+    // Below methods could be implemented easily with streams, but streams are frowned upon in
+    // frameworks code.
+
+    /**
+     * Convert a list of BaseType items to an array of ParcelableType items using the specified
+     * converter function.
+     */
+    public static <ParcelableType, BaseType> ParcelableType[] toParcelableArray(
+            @NonNull List<BaseType> base,
+            @NonNull Function<BaseType, ParcelableType> conv,
+            @NonNull Class<ParcelableType> parcelClass) {
+        final ParcelableType[] out = (ParcelableType[]) Array.newInstance(parcelClass, base.size());
+        int i = 0;
+        for (BaseType b : base) {
+            out[i] = conv.apply(b);
+            i++;
+        }
+        return out;
+    }
+
+    /**
+     * Convert an array of ParcelableType items to a list of BaseType items using the specified
+     * converter function.
+     */
+    public static <ParcelableType, BaseType> ArrayList<BaseType> fromParcelableArray(
+            @NonNull ParcelableType[] parceled, @NonNull Function<ParcelableType, BaseType> conv) {
+        final ArrayList<BaseType> out = new ArrayList<>(parceled.length);
+        for (ParcelableType t : parceled) {
+            out.add(conv.apply(t));
+        }
+        return out;
+    }
+}

tests/net/java/android/net/shared/LinkPropertiesParcelableUtilTest.java

@@ -0,0 +1,193 @@
+/*
+ * 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 android.net.shared;
+
+import static android.net.shared.LinkPropertiesParcelableUtil.fromStableParcelable;
+import static android.net.shared.LinkPropertiesParcelableUtil.toStableParcelable;
+
+import static org.junit.Assert.assertEquals;
+
+import android.net.InetAddresses;
+import android.net.IpPrefix;
+import android.net.LinkAddress;
+import android.net.LinkProperties;
+import android.net.ProxyInfo;
+import android.net.RouteInfo;
+import android.net.Uri;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.lang.reflect.Modifier;
+import java.util.Arrays;
+import java.util.Collections;
+
+/**
+ * Tests for {@link LinkPropertiesParcelableUtil}
+ */
+@RunWith(AndroidJUnit4.class)
+@SmallTest
+public class LinkPropertiesParcelableUtilTest {
+    private LinkProperties mLinkProperties;
+
+    private static final String TEST_LINKPROPS_IFACE = "TEST_IFACE";
+    private static final String TEST_STACKED_LINK_1_IFACE = "TEST_STACKED_IFACE_1";
+    private static final String TEST_STACKED_LINK_2_IFACE = "TEST_STACKED_IFACE_2";
+
+    @Before
+    public void setUp() {
+        mLinkProperties = makeLinkProperties(TEST_LINKPROPS_IFACE);
+        mLinkProperties.addStackedLink(makeLinkProperties(TEST_STACKED_LINK_1_IFACE));
+        mLinkProperties.addStackedLink(makeLinkProperties(TEST_STACKED_LINK_2_IFACE));
+    }
+
+    private static LinkProperties makeLinkProperties(String iface) {
+        final LinkProperties lp = new LinkProperties();
+        lp.setInterfaceName(iface);
+        lp.setLinkAddresses(Arrays.asList(
+                new LinkAddress(InetAddresses.parseNumericAddress("192.168.0.42"), 16),
+                new LinkAddress(InetAddresses.parseNumericAddress("2001:db8::7"), 42)));
+        lp.setDnsServers(Arrays.asList(
+                InetAddresses.parseNumericAddress("2001:db8::42"),
+                InetAddresses.parseNumericAddress("192.168.1.1")
+        ));
+        lp.setValidatedPrivateDnsServers(Arrays.asList(
+                InetAddresses.parseNumericAddress("2001:db8::43"),
+                InetAddresses.parseNumericAddress("192.168.42.43")
+        ));
+        lp.setPcscfServers(Arrays.asList(
+                InetAddresses.parseNumericAddress("2001:db8::47"),
+                InetAddresses.parseNumericAddress("192.168.42.47")
+        ));
+        lp.setUsePrivateDns(true);
+        lp.setPrivateDnsServerName("test.example.com");
+        lp.setDomains("test1.example.com,test2.example.com");
+        lp.addRoute(new RouteInfo(
+                new IpPrefix(InetAddresses.parseNumericAddress("2001:db8::44"), 45),
+                InetAddresses.parseNumericAddress("2001:db8::45"),
+                iface,
+                RouteInfo.RTN_UNICAST
+        ));
+        lp.addRoute(new RouteInfo(
+                new IpPrefix(InetAddresses.parseNumericAddress("192.168.44.45"), 16),
+                InetAddresses.parseNumericAddress("192.168.45.1"),
+                iface,
+                RouteInfo.RTN_THROW
+        ));
+        lp.setHttpProxy(new ProxyInfo("test3.example.com", 8000,
+                "excl1.example.com,excl2.example.com"));
+        lp.setMtu(5000);
+        lp.setTcpBufferSizes("1,2,3,4,5,6");
+        lp.setNat64Prefix(new IpPrefix(InetAddresses.parseNumericAddress("2001:db8::48"), 96));
+
+        // Verify that this test does not miss any new field added later.
+        // If any added field is not included in LinkProperties#equals, assertLinkPropertiesEquals
+        // must also be updated.
+        assertEquals(14, Arrays.stream(LinkProperties.class.getDeclaredFields())
+                .filter(f -> !Modifier.isStatic(f.getModifiers())).count());
+
+        return lp;
+    }
+
+    @Test
+    public void testParcelUnparcel() {
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullInterface() {
+        mLinkProperties.setInterfaceName(null);
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullPrivateDnsServer() {
+        mLinkProperties.setPrivateDnsServerName(null);
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullDomains() {
+        mLinkProperties.setDomains(null);
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullProxy() {
+        mLinkProperties.setHttpProxy(null);
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullTcpBufferSizes() {
+        mLinkProperties.setTcpBufferSizes(null);
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_EmptyLinkAddresses() {
+        mLinkProperties.setLinkAddresses(Collections.emptyList());
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_EmptyDnses() {
+        mLinkProperties.setDnsServers(Collections.emptyList());
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_EmptyValidatedPrivateDnses() {
+        mLinkProperties.setValidatedPrivateDnsServers(Collections.emptyList());
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_EmptyRoutes() {
+        for (RouteInfo r : mLinkProperties.getAllRoutes()) {
+            mLinkProperties.removeRoute(r);
+        }
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_PacFileProxyInfo() {
+        mLinkProperties.setHttpProxy(new ProxyInfo(Uri.parse("http://pacfile.example.com")));
+        doParcelUnparcelTest();
+    }
+
+    @Test
+    public void testParcelUnparcel_NullNat64Prefix() {
+        mLinkProperties.setNat64Prefix(null);
+        doParcelUnparcelTest();
+    }
+
+    private void doParcelUnparcelTest() {
+        final LinkProperties unparceled = fromStableParcelable(toStableParcelable(mLinkProperties));
+        assertLinkPropertiesEquals(mLinkProperties, unparceled);
+    }
+
+    private static void assertLinkPropertiesEquals(LinkProperties expected, LinkProperties actual) {
+        assertEquals(expected, actual);
+
+        // LinkProperties equals() does not include stacked links
+        assertEquals(expected.getStackedLinks(), actual.getStackedLinks());
+    }
+}