[ONOS-5945] Add LispMapReferral message type with unit tests

Change-Id: I4f93140fccdbe96c4f0911e8aa325e6e3ffaee2f
diff --git a/protocols/lisp/msg/src/test/java/org/onosproject/lisp/msg/protocols/DefaultLispMapReferralTest.java b/protocols/lisp/msg/src/test/java/org/onosproject/lisp/msg/protocols/DefaultLispMapReferralTest.java
new file mode 100644
index 0000000..d2c669e
--- /dev/null
+++ b/protocols/lisp/msg/src/test/java/org/onosproject/lisp/msg/protocols/DefaultLispMapReferralTest.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2017-present 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.onosproject.lisp.msg.protocols;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.testing.EqualsTester;
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.DeserializationException;
+import org.onlab.packet.IpAddress;
+import org.onosproject.lisp.msg.exceptions.LispParseError;
+import org.onosproject.lisp.msg.exceptions.LispReaderException;
+import org.onosproject.lisp.msg.exceptions.LispWriterException;
+import org.onosproject.lisp.msg.protocols.DefaultLispMapReferral.DefaultMapReferralBuilder;
+import org.onosproject.lisp.msg.protocols.DefaultLispMapReferral.MapReferralReader;
+import org.onosproject.lisp.msg.protocols.DefaultLispMapReferral.MapReferralWriter;
+import org.onosproject.lisp.msg.protocols.DefaultLispReferralRecord.DefaultReferralRecordBuilder;
+import org.onosproject.lisp.msg.protocols.LispMapReferral.MapReferralBuilder;
+import org.onosproject.lisp.msg.protocols.LispReferralRecord.ReferralRecordBuilder;
+import org.onosproject.lisp.msg.types.LispIpv4Address;
+
+import java.util.List;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * Unit tests for DefaultLispMapReferral class.
+ */
+public final class DefaultLispMapReferralTest {
+
+    private static final String IP_ADDRESS = "192.168.1.1";
+
+    private LispMapReferral referral1;
+    private LispMapReferral sameAsReferral1;
+    private LispMapReferral referral2;
+
+    @Before
+    public void setup() {
+
+        MapReferralBuilder builder1 = new DefaultMapReferralBuilder();
+
+        List<LispReferralRecord> records1 =
+                ImmutableList.of(getReferralRecord(), getReferralRecord());
+
+        referral1 = builder1
+                .withNonce(1L)
+                .withReferralRecords(records1)
+                .build();
+
+        MapReferralBuilder builder2 = new DefaultMapReferralBuilder();
+
+        List<LispReferralRecord> records2 =
+                ImmutableList.of(getReferralRecord(), getReferralRecord());
+
+        sameAsReferral1 = builder2
+                .withNonce(1L)
+                .withReferralRecords(records1)
+                .build();
+
+        MapReferralBuilder builder3 = new DefaultMapReferralBuilder();
+
+        referral2 = builder3
+                .withNonce(2L)
+                .build();
+    }
+
+    private LispReferralRecord getReferralRecord() {
+        ReferralRecordBuilder builder = new DefaultReferralRecordBuilder();
+
+        LispIpv4Address ipv4Locator = new LispIpv4Address(IpAddress.valueOf(IP_ADDRESS));
+
+        return builder
+                .withRecordTtl(100)
+                .withIsAuthoritative(true)
+                .withIsIncomplete(false)
+                .withMapVersionNumber((short) 1)
+                .withMaskLength((byte) 0x01)
+                .withAction(LispMapReplyAction.NativelyForward)
+                .withEidPrefixAfi(ipv4Locator)
+                .build();
+    }
+
+    @Test
+    public void testEquality() {
+        new EqualsTester()
+                .addEqualityGroup(referral1, sameAsReferral1)
+                .addEqualityGroup(referral2).testEquals();
+    }
+
+    @Test
+    public void testConstruction() {
+        LispMapReferral referral = referral1;
+
+        assertThat(referral.getNonce(), is(1L));
+        assertThat(referral.getRecordCount(), is(2));
+    }
+
+    @Test
+    public void testSerialization() throws LispReaderException, LispWriterException,
+            LispParseError, DeserializationException {
+        ByteBuf byteBuf = Unpooled.buffer();
+
+        MapReferralWriter writer = new MapReferralWriter();
+        writer.writeTo(byteBuf, referral1);
+
+        MapReferralReader reader = new MapReferralReader();
+        LispMapReferral deserialized = reader.readFrom(byteBuf);
+
+        new EqualsTester().addEqualityGroup(referral1, deserialized).testEquals();
+    }
+}