diff --git a/src/test/java/org/opencord/cordvtn/codec/ServiceNetworkCodecTest.java b/src/test/java/org/opencord/cordvtn/codec/ServiceNetworkCodecTest.java
new file mode 100644
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+++ b/src/test/java/org/opencord/cordvtn/codec/ServiceNetworkCodecTest.java
@@ -0,0 +1,207 @@
+/*
+ * Copyright 2016-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.opencord.cordvtn.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.NullNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableSet;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.onosproject.codec.JsonCodec;
+import org.opencord.cordvtn.api.net.NetworkId;
+import org.opencord.cordvtn.api.net.ProviderNetwork;
+import org.opencord.cordvtn.api.net.ServiceNetwork;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.opencord.cordvtn.api.dependency.Dependency.Type.BIDIRECTIONAL;
+import static org.opencord.cordvtn.api.net.ServiceNetwork.ServiceNetworkType.MANAGEMENT_LOCAL;
+import static org.opencord.cordvtn.api.net.ServiceNetwork.ServiceNetworkType.PRIVATE;
+import static org.opencord.cordvtn.codec.ServiceNetworkJsonMatcher.matchesServiceNetwork;
+
+/**
+ * Unit tests for ServiceNetwork codec.
+ */
+public final class ServiceNetworkCodecTest {
+    private static final String SERVICE_NETWORK = "serviceNetwork";
+    private static final String ID = "id";
+    private static final String TYPE = "type";
+    private static final String PROVIDER_NETWORKS = "providerNetworks";
+
+    private final ProviderNetwork providerA =
+            ProviderNetwork.of(NetworkId.of("A"), BIDIRECTIONAL);
+
+    private final ServiceNetwork networkB = new ServiceNetwork(
+            NetworkId.of("A"),
+            MANAGEMENT_LOCAL,
+            ImmutableSet.of());
+
+    private final ServiceNetwork networkA = new ServiceNetwork(
+            NetworkId.of("B"),
+            PRIVATE,
+            ImmutableSet.of(providerA));
+
+    @Rule
+    public ExpectedException exception = ExpectedException.none();
+
+    private JsonCodec<ServiceNetwork> codec;
+    private MockCodecContext context;
+
+    /**
+     * Sets up for each test.
+     * Creates a context and fetches the ServiceNetwork codec.
+     */
+    @Before
+    public void setUp() {
+        context = new MockCodecContext();
+        codec = context.codec(ServiceNetwork.class);
+        assertThat(codec, notNullValue());
+    }
+
+    @Test
+    public void testServiceNetworkEncode() {
+        ObjectNode networkJson = codec.encode(networkA, context);
+        assertThat(networkJson, notNullValue());
+        assertThat(networkJson, matchesServiceNetwork(networkA));
+
+        networkJson = codec.encode(networkB, context);
+        assertThat(networkJson, notNullValue());
+        assertThat(networkJson, matchesServiceNetwork(networkB));
+    }
+
+    @Test
+    public void testServiceNetworkDecode() throws IOException {
+        ServiceNetwork snet = getServiceNetwork("service-network.json");
+        assertThat(snet.id(), is(NetworkId.of("A")));
+        assertThat(snet.type(), is(MANAGEMENT_LOCAL));
+        assertThat(snet.providers(), is(ImmutableSet.of()));
+
+        snet = getServiceNetwork("service-network-with-provider.json");
+        assertThat(snet.id(), is(NetworkId.of("B")));
+        assertThat(snet.type(), is(PRIVATE));
+        assertThat(snet.providers(), is(ImmutableSet.of(providerA)));
+    }
+
+    @Test
+    public void testServiceNetworkDecodeMissingId() throws IllegalArgumentException {
+        final JsonNode jsonMissingId = context.mapper().createObjectNode()
+                .put(TYPE, PRIVATE.name())
+                .put(PROVIDER_NETWORKS, "");
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonMissingId, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeEmptyId() throws IllegalArgumentException {
+        final JsonNode jsonEmptyId = context.mapper().createObjectNode()
+                .put(ID, "")
+                .put(TYPE, PRIVATE.name())
+                .put(PROVIDER_NETWORKS, "");
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonEmptyId, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeNullId() throws NullPointerException {
+        final JsonNode jsonNullId = context.mapper().createObjectNode()
+                .put(TYPE, PRIVATE.name())
+                .put(PROVIDER_NETWORKS, "")
+                .set(ID, NullNode.getInstance());
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonNullId, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeMissingType() throws IllegalArgumentException {
+        final JsonNode jsonMissingType = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(PROVIDER_NETWORKS, "");
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonMissingType, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeEmptyType() throws IllegalArgumentException {
+        final JsonNode jsonEmptyType = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(TYPE, "")
+                .put(PROVIDER_NETWORKS, "");
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonEmptyType, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeNullType() throws IllegalArgumentException {
+        final JsonNode jsonNullType = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(PROVIDER_NETWORKS, "")
+                .set(TYPE, NullNode.getInstance());
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonNullType, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeWrongType() throws IllegalArgumentException {
+        final JsonNode jsonNoneType = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(TYPE, "none")
+                .put(PROVIDER_NETWORKS, "");
+        exception.expect(IllegalArgumentException.class);
+        codec.decode((ObjectNode) jsonNoneType, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeWithMissingProviderId() throws NullPointerException {
+        final JsonNode jsonMissingProviderId = context.mapper().createObjectNode()
+                .put(TYPE, "B");
+        final JsonNode jsonWithProvider = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(TYPE, PRIVATE.name())
+                .set(PROVIDER_NETWORKS, jsonMissingProviderId);
+        exception.expect(NullPointerException.class);
+        codec.decode((ObjectNode) jsonWithProvider, context);
+    }
+
+    @Test
+    public void testServiceNetworkDecodeWithWrongProviderType() throws NullPointerException {
+        final JsonNode jsonWrongProviderType = context.mapper().createObjectNode()
+                .put(ID, "B")
+                .put(TYPE, "none");
+        final JsonNode jsonWithProvider = context.mapper().createObjectNode()
+                .put(ID, "A")
+                .put(TYPE, PRIVATE.name())
+                .set(PROVIDER_NETWORKS, jsonWrongProviderType);
+        exception.expect(NullPointerException.class);
+        codec.decode((ObjectNode) jsonWithProvider, context);
+    }
+
+    private ServiceNetwork getServiceNetwork(String resource) throws IOException {
+        InputStream jsonStream = ServiceNetworkCodecTest.class.getResourceAsStream(resource);
+        JsonNode jsonNode = context.mapper().readTree(jsonStream).get(SERVICE_NETWORK);
+        assertThat(jsonNode, notNullValue());
+
+        ServiceNetwork snet = codec.decode((ObjectNode) jsonNode, context);
+        assertThat(snet, notNullValue());
+        return snet;
+    }
+}