diff --git a/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionCodecTest.java b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionCodecTest.java
new file mode 100644
index 0000000..86d259d
--- /dev/null
+++ b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionCodecTest.java
@@ -0,0 +1,141 @@
+/*
+ * 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.mapping.web.codec;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.CodecService;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.codec.impl.CodecManager;
+import org.onosproject.mapping.actions.MappingAction;
+import org.onosproject.mapping.actions.MappingActions;
+import org.onosproject.mapping.actions.NoMappingAction;
+import org.onosproject.mapping.actions.DropMappingAction;
+import org.onosproject.mapping.actions.ForwardMappingAction;
+import org.onosproject.mapping.actions.NativeForwardMappingAction;
+import org.onosproject.mapping.web.MappingCodecRegistrator;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onosproject.mapping.web.codec.MappingActionJsonMatcher.matchesAction;
+
+/**
+ * Unit tests for MappingActionCodec.
+ */
+public class MappingActionCodecTest {
+
+    private CodecContext context;
+    private JsonCodec<MappingAction> actionCodec;
+    private MappingCodecRegistrator registrator;
+
+    /**
+     * Sets up for each test.
+     * Creates a context and fetches the mapping action codec.
+     */
+    @Before
+    public void setUp() {
+        CodecManager manager = new CodecManager();
+        registrator = new MappingCodecRegistrator();
+        registrator.codecService = manager;
+        registrator.activate();
+
+        context = new MappingActionCodecTest.MappingTestContext(registrator.codecService);
+        actionCodec = context.codec(MappingAction.class);
+        assertThat(actionCodec, notNullValue());
+    }
+
+    /**
+     * Deactivates the codec registrator.
+     */
+    @After
+    public void tearDown() {
+        registrator.deactivate();
+    }
+
+    /**
+     * Tests the encoding of no mapping action.
+     */
+    @Test
+    public void noActionTest() {
+        final NoMappingAction action = MappingActions.noAction();
+        final ObjectNode actionJson = actionCodec.encode(action, context);
+        assertThat(actionJson, matchesAction(action));
+    }
+
+    /**
+     * Tests the encoding of drop mapping action.
+     */
+    @Test
+    public void dropActionTest() {
+        final DropMappingAction action = MappingActions.drop();
+        final ObjectNode actionJson = actionCodec.encode(action, context);
+        assertThat(actionJson, matchesAction(action));
+    }
+
+    /**
+     * Tests the encoding of forward mapping action.
+     */
+    @Test
+    public void forwardActionTest() {
+        final ForwardMappingAction action = MappingActions.forward();
+        final ObjectNode actionJson = actionCodec.encode(action, context);
+        assertThat(actionJson, matchesAction(action));
+    }
+
+    /**
+     * Tests the encoding of native forwarding mapping action.
+     */
+    @Test
+    public void nativeForwardActionTest() {
+        final NativeForwardMappingAction action = MappingActions.nativeForward();
+        final ObjectNode actionJson = actionCodec.encode(action, context);
+        assertThat(actionJson, matchesAction(action));
+    }
+
+    /**
+     * Test mapping codec context.
+     */
+    private class MappingTestContext implements CodecContext {
+        private final ObjectMapper mapper = new ObjectMapper();
+        private final CodecService manager;
+
+        /**
+         * Constructs a new mock codec context.
+         */
+        public MappingTestContext(CodecService manager) {
+            this.manager = manager;
+        }
+
+        @Override
+        public ObjectMapper mapper() {
+            return mapper;
+        }
+
+        @Override
+        public <T> JsonCodec<T> codec(Class<T> entityClass) {
+            return manager.getCodec(entityClass);
+        }
+
+        @Override
+        public <T> T getService(Class<T> serviceClass) {
+            return null;
+        }
+    }
+}
diff --git a/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionJsonMatcher.java b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionJsonMatcher.java
new file mode 100644
index 0000000..94ba91e
--- /dev/null
+++ b/apps/mappingmanagement/web/src/test/java/org/onosproject/mapping/web/codec/MappingActionJsonMatcher.java
@@ -0,0 +1,150 @@
+/*
+ * 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.mapping.web.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.mapping.actions.MappingAction;
+import org.onosproject.mapping.actions.NoMappingAction;
+import org.onosproject.mapping.actions.DropMappingAction;
+import org.onosproject.mapping.actions.ForwardMappingAction;
+import org.onosproject.mapping.actions.NativeForwardMappingAction;
+/**
+ * Hamcrest matcher for mapping actions.
+ */
+public final class MappingActionJsonMatcher
+        extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final MappingAction action;
+
+    /**
+     * A default constructor.
+     *
+     * @param action mapping action
+     */
+    private MappingActionJsonMatcher(MappingAction action) {
+        this.action = action;
+    }
+
+    /**
+     * Matches the contents of a no mapping action.
+     *
+     * @param node        JSON action to match
+     * @param description object used for recording errors
+     * @return true if contents match, false otherwise
+     */
+    private boolean matchNoAction(JsonNode node, Description description) {
+        NoMappingAction actionToMatch = (NoMappingAction) action;
+        final String jsonType = node.get(MappingActionCodec.TYPE).textValue();
+        if (!actionToMatch.type().name().equals(jsonType)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Matches the contents of a drop mapping action.
+     *
+     * @param node        JSON action to match
+     * @param description object used for recording errors
+     * @return true if the contents match, false otherwise
+     */
+    private boolean matchDropAction(JsonNode node, Description description) {
+        DropMappingAction actionToMatch = (DropMappingAction) action;
+        final String jsonType = node.get(MappingActionCodec.TYPE).textValue();
+        if (!actionToMatch.type().name().equals(jsonType)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Matches the contents of a forward mapping action.
+     *
+     * @param node        JSON action to match
+     * @param description object used for recording errors
+     * @return true if the contents match, false otherwise
+     */
+    private boolean matchForwardAction(JsonNode node, Description description) {
+        ForwardMappingAction actionToMatch = (ForwardMappingAction) action;
+        final String jsonType = node.get(MappingActionCodec.TYPE).textValue();
+        if (!actionToMatch.type().name().equals(jsonType)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Matches the contents of a native forward mapping action.
+     *
+     * @param node        JSON action to match
+     * @param description object used for recording errors
+     * @return true if the contents match, false otherwise
+     */
+    private boolean matchNativeForwardAction(JsonNode node, Description description) {
+        NativeForwardMappingAction actionToMatch = (NativeForwardMappingAction) action;
+        final String jsonType = node.get(MappingActionCodec.TYPE).textValue();
+        if (!actionToMatch.type().name().equals(jsonType)) {
+            description.appendText("type was " + jsonType);
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    protected boolean matchesSafely(JsonNode jsonNode, Description description) {
+
+        // check type
+        final JsonNode jsonTypeNode = jsonNode.get(MappingActionCodec.TYPE);
+        final String jsonType = jsonTypeNode.textValue();
+        final String type = action.type().name();
+        if (!jsonType.equals(type)) {
+            description.appendText("type was " + type);
+            return false;
+        }
+
+        if (action instanceof NoMappingAction) {
+            return matchNoAction(jsonNode, description);
+        } else if (action instanceof DropMappingAction) {
+            return matchDropAction(jsonNode, description);
+        } else if (action instanceof ForwardMappingAction) {
+            return matchForwardAction(jsonNode, description);
+        } else if (action instanceof NativeForwardMappingAction) {
+            return matchNativeForwardAction(jsonNode, description);
+        }
+
+        return false;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(action.toString());
+    }
+
+    /**
+     * Factory to allocate a mapping action matcher.
+     *
+     * @param action action object we are looking for
+     * @return matcher
+     */
+    public static MappingActionJsonMatcher matchesAction(MappingAction action) {
+        return new MappingActionJsonMatcher(action);
+    }
+}