[ONOS-3161]Unit test for port pair codec

Change-Id: Id4fefe31c182cc076f616da1fceb9662522433e3

+/*
+ * Copyright 2015 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.vtnweb.web;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.vtnrsc.PortPair;
+import org.onosproject.vtnrsc.PortPairId;
+import org.onosproject.vtnrsc.TenantId;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * Port pair codec unit tests.
+ */
+public class PortPairCodecTest {
+
+    SfcCodecContext context;
+    JsonCodec<PortPair> portPairCodec;
+    /**
+     * Sets up for each test.  Creates a context and fetches the port pair
+     * codec.
+     */
+    @Before
+    public void setUp() {
+        context = new SfcCodecContext();
+        portPairCodec = context.codec(PortPair.class);
+        assertThat(portPairCodec, notNullValue());
+    }
+
+    /**
+     * Reads in a port pair from the given resource and decodes it.
+     *
+     * @param resourceName resource to use to read the JSON for the port pair
+     * @return decoded port pair
+     * @throws IOException if processing the resource fails
+     */
+    private PortPair getPortPair(String resourceName) throws IOException {
+        InputStream jsonStream = PortPairCodecTest.class
+                .getResourceAsStream(resourceName);
+        ObjectMapper mapper = new ObjectMapper();
+        JsonNode json = mapper.readTree(jsonStream);
+        assertThat(json, notNullValue());
+        PortPair portPair = portPairCodec.decode((ObjectNode) json, context);
+        assertThat(portPair, notNullValue());
+        return portPair;
+    }
+
+    /**
+     * Checks that a simple port pair decodes properly.
+     *
+     * @throws IOException if the resource cannot be processed
+     */
+    @Test
+    public void codecPortPairTest() throws IOException {
+
+        PortPair portPair = getPortPair("portPair.json");
+
+        assertThat(portPair, notNullValue());
+
+        PortPairId portPairId = PortPairId.of("78dcd363-fc23-aeb6-f44b-56dc5e2fb3ae");
+        TenantId tenantId = TenantId.tenantId("d382007aa9904763a801f68ecf065cf5");
+
+        assertThat(portPair.portPairId().toString(), is(portPairId.toString()));
+        assertThat(portPair.name(), is("PP1"));
+        assertThat(portPair.tenantId().toString(), is(tenantId.toString()));
+        assertThat(portPair.description(), is("SF-A"));
+        assertThat(portPair.ingress().toString(), is("dace4513-24fc-4fae-af4b-321c5e2eb3d1"));
+        assertThat(portPair.egress().toString(), is("aef3478a-4a56-2a6e-cd3a-9dee4e2ec345"));
+    }
+}

+/*
+ * Copyright 2015 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.vtnweb.web;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.onosproject.codec.CodecContext;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.vtnrsc.FlowClassifier;
+import org.onosproject.vtnrsc.PortChain;
+import org.onosproject.vtnrsc.PortPair;
+import org.onosproject.vtnrsc.PortPairGroup;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+/**
+ * Mock codec context for use in codec unit tests.
+ */
+public class SfcCodecContext implements CodecContext {
+
+    private final ObjectMapper mapper = new ObjectMapper();
+    private final Map<Class<?>, JsonCodec> codecs = new ConcurrentHashMap<>();
+
+    /**
+     * Constructs a new mock codec context.
+     */
+    public SfcCodecContext() {
+        codecs.clear();
+        registerCodec(PortPair.class, new PortPairCodec());
+        registerCodec(PortChain.class, new PortChainCodec());
+        registerCodec(PortPairGroup.class, new PortPairGroupCodec());
+        registerCodec(FlowClassifier.class, new FlowClassifierCodec());
+    }
+
+    @Override
+    public ObjectMapper mapper() {
+        return mapper;
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public <T> T getService(Class<T> serviceClass) {
+        // TODO
+        return null;
+    }
+
+    /**
+     * Registers the specified JSON codec for the given entity class.
+     *
+     * @param entityClass entity class
+     * @param codec       JSON codec
+     * @param <T>         entity type
+     */
+    public <T> void registerCodec(Class<T> entityClass, JsonCodec<T> codec) {
+        codecs.putIfAbsent(entityClass, codec);
+    }
+
+    @SuppressWarnings("unchecked")
+    @Override
+    public <T> JsonCodec<T> codec(Class<T> entityClass) {
+        return codecs.get(entityClass);
+    }
+}

+{
+   "id": "78dcd363-fc23-aeb6-f44b-56dc5e2fb3ae",
+   "name": "PP1",
+   "tenant_id": "d382007aa9904763a801f68ecf065cf5",
+   "description": "SF-A",
+   "ingress": "dace4513-24fc-4fae-af4b-321c5e2eb3d1",
+   "egress": "aef3478a-4a56-2a6e-cd3a-9dee4e2ec345"
+}
+