Implement kubevirt router store, manager and codec with unit tests

Change-Id: Ib93a71326aa35b4817f0e6b6c97d5f57b26fe470
diff --git a/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtRouterCodecTest.java b/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtRouterCodecTest.java
new file mode 100644
index 0000000..f2b2470
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+++ b/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtRouterCodecTest.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright 2021-present Open Networking Foundation
+ *
+ * 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.kubevirtnetworking.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.ImmutableMap;
+import com.google.common.collect.ImmutableSet;
+import org.hamcrest.MatcherAssert;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.packet.IpAddress;
+import org.onlab.packet.MacAddress;
+import org.onosproject.codec.JsonCodec;
+import org.onosproject.codec.impl.MockCodecContext;
+import org.onosproject.core.CoreService;
+import org.onosproject.kubevirtnetworking.api.DefaultKubevirtRouter;
+import org.onosproject.kubevirtnetworking.api.KubevirtPeerRouter;
+import org.onosproject.kubevirtnetworking.api.KubevirtRouter;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import static junit.framework.TestCase.assertEquals;
+import static junit.framework.TestCase.assertTrue;
+import static org.easymock.EasyMock.createMock;
+import static org.easymock.EasyMock.expect;
+import static org.easymock.EasyMock.replay;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onosproject.kubevirtnetworking.codec.KubevirtRouterJsonMatcher.matchesKubevirtRouter;
+import static org.onosproject.net.NetTestTools.APP_ID;
+
+/**
+ * Unit tests for KubevirtRouter codec.
+ */
+public final class KubevirtRouterCodecTest {
+
+    MockCodecContext context;
+
+    JsonCodec<KubevirtRouter> kubevirtRouterCodec;
+
+    final CoreService mockCoreService = createMock(CoreService.class);
+    private static final String REST_APP_ID = "org.onosproject.rest";
+
+    @Before
+    public void setUp() {
+        context = new MockCodecContext();
+        kubevirtRouterCodec = new KubevirtRouterCodec();
+
+        assertThat(kubevirtRouterCodec, notNullValue());
+        expect(mockCoreService.registerApplication(REST_APP_ID))
+                .andReturn(APP_ID).anyTimes();
+        replay(mockCoreService);
+        context.registerService(CoreService.class, mockCoreService);
+    }
+
+    /**
+     * Tests the kubevirt router encoding.
+     */
+    @Test
+    public void testKubevirtRouterEncode() {
+        KubevirtPeerRouter peerRouter = new KubevirtPeerRouter(IpAddress.valueOf("10.10.10.10"),
+                MacAddress.valueOf("11:22:33:44:55:66"));
+
+        KubevirtRouter router = DefaultKubevirtRouter.builder()
+                .name("router-1")
+                .enableSnat(true)
+                .description("router-1")
+                .internal(ImmutableSet.of("vlan-1"))
+                .external(ImmutableMap.of("10.10.10.20", "flat-1"))
+                .peerRouter(peerRouter)
+                .build();
+
+        ObjectNode routerJson = kubevirtRouterCodec.encode(router, context);
+        assertThat(routerJson, matchesKubevirtRouter(router));
+    }
+
+    @Test
+    public void testKubevirtRouterDecode() throws IOException {
+        KubevirtRouter router = getKubevirtRouter("KubevirtRouter.json");
+
+        assertEquals("router-1", router.name());
+        assertEquals("Example Virtual Router", router.description());
+        assertTrue(router.enableSnat());
+        assertEquals("external-network", router.external().get("192.168.10.5"));
+        assertTrue(router.internal().contains("vxlan-network-1"));
+        assertTrue(router.internal().contains("vxlan-network-2"));
+        assertEquals("192.168.10.1", router.peerRouter().ipAddress().toString());
+    }
+
+    private KubevirtRouter getKubevirtRouter(String resourceName) throws IOException {
+        InputStream jsonStream = KubevirtRouterCodecTest.class.getResourceAsStream(resourceName);
+        JsonNode json = context.mapper().readTree(jsonStream);
+        MatcherAssert.assertThat(json, notNullValue());
+        KubevirtRouter router = kubevirtRouterCodec.decode((ObjectNode) json, context);
+        assertThat(router, notNullValue());
+        return router;
+    }
+}