[ONOS-7905] Add default implementation for kubernetes data model

Change-Id: I08e9266dec2050e8299e4189745608a6e03fd06e
diff --git a/apps/k8s-networking/app/src/test/java/org/onosproject/k8snetworking/codec/K8sPortJsonMatcher.java b/apps/k8s-networking/app/src/test/java/org/onosproject/k8snetworking/codec/K8sPortJsonMatcher.java
new file mode 100644
index 0000000..b0f327e
--- /dev/null
+++ b/apps/k8s-networking/app/src/test/java/org/onosproject/k8snetworking/codec/K8sPortJsonMatcher.java
@@ -0,0 +1,118 @@
+/*
+ * Copyright 2019-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.k8snetworking.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.k8snetworking.api.K8sPort;
+
+/**
+ * Hamcrest matcher for kubernetes port.
+ */
+public final class K8sPortJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final K8sPort port;
+
+    private static final String NETWORK_ID = "networkId";
+    private static final String PORT_ID = "portId";
+    private static final String MAC_ADDRESS = "macAddress";
+    private static final String IP_ADDRESS = "ipAddress";
+    private static final String DEVICE_ID = "deviceId";
+    private static final String PORT_NUMBER = "portNumber";
+    private static final String STATE = "state";
+
+    private K8sPortJsonMatcher(K8sPort port) {
+        this.port = port;
+    }
+
+    @Override
+    protected boolean matchesSafely(JsonNode jsonNode, Description description) {
+
+        // check network ID
+        String jsonNetworkId = jsonNode.get(NETWORK_ID).asText();
+        String networkId = port.networkId();
+        if (!jsonNetworkId.equals(networkId)) {
+            description.appendText("network ID was " + jsonNetworkId);
+            return false;
+        }
+
+        // check port ID
+        String jsonPortId = jsonNode.get(PORT_ID).asText();
+        String portId = port.portId();
+        if (!jsonPortId.equals(portId)) {
+            description.appendText("port ID was " + jsonPortId);
+            return false;
+        }
+
+        // check MAC address
+        String jsonMacAddress = jsonNode.get(MAC_ADDRESS).asText();
+        String macAddress = port.macAddress().toString();
+        if (!jsonMacAddress.equals(macAddress)) {
+            description.appendText("MAC address was " + jsonMacAddress);
+            return false;
+        }
+
+        // check IP address
+        String jsonIpAddress = jsonNode.get(IP_ADDRESS).asText();
+        String ipAddress = port.ipAddress().toString();
+        if (!jsonIpAddress.equals(ipAddress)) {
+            description.appendText("IP address was " + jsonIpAddress);
+            return false;
+        }
+
+        // check device ID
+        String jsonDeviceId = jsonNode.get(DEVICE_ID).asText();
+        String deviceId = port.deviceId().toString();
+        if (!jsonDeviceId.equals(deviceId)) {
+            description.appendText("device ID was " + jsonDeviceId);
+            return false;
+        }
+
+        // check port number
+        String jsonPortNumber = jsonNode.get(PORT_NUMBER).asText();
+        String portNumber = port.portNumber().toString();
+        if (!jsonPortNumber.equals(portNumber)) {
+            description.appendText("port number was " + jsonPortNumber);
+            return false;
+        }
+
+        // check state
+        String jsonState = jsonNode.get(STATE).asText();
+        String state = port.state().name();
+        if (!jsonState.equals(state)) {
+            description.appendText("state was " + jsonState);
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(port.toString());
+    }
+
+    /**
+     * Factory to allocate an kubernetes port matcher.
+     *
+     * @param port kubernetes port object we are looking for
+     * @return matcher
+     */
+    public static K8sPortJsonMatcher matchesK8sPort(K8sPort port) {
+        return new K8sPortJsonMatcher(port);
+    }
+}