Add kubevirt node related codec with unit tests

Change-Id: I0c68d4c3d0c7626a4b6b66e5c783631cb9be50a8
diff --git a/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtPhyInterfaceJsonMatcher.java b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtPhyInterfaceJsonMatcher.java
new file mode 100644
index 0000000..cecdc4a
--- /dev/null
+++ b/apps/kubevirt-node/app/src/test/java/org/onosproject/kubevirtnode/codec/KubevirtPhyInterfaceJsonMatcher.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2020-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.kubevirtnode.codec;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.hamcrest.Description;
+import org.hamcrest.TypeSafeDiagnosingMatcher;
+import org.onosproject.kubevirtnode.api.KubevirtPhyInterface;
+
+/**
+ * Hamcrest matcher for kubevirt physical interface.
+ */
+public final class KubevirtPhyInterfaceJsonMatcher extends TypeSafeDiagnosingMatcher<JsonNode> {
+
+    private final KubevirtPhyInterface phyIntf;
+    private static final String NETWORK = "network";
+    private static final String INTERFACE = "intf";
+
+    private KubevirtPhyInterfaceJsonMatcher(KubevirtPhyInterface phyIntf) {
+        this.phyIntf = phyIntf;
+    }
+
+    @Override
+    protected boolean matchesSafely(JsonNode jsonNode, Description description) {
+        // check network name
+        String jsonNetwork = jsonNode.get(NETWORK).asText();
+        String network = phyIntf.network();
+        if (!jsonNetwork.equals(network)) {
+            description.appendText("network name was " + jsonNetwork);
+            return false;
+        }
+
+        // check interface name
+        String jsonIntf = jsonNode.get(INTERFACE).asText();
+        String intf = phyIntf.intf();
+        if (!jsonIntf.equals(intf)) {
+            description.appendText("interface name was " + jsonIntf);
+            return false;
+        }
+
+        return true;
+    }
+
+    @Override
+    public void describeTo(Description description) {
+        description.appendText(phyIntf.toString());
+    }
+
+    /**
+     * Factory to allocate an openstack physical interface matcher.
+     *
+     * @param phyIntf kubevirt physical interface object we are looking for
+     * @return matcher
+     */
+    public static KubevirtPhyInterfaceJsonMatcher
+                    matchesKubevirtPhyInterface(KubevirtPhyInterface phyIntf) {
+        return new KubevirtPhyInterfaceJsonMatcher(phyIntf);
+    }
+}