Implemented unit tests for ServiceNetwork json codec

Change-Id: I150c831d51d2bb7eb08d945e56c99bece5dbfd72
diff --git a/src/test/resources/org/opencord/cordvtn/codec/service-network-with-provider.json b/src/test/resources/org/opencord/cordvtn/codec/service-network-with-provider.json
new file mode 100644
index 0000000..a5dbb88
--- /dev/null
+++ b/src/test/resources/org/opencord/cordvtn/codec/service-network-with-provider.json
@@ -0,0 +1,12 @@
+{
+  "serviceNetwork": {
+    "id": "B",
+    "type": "private",
+    "providerNetworks": [
+      {
+        "id": "A",
+        "bidirectional": true
+      }
+    ]
+  }
+}
\ No newline at end of file
diff --git a/src/test/resources/org/opencord/cordvtn/codec/service-network.json b/src/test/resources/org/opencord/cordvtn/codec/service-network.json
new file mode 100644
index 0000000..857cca6
--- /dev/null
+++ b/src/test/resources/org/opencord/cordvtn/codec/service-network.json
@@ -0,0 +1,7 @@
+{
+  "serviceNetwork": {
+    "id": "A",
+    "type": "management_local",
+    "providerNetworks": []
+  }
+}
\ No newline at end of file