[ONOS-5080] YANG object builder coding

Change-Id: Ibef332b58f197a2f6626ee9b6d791b80002e2dfd
diff --git a/apps/yms/app/src/test/java/org/onosproject/yms/app/yob/YobEmptyTest.java b/apps/yms/app/src/test/java/org/onosproject/yms/app/yob/YobEmptyTest.java
new file mode 100644
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--- /dev/null
+++ b/apps/yms/app/src/test/java/org/onosproject/yms/app/yob/YobEmptyTest.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2016-present 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.yms.app.yob;
+
+import org.junit.Test;
+import org.onosproject.yms.app.ydt.YangRequestWorkBench;
+import org.onosproject.yms.app.ydt.YdtExtendedContext;
+import org.onosproject.yms.app.ydt.YdtTestUtils;
+import org.onosproject.yms.ydt.YdtContext;
+
+import java.lang.reflect.Field;
+import java.util.List;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+public class YobEmptyTest {
+
+    /*
+        EMPTY
+        Positive scenario
+        input with in empty.
+    */
+    @Test
+    public void positiveTest() {
+        YangRequestWorkBench defaultYdtBuilder = YdtTestUtils.emptyTypeYdt();
+        validateYangObject(defaultYdtBuilder);
+    }
+
+    private void validateYangObject(YangRequestWorkBench defaultYdtBuilder) {
+
+        YdtContext rootCtx = defaultYdtBuilder.getRootNode();
+
+        YdtContext childCtx = rootCtx.getFirstChild();
+
+        DefaultYobBuilder builder = new DefaultYobBuilder();
+
+        Object yangObject = builder.getYangObject(
+                (YdtExtendedContext) childCtx, YdtTestUtils
+                        .getSchemaRegistry());
+        assertNotNull(yangObject);
+        try {
+
+            Field field = yangObject.getClass().getDeclaredField("emptyList");
+            field.setAccessible(true);
+            List booleanList = (List) field.get(yangObject);
+            Field invalidInterval = booleanList.get(0)
+                    .getClass().getDeclaredField("empty");
+            invalidInterval.setAccessible(true);
+            assertEquals(false, invalidInterval.get(booleanList.get(0)));
+        } catch (NoSuchFieldException | IllegalAccessException e) {
+            fail("No such field or illegal access exception: " + e);
+        }
+    }
+}