FIX: to support delete operation for list node under a module

Change-Id: Id71503a2206be648e91d84265f92c0a18ac90e67
diff --git a/apps/yms/ut/src/test/java/org/onosproject/yms/app/ydt/FoodArenaTest.java b/apps/yms/ut/src/test/java/org/onosproject/yms/app/ydt/FoodArenaTest.java
index 7f058a9..9754192 100644
--- a/apps/yms/ut/src/test/java/org/onosproject/yms/app/ydt/FoodArenaTest.java
+++ b/apps/yms/ut/src/test/java/org/onosproject/yms/app/ydt/FoodArenaTest.java
@@ -22,11 +22,16 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import static org.junit.Assert.assertEquals;
+import static org.onosproject.yms.app.ydt.YdtAppNodeOperationType.DELETE_ONLY;
 import static org.onosproject.yms.app.ydt.YdtTestUtils.foodArenaYdt;
+import static org.onosproject.yms.app.ydt.YdtTestUtils.getYdtBuilder;
 import static org.onosproject.yms.app.ydt.YdtTestUtils.validateLeafContents;
 import static org.onosproject.yms.app.ydt.YdtTestUtils.validateNodeContents;
 import static org.onosproject.yms.app.ydt.YdtTestUtils.walkINTree;
+import static org.onosproject.yms.ydt.YdtContextOperationType.DELETE;
 import static org.onosproject.yms.ydt.YdtContextOperationType.MERGE;
+import static org.onosproject.yms.ydt.YdtContextOperationType.NONE;
 
 public class FoodArenaTest {
 
@@ -56,6 +61,19 @@
     }
 
     /**
+     * Creates and validates food arena ydt.
+     */
+    @Test
+    public void foodArenaDeleteOperationTest() throws IOException {
+
+        YangRequestWorkBench ydtBuilder;
+        ydtBuilder = getYdtBuilder("foodarena", "food", "ydt.food", NONE);
+        ydtBuilder.addChild("food", "ydt.food", DELETE);
+        YdtAppContext appRootNode = ydtBuilder.getAppRootNode();
+        assertEquals(appRootNode.getFirstChild().getOperationType(), DELETE_ONLY);
+    }
+
+    /**
      * Validates the given built ydt.
      */
     private void validateTree(YangRequestWorkBench ydtBuilder) {