[ONOS-4563][ONOS-4564][ONOS-4551][ONOS-4538]defect fix

Change-Id: Ia3fe844e1e846d2e1d2c4359eefc815e7767aef9
diff --git a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MaxElementsListenerTest.java b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MaxElementsListenerTest.java
index c531b85..aa0cee2 100644
--- a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MaxElementsListenerTest.java
+++ b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/MaxElementsListenerTest.java
@@ -176,4 +176,15 @@
         assertThat(leafListInfo.getName(), is("invalid-interval"));
         assertThat(leafListInfo.getMaxElelements(), is(2147483647));
     }
+
+    /**
+     * Checks whether exception is thrown when invalid min-elements value is
+     * given as input.
+     */
+    @Test
+    public void processMaxElementsMaxValue() throws IOException, ParserException {
+        thrown.expect(ParserException.class);
+        thrown.expectMessage("YANG file error : max-elements value 77777777777777777777777 is not valid.");
+        YangNode node = manager.getDataModel("src/test/resources/MaxElementsMaxValue.yang");
+    }
 }