vtype: test VEnum index range check

Author: gcarcassi

epics-vtype/vtype/src/test/java/org/epics/vtype/VEnumTest.java

@@ -44,6 +44,16 @@ public void of4() {
         VEnum value = VEnum.of(0, EnumDisplay.of(3), Alarm.none(), null);
     }
 
+    @Test(expected = IndexOutOfBoundsException.class)
+    public void of5() {
+        VEnum value = VEnum.of(-1, EnumDisplay.of(3), Alarm.none(), Time.now());
+    }
+    
+    @Test(expected = IndexOutOfBoundsException.class)
+    public void of6() {
+        VEnum value = VEnum.of(3, EnumDisplay.of(3), Alarm.none(), Time.now());
+    }
+    
     @Test
     public void equals1() {
         EnumDisplay display = EnumDisplay.of("A", "B", "C");