Pre-Invocation flag PUT_FOR_EXTERNAL_READ throws exception

public void testExceptionSuppression() throws Exception {
      Cache cache1 = cache(0, "replSync");
      Cache cache2 = cache(1, "replSync");
      Transport mockTransport = mock(Transport.class);
      RpcManagerImpl rpcManager = (RpcManagerImpl) TestingUtil.extractComponent(cache1, RpcManager.class);
      Transport originalTransport = TestingUtil.extractComponent(cache1, Transport.class);
      try {

         Address mockAddress1 = mock(Address.class);
         Address mockAddress2 = mock(Address.class);

         List<Address> memberList = new ArrayList<Address>(2);
         memberList.add(mockAddress1);
         memberList.add(mockAddress2);

         rpcManager.setTransport(mockTransport);

         when(mockTransport.getMembers()).thenReturn(memberList);

         when(mockTransport.getViewId()).thenReturn(originalTransport.getViewId());

         when(mockTransport.invokeRemotely(anyAddresses(), (CacheRpcCommand) anyObject(), anyResponseMode(),
                                             anyLong(), anyBoolean(), (ResponseFilter) anyObject()))
               .thenThrow(new RuntimeException("Barf!"));

         try {
            cache1.put(key, value);
            fail("Should have barfed");
         }
         catch (RuntimeException re) {
         }

         // clean up any indeterminate state left over
         try {
            cache1.remove(key);
            fail("Should have barfed");
         }
         catch (RuntimeException re) {
         }

         assertNull("Should have cleaned up", cache1.get(key));

         // should not barf
         cache1.putForExternalRead(key, value);

         /** ------------------- Testing the same feature with Flag.PUT_FOR_EXTERNAL_READ **/
         try {
            cache1.remove(key);
            fail("Should have barfed");
         }
         catch (RuntimeException re) {
         }

         cache1.getAdvancedCache().withFlags(Flag.PUT_FOR_EXTERNAL_READ).put(key, value);
      }
      finally {
         if (rpcManager != null) rpcManager.setTransport(originalTransport);
      }
   }