    @Test
    public void testUpgradeWithBlankChecksum()
    {


        upgradeSpec.setChecksum( " " );
        Response response = upgrade( upgradeSpec );
        assertNotNull( response );

        assertTrue( response.getStatus() == Status.BAD_REQUEST.getStatusCode() );

        UpgradeStatus status = (UpgradeStatus) response.getEntity();
        assertNotNull( status );

        message = "'checksum' is a mandatory parameter for HMS Upgrade.";
        assertEquals( message, status.getMoreInfo() );
    }