/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
  1 = 1
  2 = 2
  3 = 3
4 = 4 = 4
5 = 5 = 5
6 but 4 = 4
7 = 7 = 7
Invisiblity test 1.: passed
Invisiblity test 2.: passed
Invisiblity test 3.: passed
--
  1 = 1
  2 = 2
  3 = 3
  4 = 4 = 4 = 4
  5
  6 == 6
  7 == 7 == 7
--