model/utilities/src/test/java/org/onap/policy/apex/model/utilities/CollectionUtilitiesTest.java

   1 /*
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.policy.apex.model.utilities;
  22
  23 import static org.junit.Assert.assertEquals;
  24
  25 import java.util.ArrayList;
  26 import java.util.List;
  27 import org.junit.Test;
  28
  29 public class CollectionUtilitiesTest {
  30
  31     @Test
  32     public void testNullLists() {
  33         int result = 0;
  34
  35         result = CollectionUtils.compareLists(null, null);
  36         assertEquals(0, result);
  37
  38         List<String> leftList = new ArrayList<String>();
  39
  40         result = CollectionUtils.compareLists(leftList, null);
  41         assertEquals(-1, result);
  42
  43         List<String> rightList = new ArrayList<String>();
  44
  45         result = CollectionUtils.compareLists(null, rightList);
  46         assertEquals(1, result);
  47
  48         result = CollectionUtils.compareLists(leftList, rightList);
  49         assertEquals(0, result);
  50
  51         leftList.add("AAA");
  52         result = CollectionUtils.compareLists(leftList, rightList);
  53         assertEquals(-1, result);
  54
  55         rightList.add("AAA");
  56         result = CollectionUtils.compareLists(leftList, rightList);
  57         assertEquals(0, result);
  58
  59         rightList.add("BBB");
  60         result = CollectionUtils.compareLists(leftList, rightList);
  61         assertEquals(1, result);
  62
  63         leftList.add("BBB");
  64         result = CollectionUtils.compareLists(leftList, rightList);
  65         assertEquals(0, result);
  66
  67         leftList.add("CCA");
  68         rightList.add("CCB");
  69         result = CollectionUtils.compareLists(leftList, rightList);
  70         assertEquals(-1, result);
  71
  72         leftList.remove(leftList.size() - 1);
  73         rightList.remove(rightList.size() - 1);
  74         result = CollectionUtils.compareLists(leftList, rightList);
  75         assertEquals(0, result);
  76
  77         leftList.add("CCB");
  78         rightList.add("CCA");
  79         result = CollectionUtils.compareLists(leftList, rightList);
  80         assertEquals(1, result);
  81
  82         leftList.remove(leftList.size() - 1);
  83         rightList.remove(rightList.size() - 1);
  84         result = CollectionUtils.compareLists(leftList, rightList);
  85         assertEquals(0, result);
  86     }
  87 }