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
  28 import org.junit.Test;
  29 import org.onap.policy.apex.model.utilities.CollectionUtils;
  30
  31 public class CollectionUtilitiesTest {
  32
  33     @Test
  34     public void testNullLists() {
  35         int result = 0;
  36
  37         result = CollectionUtils.compareLists(null, null);
  38         assertEquals(0, result);
  39
  40         List<String> leftList = new ArrayList<String>();
  41
  42         result = CollectionUtils.compareLists(leftList, null);
  43         assertEquals(-1, result);
  44
  45         List<String> rightList = new ArrayList<String>();
  46
  47         result = CollectionUtils.compareLists(null, rightList);
  48         assertEquals(1, result);
  49
  50         result = CollectionUtils.compareLists(leftList, rightList);
  51         assertEquals(0, result);
  52
  53         leftList.add("AAA");
  54         result = CollectionUtils.compareLists(leftList, rightList);
  55         assertEquals(-1, result);
  56
  57         rightList.add("AAA");
  58         result = CollectionUtils.compareLists(leftList, rightList);
  59         assertEquals(0, result);
  60
  61         rightList.add("BBB");
  62         result = CollectionUtils.compareLists(leftList, rightList);
  63         assertEquals(1, result);
  64
  65         leftList.add("BBB");
  66         result = CollectionUtils.compareLists(leftList, rightList);
  67         assertEquals(0, result);
  68
  69         leftList.add("CCA");
  70         rightList.add("CCB");
  71         result = CollectionUtils.compareLists(leftList, rightList);
  72         assertEquals(-1, result);
  73
  74         leftList.remove(leftList.size() - 1);
  75         rightList.remove(rightList.size() - 1);
  76         result = CollectionUtils.compareLists(leftList, rightList);
  77         assertEquals(0, result);
  78
  79         leftList.add("CCB");
  80         rightList.add("CCA");
  81         result = CollectionUtils.compareLists(leftList, rightList);
  82         assertEquals(1, result);
  83
  84         leftList.remove(leftList.size() - 1);
  85         rightList.remove(rightList.size() - 1);
  86         result = CollectionUtils.compareLists(leftList, rightList);
  87         assertEquals(0, result);
  88     }
  89 }